def test_with_string_type(self):
"""Test that an extraction that is to match a string is not changed
by passing through this function, other than to make a single entry
into a list."""
value = "kittens"
result = create_constraint(value)
self.assertEqual(result, [value])
def test_with_float_type(self):
"""Test that an extraction that is to match a float results in the
creation of a lambda function which matches the expected values."""
value = 10.0
result = create_constraint(value)
self.assertTrue(islambda(result))
crd = self.i_crd.copy(points=value)
self.assertTrue(result(crd.cell(0)))
crd = self.f_crd.copy(points=value)
self.assertTrue(result(crd.cell(0)))
crd = self.i_crd.copy(points=20)
self.assertFalse(result(crd.cell(0)))
def test_with_int_type(self):
"""Test that an extraction that is to match an integer results in the
creation of a lambda function. This is done in case unit conversion
is applied, in which case the cube data may be converted imprecisely,
e.g. 273.15K might become 1.0E-8C, which will not match a 0C constraint
unless we use the lambda function to add some tolerance."""
value = 10
result = create_constraint(value)
self.assertTrue(islambda(result))
crd = self.i_crd.copy(points=value)
self.assertTrue(result(crd.cell(0)))
crd = self.f_crd.copy(points=value)
self.assertTrue(result(crd.cell(0)))
