def test_process_allowed(self):
"""Test that when items haven't been
seen before that they are returned."""
new_item_filter = NewItemFilterOperation()
self.assertEquals(
new_item_filter.process(FAKE_DATA),
FAKE_DATA,
)
def test_process_allowed_only_new(self):
"""Test that only new items that haven't been
seen before are returned."""
new_item_filter = NewItemFilterOperation()
self.assertEquals(
new_item_filter.process(FAKE_DATA[:2]),
FAKE_DATA[:2],
)
self.assertEquals(
new_item_filter.process(FAKE_DATA),
[FAKE_DATA[-1]],
)
def test_no_new_raises_exception(self):
"""Test that StopProcessingException is raised if there are no new items."""
new_item_filter = NewItemFilterOperation()
new_item_filter.process(FAKE_DATA)
with self.assertRaises(StopProcessingException):
new_item_filter.process(FAKE_DATA)
