def test_string_override():
dm_ramp, ref_data = create_models()
step = DQInitStep(override_mask="some_file.fits")
# Verify stpipe treats string as filename and attempts to open
with pytest.raises(FileNotFoundError):
step.get_reference_file(dm_ramp, 'mask')
def test_valid_model_override():
dm_ramp, ref_data = create_models()
step = DQInitStep(override_mask=ref_data)
# Verify get_reference_file() returns an override model.
fetched_reference = step.get_reference_file(dm_ramp, 'mask')
assert isinstance(fetched_reference, MaskModel), \
"get_reference_file() should return a model for this override."
# Verify no exceptions occur during DQ processing.
step.process(dm_ramp)