def test_evaluate(self, val):
""" Ensures the evaluate class tests response for a False. """
nde = Equation('({1})')
rtn_val = [True, True, True]
nde.get_clause_evaluation = MagicMock(return_value=rtn_val)
self.assertTrue(nde.evaluate({}))
rtn_val = [True, False, True]
nde.get_clause_evaluation = MagicMock(return_value=rtn_val)
self.assertFalse(nde.evaluate({}))
def test_clausal_evaluation(self):
""" Tests the evaluation of a selection of clauses. """
eq = Equation('({1})') # Equation object to test.
fke_clause_true = Mock() # Fake clause to return true
fke_clause_true.evaluate = MagicMock(return_value=True)
fke_clause_false = Mock() # Fake clause to return false
fke_clause_false.evaluate = MagicMock(return_value=False)
eq._clauses = [fke_clause_true, fke_clause_false, fke_clause_true]
res = eq.get_clause_evaluation({})
assert (res[0] and (not res[1]) and res[2])
eq._clauses = [fke_clause_true, fke_clause_true, fke_clause_true]
res = eq.get_clause_evaluation({})
assert (res[0] and res[1] and res[2])
eq._clauses = [fke_clause_false, fke_clause_false, fke_clause_false]
res = eq.get_clause_evaluation({})
assert not (res[0] or res[1] or res[2])