def test_get_base_units_different_exponent(self):
sysname = 'mysys3'
ureg = UnitRegistry()
g = ureg.get_group('test-imperial')
g.add_units('inch', 'yard', 'pint')
c = ureg.get_compatible_units('meter', 'test-imperial')
lines = ['@system %s using test-imperial' % sysname,
'pint:meter',
]
s = System.from_lines(lines, ureg.get_base_units, g._groups_systems)
# base_factor, destination_units
c = ureg.get_base_units('inch', system=sysname)
self.assertAlmostEqual(c[0], 0.326, places=3)
self.assertEqual(c[1], {'pint': 1./3})
c = ureg.get_base_units('cm', system=sysname)
self.assertAlmostEqual(c[0], 0.1283, places=3)
self.assertEqual(c[1], {'pint': 1./3})
c = ureg.get_base_units('inch**2', system=sysname)
self.assertAlmostEqual(c[0], 0.326**2, places=3)
self.assertEqual(c[1], {'pint': 2./3})
c = ureg.get_base_units('cm**2', system=sysname)
self.assertAlmostEqual(c[0], 0.1283**2, places=3)
self.assertEqual(c[1], {'pint': 2./3})
def test_get_base_units_different_exponent(self):
sysname = "mysys3"
ureg = UnitRegistry()
g = ureg.get_group("test-imperial")
g.add_units("inch", "yard", "pint")
c = ureg.get_compatible_units("meter", "test-imperial")
lines = ["@system %s using test-imperial" % sysname, "pint:meter"]
s = ureg.System.from_lines(lines, ureg.get_base_units)
ureg._systems[s.name] = s
# base_factor, destination_units
c = ureg.get_base_units("inch", system=sysname)
self.assertAlmostEqual(c[0], 0.326, places=3)
self.assertEqual(c[1], {"pint": 1.0 / 3})
c = ureg.get_base_units("cm", system=sysname)
self.assertAlmostEqual(c[0], 0.1283, places=3)
self.assertEqual(c[1], {"pint": 1.0 / 3})
c = ureg.get_base_units("inch**2", system=sysname)
self.assertAlmostEqual(c[0], 0.326 ** 2, places=3)
self.assertEqual(c[1], {"pint": 2.0 / 3})
c = ureg.get_base_units("cm**2", system=sysname)
self.assertAlmostEqual(c[0], 0.1283 ** 2, places=3)
self.assertEqual(c[1], {"pint": 2.0 / 3})
def test_get_base_units_relation(self):
sysname = "mysys4"
ureg = UnitRegistry()
g = ureg.get_group("test-imperial")
g.add_units("inch", "yard", "pint")
lines = ["@system %s using test-imperial" % sysname, "mph:meter"]
s = ureg.System.from_lines(lines, ureg.get_base_units)
ureg._systems[s.name] = s
# base_factor, destination_units
c = ureg.get_base_units("inch", system=sysname)
self.assertAlmostEqual(c[0], 0.056, places=2)
self.assertEqual(c[1], {"mph": 1, "second": 1})
c = ureg.get_base_units("kph", system=sysname)
self.assertAlmostEqual(c[0], 0.6213, places=3)
self.assertEqual(c[1], {"mph": 1})
def test_get_base_units(self):
sysname = "mysys2"
ureg = UnitRegistry()
g = ureg.get_group("test-imperial")
g.add_units("inch", "yard", "pint")
lines = ["@system %s using test-imperial" % sysname, "inch"]
s = ureg.System.from_lines(lines, ureg.get_base_units)
ureg._systems[s.name] = s
# base_factor, destination_units
c = ureg.get_base_units("inch", system=sysname)
self.assertAlmostEqual(c[0], 1)
self.assertEqual(c[1], {"inch": 1})
c = ureg.get_base_units("cm", system=sysname)
self.assertAlmostEqual(c[0], 1.0 / 2.54)
self.assertEqual(c[1], {"inch": 1})
def test_get_base_units_relation(self):
sysname = 'mysys4'
ureg = UnitRegistry()
g = ureg.get_group('test-imperial')
g.add_units('inch', 'yard', 'pint')
lines = ['@system %s using test-imperial' % sysname,
'mph:meter',
]
s = System.from_lines(lines, ureg.get_base_units, g._groups_systems)
# base_factor, destination_units
c = ureg.get_base_units('inch', system=sysname)
self.assertAlmostEqual(c[0], 0.0568, places=3)
self.assertEqual(c[1], {'mph': 1, 'second': 1})
c = ureg.get_base_units('kph', system=sysname)
self.assertAlmostEqual(c[0], .6214, places=4)
self.assertEqual(c[1], {'mph': 1})
def test_get_base_units(self):
sysname = 'mysys2'
ureg = UnitRegistry()
g = ureg.get_group('test-imperial')
g.add_units('inch', 'yard', 'pint')
lines = ['@system %s using test-imperial' % sysname,
'inch',
]
s = System.from_lines(lines, ureg.get_base_units, g._groups_systems)
# base_factor, destination_units
c = ureg.get_base_units('inch', system=sysname)
self.assertAlmostEqual(c[0], 1)
self.assertEqual(c[1], {'inch': 1})
c = ureg.get_base_units('cm', system=sysname)
self.assertAlmostEqual(c[0], 1./2.54)
self.assertEqual(c[1], {'inch': 1})
def test_issue66b(self):
ureg = UnitRegistry()
self.assertEqual(ureg.get_base_units(ureg.kelvin),
(1.0, ureg.Unit(UnitsContainer({'kelvin': 1}))))
self.assertEqual(ureg.get_base_units(ureg.degC),
(1.0, ureg.Unit(UnitsContainer({'kelvin': 1}))))
def test_issue66b(self):
ureg = UnitRegistry()
self.assertEqual(ureg.get_base_units(ureg.kelvin.units),
(None, UnitsContainer({'kelvin': 1})))
self.assertEqual(ureg.get_base_units(ureg.degC.units),
(None, UnitsContainer({'kelvin': 1})))
def test_issue66b(self):
ureg = UnitRegistry()
self.assertEqual(ureg.get_base_units(ureg.kelvin),
(1.0, ureg.Unit(UnitsContainer({'kelvin': 1}))))
self.assertEqual(ureg.get_base_units(ureg.degC),
(1.0, ureg.Unit(UnitsContainer({'kelvin': 1}))))
def test_issue66b(self):
ureg = UnitRegistry()
self.assertEqual(ureg.get_base_units(ureg.degK.units),
(None, UnitsContainer({'degK': 1})))
self.assertEqual(ureg.get_base_units(ureg.degC.units),
(None, UnitsContainer({'degK': 1})))
def test_issue66b(self):
ureg = UnitRegistry()
self.assertEqual(ureg.get_base_units(ureg.degK.units),
(1., UnitsContainer({'degK': 1})))
self.assertEqual(ureg.get_base_units(ureg.degC.units),
(1., UnitsContainer({'degC': 1})))
