def test_contains_atom_returns_false_if_the_dependency_graph_does_not_contain_a_definition_of_the_given_atom(
self):
dep_graph = DepGraph()
# A -> B
A = _a_mock_definition()
B = _a_mock_definition()
uses = [(A, B)]
for use in uses:
dep_graph.add_edge(*use)
result = dep_graph.contains_atom(Register(8, 4))
self.assertFalse(result)
def test_contains_atom_returns_true_if_the_dependency_graph_contains_a_definition_of_the_given_atom(
self):
dep_graph = DepGraph()
r0 = Register(8, 4)
# A -> B
A = _a_mock_definition(r0)
B = _a_mock_definition()
uses = [(A, B)]
for use in uses:
dep_graph.add_edge(*use)
result = dep_graph.contains_atom(r0)
self.assertTrue(result)