def test_dependee_of_contains_both_components_when_generating_dependee_of_chain_with_mixture_of_absolute_and_relative_paths(
file, # noqa: F811
):
entry_group = file.create_group("entry")
entry_group.attrs["NX_class"] = "NXentry"
instrument_group = entry_group.create_group("instrument")
instrument_group.attrs["NX_class"] = "NXinstrument"
component_a = instrument_group.create_group("a")
component_a.attrs["NX_class"] = "NXaperture"
transforms_group = component_a.create_group("Transforms1")
transform_1 = transforms_group.create_dataset("transform1", data=1.0)
# Relative path to transform
component_a.create_dataset("depends_on", data="Transforms1/transform1")
component_b = instrument_group.create_group("b")
component_b.attrs["NX_class"] = "NXaperture"
# Absolute path to transform
component_b.create_dataset(
"depends_on", data="/entry/instrument/a/Transforms1/transform1")
nexus_wrapper = NexusWrapper("test_dependent_transforms_1")
nexus_wrapper.load_file(entry_group, file)
Instrument(nexus_wrapper, NX_CLASS_DEFINITIONS)
transform_1_loaded = Transformation(nexus_wrapper, transform_1)
# Check both relative and absolute are in dependee_of list
assert component_a.name in transform_1_loaded.dataset.attrs[
"NCdependee_of"]
assert component_b.name in transform_1_loaded.dataset.attrs[
"NCdependee_of"]
def test_GIVEN_stream_group_that_has_ev42_advanced_option_WHEN_filling_in_existing_field_widget_THEN_ev42_group_box_is_shown(
file, qtbot):
group = file.create_group("stream2")
group.attrs["NX_class"] = "NCstream"
vlen_str = h5py.special_dtype(vlen=str)
group.create_dataset("writer_module", dtype=vlen_str, data="ev42")
group.create_dataset("topic", dtype=vlen_str, data="topic1")
group.create_dataset("source", dtype=vlen_str, data="source1")
group.create_dataset(ADC_PULSE_DEBUG, dtype=bool, data=True)
wrapper = NexusWrapper()
wrapper.load_file(file, file)
instrument = Instrument(wrapper, {})
widget = FieldWidget(instrument=instrument)
qtbot.addWidget(widget)
update_existing_stream_field(group, widget)
# this would usually be done outside of the update_existing_stream_field
widget.name = get_name_of_node(group)
assert widget.streams_widget.ev42_advanced_group_box.isEnabled()
generated_group = widget.streams_widget.get_stream_group()
assert generated_group["writer_module"][()] == group["writer_module"][()]
assert generated_group["topic"][()] == group["topic"][()]
assert generated_group["source"][()] == group["source"][()]
assert generated_group[ADC_PULSE_DEBUG][()] == group[ADC_PULSE_DEBUG][()]
def test_GIVEN_entry_group_with_one_instrument_group_WHEN_getting_instrument_group_from_entry_THEN_group_is_returned(
file, ):
entry = file.create_group("entry")
entry.attrs["NX_class"] = "NXentry"
inst_group = entry.create_group("instrument")
inst_group.attrs["NX_class"] = "NXinstrument"
wrapper = NexusWrapper(filename="test_nw")
wrapper.load_file(entry, file)
assert wrapper.instrument == inst_group
assert wrapper.entry == entry
assert wrapper.nexus_file == file
def test_GIVEN_multiple_entry_groups_WHEN_getting_instrument_group_from_entry_THEN_first_group_is_returned_and_others_are_ignored(
file, ):
entry = file.create_group("entry")
entry.attrs["NX_class"] = "NXentry"
inst_group = entry.create_group("instrument")
inst_group.attrs["NX_class"] = "NXinstrument"
inst_group2 = entry.create_group("instrument2")
inst_group2.attrs["NX_class"] = "NXinstrument"
wrapper = NexusWrapper(filename="test_nw2")
wrapper.load_file(entry, file)
assert wrapper.nexus_file == file
assert wrapper.entry == entry
assert wrapper.instrument == inst_group
def test_dependent_is_created_by_instrument_if_depends_on_is_relative(
file, # noqa: F811
):
entry_group = file.create_group("entry")
entry_group.attrs["NX_class"] = "NXentry"
monitor_group = entry_group.create_group("monitor1")
monitor_group.attrs["NX_class"] = "NXmonitor"
monitor_group.create_dataset("depends_on",
data=b"transformations/translation1")
transformations_group = monitor_group.create_group("transformations")
transformations_group.attrs["NX_class"] = "NXtransformations"
transform_1 = transformations_group.create_dataset("translation1", data=1)
nexus_wrapper = NexusWrapper("test_file_with_transforms")
nexus_wrapper.load_file(entry_group, file)
Instrument(nexus_wrapper, NX_CLASS_DEFINITIONS)
transform_1_loaded = Transformation(nexus_wrapper, transform_1)
assert transform_1_loaded.dataset.attrs["NCdependee_of"][
0] == "/entry/monitor1"
def test_dependents_list_is_created_by_instrument(file): # noqa: F811
"""
The dependents list for transforms is stored in the "dependent_of" attribute,
which is not part of the NeXus standard,
we therefore cannot rely on it being present and correct in a file we load.
This test makes sure that instrument generates this information in the wrapped NeXus file it is given.
"""
# Create minimal test file with some transformations but no "dependent_of" attributes
entry_group = file.create_group("entry")
entry_group.attrs["NX_class"] = "NXentry"
instrument_group = entry_group.create_group("instrument")
instrument_group.attrs["NX_class"] = "NXinstrument"
transforms_group = instrument_group.create_group("transformations")
transforms_group.attrs["NX_class"] = "NXtransformations"
transform_1 = transforms_group.create_dataset("transform_1", data=42)
transform_2 = transforms_group.create_dataset("transform_2", data=42)
transform_3 = transforms_group.create_dataset("transform_3", data=42)
transform_4 = transforms_group.create_dataset("transform_4", data=42)
transform_2.attrs["depends_on"] = transform_1.name
transform_3.attrs["depends_on"] = transform_2.name
transform_4.attrs["depends_on"] = transform_2.name
nexus_wrapper = NexusWrapper("test_file_with_transforms")
nexus_wrapper.load_file(entry_group, file)
Instrument(nexus_wrapper, NX_CLASS_DEFINITIONS)
transform_1_loaded = Transformation(nexus_wrapper, transform_1)
assert (
len(transform_1_loaded.get_dependents()) == 1
), "Expected transform 1 to have a registered dependent (transform 2)"
transform_2_loaded = Transformation(nexus_wrapper, transform_2)
assert (
len(transform_2_loaded.get_dependents()) == 2
), "Expected transform 2 to have 2 registered dependents (transforms 3 and 4)"
