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')
def test_get_conversion_factor(self):
r"""
Testing the get_conversion_factor function
"""
for unit_in, unit_out, test_fact in self._convertion_factor_test:
fact = UnitConversion.get_conversion_factor(unit_in, unit_out)
fact = round(fact * 1.0E9)
test_fact = round(test_fact * 1.0E9)
msg = 'Get conversion factor for {} to {} failed.'
msg = msg.format(unit_in, unit_out)
#
assert fact == test_fact, msg
def test_convert_temperature(self):
r"""
Testing values returned by temperature conversion
"""
for val_in, unit_in, unit_out, val_out in self.temperature_units:
val = UnitConversion.convert_value(val_in, unit_in, unit_out)
#
# applying a tolerance since were working with floating point values
val = round(val * 1.0E9)
val_out = round(val_out * 1.0E9)
msg = 'Temperature conversion from '+unit_in+' to '+unit_out+' failed.'
#
assert val == val_out, msg
def test_convert_abbrev_units(self):
r"""
Testing values returned when using common unit abbrevations
"""
for val_in, unit_in, unit_out, val_out in self.abbrev_units:
val = UnitConversion.convert_value(val_in, unit_in, unit_out)
#
# applying a tolerance since were working with floating point values
val = round(val * 1.0E9)
val_out = round(val_out * 1.0E9)
msg = 'Abbreviated unit conversion from {} to {} failed.'
msg = msg.format(unit_in, unit_out)
#
assert val == val_out, msg
def test_convert_all_units(self):
r"""
Testing values returned by a general test of many conversions
"""
for val_in, unit_in, unit_out, val_out in self.all_unit_test:
val = UnitConversion.convert_value(val_in, unit_in, unit_out)
#
# applying a tolerance since were working with floating point values
val = round(val * 1.0E9)
val_out = round(val_out * 1.0E9)
msg = 'Mutlitple unit conversion from {} to {} failed.'
msg = msg.format(unit_in, unit_out)
#
assert val == val_out, msg
def test_convert_formatted_units(self):
r"""
Testing values returned by formatted unit strings
"""
for val_in, unit_in, unit_out, val_out in self.formatted_units:
val = UnitConversion.convert_value(val_in, unit_in, unit_out)
#
# applying a tolerance since were working with floating point values
val = round(val * 1.0E9)
val_out = round(val_out * 1.0E9)
msg = 'Formatted unit conversion from {} to {} failed.'
msg = msg.format(unit_in, unit_out)
#
assert val == val_out, msg
#
# manually sending a formatted unit list with a prefix
unit_list = UnitDecomposition.build_unit_list('[millimeter^1]')
factor = process_unit_list(unit_list)
assert factor == 0.001