def test_pairs_items_with_no_match_with_none(self):
"""Items without a matching ID are paired with None when yielded."""
seq = [
IdValPair(9, "bar"),
]
seq2 = [
IdValPair(5, "foo"),
IdValPair(3, "moo"),
]
result = list(_align_by_ids(seq, seq2))
expected = [
(IdValPair(9, "bar"), None),
(None, IdValPair(5, "foo")),
(None, IdValPair(3, "moo")),
]
self.assertItemsEqual(result, expected)
def test_pairs_items_with_no_match_with_none(self):
"""Items without a matching ID are paired with None when yielded."""
seq = [
IdValPair(9, "bar"),
]
seq2 = [
IdValPair(5, "foo"),
IdValPair(3, "moo"),
]
result = list(_align_by_ids(seq, seq2))
expected = [
(IdValPair(9, "bar"), None),
(None, IdValPair(5, "foo")),
(None, IdValPair(3, "moo")),
]
self.assertItemsEqual(result, expected)
def test_yields_item_pairs_with_same_ids(self):
"""Items in yielded pairs shoučld be matched by their IDs."""
seq = [
IdValPair(8, "foo"),
IdValPair(3, "bar"),
IdValPair(7, "baz"),
IdValPair(9, "qux"),
]
# values scrambled to test that items are indeed matched by their IDs
seq2 = [
IdValPair(7, "qux"),
IdValPair(3, "bar"),
IdValPair(9, "foo"),
IdValPair(8, "baz"),
]
result = list(_align_by_ids(seq, seq2))
for item, item2 in result:
self.assertEqual(item.id, item2.id)
def test_yields_item_pairs_with_same_ids(self):
"""Items in yielded pairs shoučld be matched by their IDs."""
seq = [
IdValPair(8, "foo"),
IdValPair(3, "bar"),
IdValPair(7, "baz"),
IdValPair(9, "qux"),
]
# values scrambled to test that items are indeed matched by their IDs
seq2 = [
IdValPair(7, "qux"),
IdValPair(3, "bar"),
IdValPair(9, "foo"),
IdValPair(8, "baz"),
]
result = list(_align_by_ids(seq, seq2))
for item, item2 in result:
self.assertEqual(item.id, item2.id)
def test_yields_nothing_for_empty_iterables(self):
"""Giving two empty iterables should result in no pairs yielded."""
result = list(_align_by_ids([], []))
self.assertFalse(result)
def test_yields_nothing_for_empty_iterables(self): """Giving two empty iterables should result in no pairs yielded.""" result = list(_align_by_ids([], [])) self.assertFalse(result)