def setUp(self):
self.simple_a = make_dimension("a")
self.simple_b = make_dimension("b")
self.dimension = make_compound_dimension("TEST", ((self.simple_a, 1),
(self.simple_b, -1)))
self.alt_dimension = make_compound_dimension("TESTAlt",
((self.simple_a, 1),
(self.simple_b, -2)))
def test_isinstance(self):
a = make_compound_dimension("baseline",
((self.dimA, 1), (self.dimB, -1)))
b = make_compound_dimension("compare",
((self.dimA, 1), (self.dimB, -1)))
unit_a = make_unit("fromA", a, 1)
self.assertTrue(unit_a(1).instance_of(a))
self.assertTrue(unit_a(1).instance_of(b))
def test_unit_name_exponent(self):
length = make_unit('Meters', self.dimension, 1)
time = make_unit('Seconds', self.alt_dimension, 1)
acceleration = make_compound_dimension("Acceleration",
((length, 1), (time, -2)))
mpss = make_compound_unit(acceleration, 1)
self.assertEqual("MetersPerSecondSquared", mpss.__name__)
def test_unit_name(self):
length = make_unit('Meters', self.dimension, 1)
time = make_unit('Seconds', self.alt_dimension, 1)
velocity = make_compound_dimension("Velocity",
((length, 1), (time, -1)))
mps = make_compound_unit(velocity, 1)
self.assertEqual("MetersPerSecond", mps.__name__)
def test_multiply_complex_unit(self):
first = make_compound_unit(self.dimension, 1)
second = make_compound_unit(self.alt_dimension, 1)
expected_dim = make_compound_dimension("EXPECTED",
((self.simple_a, 2),
(self.simple_b, -3)))
expected_unit = make_compound_unit(expected_dim, 1)
expected = expected_unit(1)
result = first(1) * second(1)
self.assertTrue(result.instance_of(expected_dim))
self.assertEqual(expected, result)