def test_remove_filter_removes_a_registered_filter(self):
filter = Filter()
filterer = Filterer()
filterer.add_filter(filter)
filterer.remove_filter(filter)
self.assertEqual(filterer.filters, [])
def test_remove_filter_doesnt_raises_an_error_if_filter_not_in_filters(
self):
filter = Filter()
filterer = Filterer()
try:
filterer.remove_filter(filter)
except Exception as e:
self.fail(f"Shouldn't raise an error. Error: {e}")
def test_add_filter_adds_filter_only_once(self):
filter = Filter()
filterer = Filterer()
filterer.add_filter(filter)
self.assertEqual(filterer.filters, [filter])
filterer.add_filter(filter)
self.assertEqual(filterer.filters, [filter])
def test_filter_returns_true_if_all_filters_pass(self):
filterer = Filterer()
filterer.filters = [
Mock(return_value=True),
Mock(return_value=True),
Mock(return_value=True),
]
record = Mock()
self.assertTrue(filterer.filter(record))
for filter in filterer.filters:
filter.assert_called_with(record)
def test_filter_returns_false_if_a_filter_fails(self):
filterer = Filterer()
filterer.filters = [
Mock(return_value=True),
Mock(return_value=False),
Mock(return_value=True),
]
record = Mock()
self.assertFalse(filterer.filter(record))
filterer.filters[0].assert_called_with(record)
filterer.filters[1].assert_called_with(record)
filterer.filters[2].assert_not_called()