def test_table_to_workspace(self) -> None:
r"""Test the conversion of a TableWorkspace containing the masked detector ID's to a MaskWorkspace object"""
output_workspace = 'test_table_to_workspace_masked'
# Have a fake mask table, masking bank 42
mask_table = CreateEmptyTableWorkspace(OutputWorkspace=output_workspace)
mask_table.addColumn(type='int', name='Detector ID')
begin, end = 167936, 172030 # # Bank 42 has detector ID's from 167936 to 172030
for detector_id in range(begin, 1 + end):
mask_table.addRow([detector_id])
# Convert to MaskWorkspace
mask_table = _table_to_workspace(mask_table)
# Check the output workspace is of type MaskWorkspace
assert isinstance(mask_table, MaskWorkspace)
# Check the output workspace has 1 on workspace indexes for bank 42, and 0 elsewhere
mask_flags = mask_table.extractY().flatten()
offset = 3 # due to the detector monitors, workspace_index = detector_id + offset
masked_workspace_indexes = slice(begin + offset, 1 + end + offset)
assert np.all(mask_flags[masked_workspace_indexes]) # all values are 1
mask_flags = np.delete(mask_flags, masked_workspace_indexes)
assert not np.any(mask_flags) # no value is 1
DeleteWorkspace(output_workspace)
