def test_alias(self):
# Use load_definitions
ureg = UnitRegistry([
"canonical = [] = can = alias1 = alias2\n",
# overlapping aliases
"@alias canonical = alias2 = alias3\n",
# Against another alias
"@alias alias3 = alias4\n",
])
# Use define
ureg.define("@alias canonical = alias5")
# Test that new aliases work
# Test that pre-existing aliases and symbol are not eliminated
for a in ("can", "alias1", "alias2", "alias3", "alias4", "alias5"):
self.assertEqual(ureg.Unit(a), ureg.Unit("canonical"))
# Test that aliases defined multiple times are not duplicated
self.assertEqual(
ureg._units["canonical"].aliases,
("alias1", "alias2", "alias3", "alias4", "alias5"),
)
# Define against unknown name
self.assertRaises(KeyError, ureg.define, "@alias notexist = something")
def test_base(self):
ureg = UnitRegistry(None)
ureg.define("meter = [length]")
self.assertRaises(DefinitionSyntaxError, ureg.define,
"meter = [length]")
self.assertRaises(TypeError, ureg.define, list())
ureg.define("degC = kelvin; offset: 273.15")
def test_base(self):
ureg = UnitRegistry(None)
ureg.define("meter = [length]")
with pytest.raises(DefinitionSyntaxError):
ureg.define("meter = [length]")
with pytest.raises(TypeError):
ureg.define(list())
ureg.define("degC = kelvin; offset: 273.15")
def test_base(self):
ureg = UnitRegistry(None)
ureg.define('meter = [length]')
self.assertRaises(ValueError, ureg.define, 'meter = [length]')
self.assertRaises(TypeError, ureg.define, list())
x = ureg.define('degC = kelvin; offset: 273.15')
def test_base(self):
ureg = UnitRegistry(None)
ureg.define('meter = [length]')
self.assertRaises(ValueError, ureg.define, 'meter = [length]')
self.assertRaises(TypeError, ureg.define, list())
x = ureg.define('degC = kelvin; offset: 273.15')
