def test_class_condition_satisfied_by_instances(self):
class A: pass
isAnA = Condition(A)
anA = A()
self.assertTrue(isAnA.matches(anA))
def test_class_condition_not_satisfied_by_instances_of_supertypes(self):
class A: pass
class B(A): pass
isAB = Condition(B)
anA = A()
self.assertFalse(isAB.matches(A))
def test_class_condition_satisfied_by_instances_of_subtypes(self):
class A: pass
class B(A): pass
isAnA = Condition(A)
aB = B()
self.assertTrue(isAnA.matches(aB))
def test_function_condition_satisfied_when_function_returns_true(self):
isEven = Condition(lambda number: number % 2 == 0)
self.assertTrue(isEven.matches(4))
self.assertFalse(isEven.matches(3))
def test_value_condition_not_satisfied_by_other_value(self):
is5 = Condition(5)
self.assertFalse(is5.matches(7))
def test_value_condition_satisfied_by_same_value(self):
is5 = Condition(5)
self.assertTrue(is5.matches(5))
def test_class_condition_not_satisfied_by_class_object(self):
class A: pass
isAnA = Condition(A)
self.assertFalse(isAnA.matches(A))
