DMSC Integration Testing

Test: nexusfiles-scipp|bifrost|can_compute_tof|

2025-12-16 00:16:14: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00010674.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-15 00:16:41: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00010534.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-14 00:16:15: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00010401.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-13 00:16:33: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00010268.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-12 00:16:20: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00010128.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-11 00:16:14: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009988.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-10 00:16:02: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009855.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-09 00:15:53: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009715.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-08 00:16:14: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009568.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-07 00:16:29: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009428.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-06 00:16:31: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009288.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-05 00:15:55: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009148.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-04 00:15:27: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00009001.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-03 00:16:19: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00008854.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-02 00:15:55: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00008714.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-12-01 00:16:18: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00008574.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-30 00:16:07: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00008434.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-29 00:16:22: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00008294.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-28 00:16:07: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00008168.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-27 00:15:54: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00008021.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-26 00:16:09: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00007881.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-25 00:16:08: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00007748.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-24 00:16:11: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00007608.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-23 00:16:00: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00007475.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-22 00:16:25: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00007335.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-21 00:15:54: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00007195.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-20 00:15:53: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00007062.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:309: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:368: ValueError

2025-11-19 00:16:05: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00006929.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-18 00:16:16: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00006782.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-17 00:16:33: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00006649.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-16 00:17:12: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00006509.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-15 00:15:54: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00006362.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-14 00:16:12: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00006222.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-13 00:16:49: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00006082.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-12 00:16:43: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/bifrost_999999_00005935.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-11 00:17:15: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00005791.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-10 00:17:00: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00005659.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-09 00:17:11: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00005519.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-08 00:17:11: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00005379.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-07 00:16:44: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00005246.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-06 00:16:57: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00005106.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-05 00:17:04: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00004959.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(TofDetector[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:44: in _load_experiment_parameter
with open_component_group(
/opt/miniforge/lib/python3.12/contextlib.py:137: in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:284: in open_component_group
yield _unique_child_group(parent, nx_class, group_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-03 00:16:59: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00004679.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(DetectorTofData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:49: in _load_experiment_parameter
parameters = _unique_child_group(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-02 00:16:28: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00004539.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(DetectorTofData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:49: in _load_experiment_parameter
parameters = _unique_child_group(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-11-01 00:16:50: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00004392.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(DetectorTofData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:49: in _load_experiment_parameter
parameters = _unique_child_group(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:343: ValueError

2025-10-31 00:16:02: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00004252.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(DetectorTofData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:49: in _load_experiment_parameter
parameters = _unique_child_group(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:241: ValueError

2025-10-30 00:17:07: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00004105.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(DetectorTofData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:49: in _load_experiment_parameter
parameters = _unique_child_group(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:241: ValueError

2025-10-29 00:16:49: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00003965.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(DetectorTofData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:49: in _load_experiment_parameter
parameters = _unique_child_group(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:241: ValueError

2025-10-28 00:17:11: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/bifrost_999999_00003893.hdf')

def test_can_compute_tof(
workflow: sciline.Pipeline, coda_nexus_file_path: Path
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[TimeOfFlightLookupTableFilename] = tof_lookup_table_simulation()

> result = workflow.compute(DetectorTofData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/bifrost/bifrost_reduction_test.py:30:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/scheduler.py:64: in get
results[t] = reporter.call_provider_with_reporting(graph[t], results)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/reporter.py:398: in call_provider_with_reporting
return provider.call(values)
^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/sciline/_provider.py:144: in call
return self._func(
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:38: in load_instrument_angle
return InstrumentAngle[RunType](_load_experiment_parameter(file_spec, "a4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/bifrost/io/nexus.py:49: in _load_experiment_parameter
parameters = _unique_child_group(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

group =
nx_class = , name = None

def _unique_child_group(
group: snx.Group, nx_class: type[snx.NXobject], name: str | None
) -> snx.Group:
if name is not None:
child = group[name]
if isinstance(child, snx.Field):
raise ValueError(
f"Expected a NeXus group as item '{name}' but got a field."
)
if child.nx_class != nx_class:
raise ValueError(
f"The NeXus group '{name}' was expected to be a "
f'{nx_class} but is a {child.nx_class}.'
)
return child

children = group[nx_class]
if len(children) != 1:
> raise ValueError(
f"Expected exactly one {nx_class.__name__} group '{group.name}', "
f"got {len(children)}"
)
E ValueError: Expected exactly one NXparameters group '/entry', got 0

.tox/nexusfiles-scipp-bifrost/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:241: ValueError