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test_extract_works_with_null_values, refs #423, #455

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Simon Willison 2022-08-27 20:32:01 -07:00
commit 165bc5fcb0
1 changed files with 21 additions and 0 deletions
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21
tests/test_extract.py
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@ -186,3 +186,24 @@ def test_extract_error_on_incompatible_existing_lookup_table(fresh_db):
fresh_db["species2"].insert({"id": 1, "common_name": 3.5})
with pytest.raises(InvalidColumns):
fresh_db["tree"].extract("common_name", table="species2")
def test_extract_works_with_null_values(fresh_db):
fresh_db["listens"].insert_all(
[
{"id": 1, "track_title": "foo", "album_title": "bar"},
{"id": 2, "track_title": "baz", "album_title": None},
],
pk="id",
)
fresh_db["listens"].extract(
columns=["album_title"], table="albums", fk_column="album_id"
)
assert list(fresh_db["listens"].rows) == [
{"id": 1, "track_title": "foo", "album_id": 1},
{"id": 2, "track_title": "baz", "album_id": 2},
]
assert list(fresh_db["albums"].rows) == [
{"id": 1, "album_title": "bar"},
{"id": 2, "album_title": None},
]