version with pydantic inheritance passing all the tests
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collerek
296
tests/test_foreign_keys.py
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296
tests/test_foreign_keys.py
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import databases
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import pytest
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import sqlalchemy
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from pydantic import ValidationError
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import ormar
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from ormar.exceptions import NoMatch, MultipleMatches, RelationshipInstanceError
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from tests.settings import DATABASE_URL
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database = databases.Database(DATABASE_URL, force_rollback=True)
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metadata = sqlalchemy.MetaData()
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class Album(ormar.Model):
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class Meta:
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tablename = "albums"
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metadata = metadata
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database = database
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id: ormar.Integer(primary_key=True)
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name: ormar.String(max_length=100)
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class Track(ormar.Model):
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class Meta:
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tablename = "tracks"
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metadata = metadata
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database = database
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id: ormar.Integer(primary_key=True)
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album: ormar.ForeignKey(Album)
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title: ormar.String(max_length=100)
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position: ormar.Integer()
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class Cover(ormar.Model):
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class Meta:
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tablename = "covers"
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metadata = metadata
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database = database
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id: ormar.Integer(primary_key=True)
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album: ormar.ForeignKey(Album, related_name="cover_pictures")
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title: ormar.String(max_length=100)
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class Organisation(ormar.Model):
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class Meta:
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tablename = "org"
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metadata = metadata
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database = database
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id: ormar.Integer(primary_key=True)
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ident: ormar.String(max_length=100)
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class Team(ormar.Model):
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class Meta:
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tablename = "teams"
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metadata = metadata
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database = database
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id: ormar.Integer(primary_key=True)
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org: ormar.ForeignKey(Organisation)
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name: ormar.String(max_length=100)
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class Member(ormar.Model):
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class Meta:
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tablename = "members"
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metadata = metadata
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database = database
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id: ormar.Integer(primary_key=True)
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team: ormar.ForeignKey(Team)
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email: ormar.String(max_length=100)
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@pytest.fixture(autouse=True, scope="module")
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def create_test_database():
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engine = sqlalchemy.create_engine(DATABASE_URL)
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metadata.create_all(engine)
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yield
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metadata.drop_all(engine)
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@pytest.mark.asyncio
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async def test_wrong_query_foreign_key_type():
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with pytest.raises(RelationshipInstanceError):
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Track(title="The Error", album="wrong_pk_type")
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@pytest.mark.asyncio
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async def test_setting_explicitly_empty_relation():
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async with database:
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track = Track(album=None, title="The Bird", position=1)
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assert track.album is None
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@pytest.mark.asyncio
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async def test_related_name():
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async with database:
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album = await Album.objects.create(name="Vanilla")
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await Cover.objects.create(album=album, title="The cover file")
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assert len(album.cover_pictures) == 1
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@pytest.mark.asyncio
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async def test_model_crud():
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async with database:
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album = Album(name="Malibu")
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await album.save()
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track1 = Track(album=album, title="The Bird", position=1)
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track2 = Track(album=album, title="Heart don't stand a chance", position=2)
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track3 = Track(album=album, title="The Waters", position=3)
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await track1.save()
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await track2.save()
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await track3.save()
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assert len(album.tracks) == 3
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assert album.tracks[1].title == "Heart don't stand a chance"
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track = await Track.objects.get(title="The Bird")
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assert track.album.pk == album.pk
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assert track.album.name is None
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await track.album.load()
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assert track.album.name == "Malibu"
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album1 = await Album.objects.get(name="Malibu")
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assert album1.pk == 1
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assert album1.tracks is None
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@pytest.mark.asyncio
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async def test_select_related():
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async with database:
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album = Album(name="Malibu")
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await album.save()
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track1 = Track(album=album, title="The Bird", position=1)
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track2 = Track(album=album, title="Heart don't stand a chance", position=2)
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track3 = Track(album=album, title="The Waters", position=3)
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await track1.save()
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await track2.save()
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await track3.save()
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fantasies = Album(name="Fantasies")
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await fantasies.save()
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track4 = Track(album=fantasies, title="Help I'm Alive", position=1)
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track5 = Track(album=fantasies, title="Sick Muse", position=2)
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track6 = Track(album=fantasies, title="Satellite Mind", position=3)
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await track4.save()
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await track5.save()
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await track6.save()
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track = await Track.objects.select_related("album").get(title="The Bird")
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assert track.album.name == "Malibu"
