def test_conversion_errors(self):
r"""
Sends invalid unit strings to various functions
"""
#
root_unit, prefix = SI.check_abbreviation('badunit')
assert(root_unit == 'badunit')
assert(prefix == '')
#
with pytest.raises(ValueError):
SI.convert_to_si('badunit')
#
with pytest.raises(Exception):
UnitDecomposition.parse_unit_string('celsius')
#
with pytest.raises(KeyError):
UnitDecomposition.parse_unit_string('badunit')
#
with pytest.raises(AttributeError):
UnitDecomposition.build_unit_list('[pascal_1]')
#
with pytest.raises(ValueError):
UnitDecomposition.build_unit_list('[millipascal^1]')
#
with pytest.raises(KeyError):
UnitDecomposition.build_unit_list('[badunit^1]')
#
with pytest.raises(ValueError):
UnitConversion.convert_temperature(0.0, 'badunit', 'SI')
#
with pytest.raises(ValueError):
UnitConversion.convert_temperature(0.0, 'SI', 'badunit')
#
with pytest.raises(ValueError):
Distance.convert_to_si('badunit')
