def test_unit_detection(value, expected, unit, templates):
"""Testing different combinations of number formats and all units."""
for template in templates:
text = template.format(value)
found_unit = Unit.find_first_unit(text)
assert found_unit is not None, 'Nothing found in {!r}'.format(text)
assert found_unit.value == expected and found_unit.unit == unit
assert isinstance(found_unit.to_useless(), type(''))
def test_compound_units(values, expected, units, template):
"""Testing arbitrary compound unit formats."""
text = template.format(*values)
found_units = Unit.find_first_unit(text)
assert found_units is not None
assert isinstance(found_units, list)
for i, found_unit in enumerate(found_units):
assert found_unit.unit == units[i]
assert found_unit.value == expected[i]
assert isinstance(found_unit.to_useless(), type(''))