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tracks = await Track.objects.select_related("album").all()
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assert len(tracks) == 6
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@pytest.mark.asyncio
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async def test_fk_filter():
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async with database:
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malibu = Album(name="Malibu%")
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await malibu.save()
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await Track.objects.create(album=malibu, title="The Bird", position=1)
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await Track.objects.create(
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album=malibu, title="Heart don't stand a chance", position=2
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)
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await Track.objects.create(album=malibu, title="The Waters", position=3)
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fantasies = await Album.objects.create(name="Fantasies")
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await Track.objects.create(album=fantasies, title="Help I'm Alive", position=1)
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await Track.objects.create(album=fantasies, title="Sick Muse", position=2)
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await Track.objects.create(album=fantasies, title="Satellite Mind", position=3)
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tracks = (
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await Track.objects.select_related("album")
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.filter(album__name="Fantasies")
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.all()
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)
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assert len(tracks) == 3
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for track in tracks:
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assert track.album.name == "Fantasies"
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tracks = (
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await Track.objects.select_related("album")
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.filter(album__name__icontains="fan")
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.all()
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)
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assert len(tracks) == 3
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for track in tracks:
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assert track.album.name == "Fantasies"
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tracks = await Track.objects.filter(album__name__contains="fan").all()
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assert len(tracks) == 3
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for track in tracks:
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assert track.album.name == "Fantasies"
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tracks = await Track.objects.filter(album__name__contains="Malibu%").all()
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assert len(tracks) == 3
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tracks = await Track.objects.filter(album=malibu).select_related("album").all()
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assert len(tracks) == 3
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for track in tracks:
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assert track.album.name == "Malibu%"
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tracks = await Track.objects.select_related("album").all(album=malibu)
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assert len(tracks) == 3
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for track in tracks:
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assert track.album.name == "Malibu%"
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@pytest.mark.asyncio
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async def test_multiple_fk():
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async with database:
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acme = await Organisation.objects.create(ident="ACME Ltd")
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red_team = await Team.objects.create(org=acme, name="Red Team")
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blue_team = await Team.objects.create(org=acme, name="Blue Team")
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await Member.objects.create(team=red_team, email="a@example.org")
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await Member.objects.create(team=red_team, email="b@example.org")
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await Member.objects.create(team=blue_team, email="c@example.org")
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await Member.objects.create(team=blue_team, email="d@example.org")
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other = await Organisation.objects.create(ident="Other ltd")
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team = await Team.objects.create(org=other, name="Green Team")
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await Member.objects.create(team=team, email="e@example.org")
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members = (
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await Member.objects.select_related("team__org")
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.filter(team__org__ident="ACME Ltd")
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.all()
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)
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assert len(members) == 4
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for member in members:
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assert member.team.org.ident == "ACME Ltd"
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@pytest.mark.asyncio
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async def test_pk_filter():
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async with database:
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fantasies = await Album.objects.create(name="Test")
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await Track.objects.create(album=fantasies, title="Test1", position=1)
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await Track.objects.create(album=fantasies, title="Test2", position=2)
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await Track.objects.create(album=fantasies, title="Test3", position=3)
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tracks = await Track.objects.select_related("album").filter(pk=1).all()
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assert len(tracks) == 1
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tracks = (
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await Track.objects.select_related("album")
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.filter(position=2, album__name="Test")
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.all()
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)
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assert len(tracks) == 1
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@pytest.mark.asyncio
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async def test_limit_and_offset():
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async with database:
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fantasies = await Album.objects.create(name="Limitless")
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await Track.objects.create(id=None, album=fantasies, title="Sample", position=1)
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await Track.objects.create(album=fantasies, title="Sample2", position=2)
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await Track.objects.create(album=fantasies, title="Sample3", position=3)
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tracks = await Track.objects.limit(1).all()
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assert len(tracks) == 1
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assert tracks[0].title == "Sample"
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tracks = await Track.objects.limit(1).offset(1).all()
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assert len(tracks) == 1
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assert tracks[0].title == "Sample2"
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@pytest.mark.asyncio
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async def test_get_exceptions():
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async with database:
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fantasies = await Album.objects.create(name="Test")
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with pytest.raises(NoMatch):
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await Album.objects.get(name="Test2")
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await Track.objects.create(album=fantasies, title="Test1", position=1)
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await Track.objects.create(album=fantasies, title="Test2", position=2)
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await Track.objects.create(album=fantasies, title="Test3", position=3)
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with pytest.raises(MultipleMatches):
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await Track.objects.select_related("album").get(album=fantasies)
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@pytest.mark.asyncio
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async def test_wrong_model_passed_as_fk():
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with pytest.raises(RelationshipInstanceError):
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org = await Organisation.objects.create(ident="ACME Ltd")
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await Track.objects.create(album=org, title="Test1", position=1)
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