def test_is_acceptable(self):
premise = Premise(1)
arg1 = MagicMock()
arg2 = MagicMock()
arg3 = MagicMock()
rel = MagicMock()
rel.relfrom = arg1
rel.relto = premise
extension = MagicMock()
extension.arguments = [arg2]
self.assertTrue(premise.is_acceptable(extension, []))
self.assertFalse(premise.is_acceptable(extension, [rel]))
rel2 = MagicMock()
rel2.relfrom = arg2
rel2.relto = arg1
self.assertTrue(premise.is_acceptable(extension, [rel, rel2]))
rel3 = MagicMock()
rel3.relfrom = arg3
rel3.relto = arg1
self.assertFalse(premise.is_acceptable(extension, [rel, rel3]))