310 lines
13 KiB
Python
310 lines
13 KiB
Python
from typing import List, Optional
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import databases
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import pytest
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import sqlalchemy
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import ormar
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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 RandomSet(ormar.Model):
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class Meta:
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tablename = "randoms"
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metadata = metadata
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database = database
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id: int = ormar.Integer(name='random_id', primary_key=True)
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name: str = ormar.String(max_length=100)
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class Tonation(ormar.Model):
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class Meta:
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tablename = "tonations"
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metadata = metadata
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database = database
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id: int = ormar.Integer(primary_key=True)
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name: str = ormar.String(name='tonation_name', max_length=100)
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rand_set: Optional[RandomSet] = ormar.ForeignKey(RandomSet)
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class Division(ormar.Model):
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class Meta:
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tablename = "divisions"
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metadata = metadata
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database = database
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id: int = ormar.Integer(name='division_id', primary_key=True)
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name: str = ormar.String(max_length=100, nullable=True)
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class Shop(ormar.Model):
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class Meta:
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tablename = "shops"
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metadata = metadata
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database = database
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id: int = ormar.Integer(primary_key=True)
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name: str = ormar.String(max_length=100, nullable=True)
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division: Optional[Division] = ormar.ForeignKey(Division)
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class AlbumShops(ormar.Model):
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class Meta:
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tablename = "albums_x_shops"
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metadata = metadata
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database = database
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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: int = ormar.Integer(primary_key=True)
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name: str = ormar.String(max_length=100, nullable=True)
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shops: List[Shop] = ormar.ManyToMany(to=Shop, through=AlbumShops)
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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: int = ormar.Integer(name='track_id', primary_key=True)
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album: Optional[Album] = ormar.ForeignKey(Album)
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title: str = ormar.String(max_length=100)
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position: int = ormar.Integer()
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tonation: Optional[Tonation] = ormar.ForeignKey(Tonation, name='tonation_id')
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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: int = ormar.Integer(primary_key=True)
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album: Optional[Album] = ormar.ForeignKey(Album, related_name="cover_pictures", name='album_id')
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title: str = ormar.String(max_length=100)
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artist: str = ormar.String(max_length=200, nullable=True)
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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.drop_all(engine)
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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_prefetch_related():
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async with database:
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async with database.transaction(force_rollback=True):
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album = Album(name="Malibu")
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await album.save()
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ton1 = await Tonation.objects.create(name='B-mol')
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await Track.objects.create(album=album, title="The Bird", position=1, tonation=ton1)
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await Track.objects.create(album=album, title="Heart don't stand a chance", position=2, tonation=ton1)
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await Track.objects.create(album=album, title="The Waters", position=3, tonation=ton1)
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await Cover.objects.create(title='Cover1', album=album, artist='Artist 1')
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await Cover.objects.create(title='Cover2', album=album, artist='Artist 2')
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fantasies = Album(name="Fantasies")
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await fantasies.save()
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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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await Cover.objects.create(title='Cover3', album=fantasies, artist='Artist 3')
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await Cover.objects.create(title='Cover4', album=fantasies, artist='Artist 4')
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album = await Album.objects.filter(name='Malibu').prefetch_related(
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['tracks__tonation', 'cover_pictures']).get()
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assert len(album.tracks) == 3
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assert album.tracks[0].title == 'The Bird'
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assert len(album.cover_pictures) == 2
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assert album.cover_pictures[0].title == 'Cover1'
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assert album.tracks[0].tonation.name == album.tracks[2].tonation.name == 'B-mol'
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albums = await Album.objects.prefetch_related('tracks').all()
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assert len(albums[0].tracks) == 3
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assert len(albums[1].tracks) == 3
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assert albums[0].tracks[0].title == "The Bird"
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assert albums[1].tracks[0].title == "Help I'm Alive"
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track = await Track.objects.prefetch_related(["album__cover_pictures"]).get(title="The Bird")
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assert track.album.name == "Malibu"
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assert len(track.album.cover_pictures) == 2
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assert track.album.cover_pictures[0].artist == 'Artist 1'
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track = await Track.objects.prefetch_related(["album__cover_pictures"]).exclude_fields(
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'album__cover_pictures__artist').get(title="The Bird")
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assert track.album.name == "Malibu"
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assert len(track.album.cover_pictures) == 2
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assert track.album.cover_pictures[0].artist is None
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tracks = await Track.objects.prefetch_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_prefetch_related_with_many_to_many():
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async with database:
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async with database.transaction(force_rollback=True):
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div = await Division.objects.create(name='Div 1')
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shop1 = await Shop.objects.create(name='Shop 1', division=div)
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shop2 = await Shop.objects.create(name='Shop 2', division=div)
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album = Album(name="Malibu")
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await album.save()
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await album.shops.add(shop1)
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await album.shops.add(shop2)
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await Track.objects.create(album=album, title="The Bird", position=1)
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await Track.objects.create(album=album, title="Heart don't stand a chance", position=2)
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await Track.objects.create(album=album, title="The Waters", position=3)
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await Cover.objects.create(title='Cover1', album=album, artist='Artist 1')
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await Cover.objects.create(title='Cover2', album=album, artist='Artist 2')
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track = await Track.objects.prefetch_related(["album__cover_pictures", "album__shops__division"]).get(
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title="The Bird")
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assert track.album.name == "Malibu"
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assert len(track.album.cover_pictures) == 2
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assert track.album.cover_pictures[0].artist == 'Artist 1'
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assert len(track.album.shops) == 2
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assert track.album.shops[0].name == 'Shop 1'
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assert track.album.shops[0].division.name == 'Div 1'
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album2 = Album(name="Malibu 2")
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await album2.save()
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await album2.shops.add(shop1)
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await album2.shops.add(shop2)
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await Track.objects.create(album=album2, title="The Bird 2", position=1)
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tracks = await Track.objects.prefetch_related(["album__shops"]).all()
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assert tracks[0].album.name == 'Malibu'
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assert tracks[0].album.shops[0].name == "Shop 1"
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assert tracks[3].album.name == 'Malibu 2'
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assert tracks[3].album.shops[0].name == "Shop 1"
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assert tracks[0].album.shops[0] == tracks[3].album.shops[0]
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assert id(tracks[0].album.shops[0]) == id(tracks[3].album.shops[0])
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tracks[0].album.shops[0].name = 'Dummy'
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assert tracks[0].album.shops[0].name == tracks[3].album.shops[0].name
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@pytest.mark.asyncio
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async def test_prefetch_related_empty():
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async with database:
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async with database.transaction(force_rollback=True):
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await Track.objects.create(title="The Bird", position=1)
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track = await Track.objects.prefetch_related(["album__cover_pictures"]).get(title="The Bird")
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assert track.title == 'The Bird'
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assert track.album is None
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@pytest.mark.asyncio
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async def test_prefetch_related_with_select_related():
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async with database:
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async with database.transaction(force_rollback=True):
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div = await Division.objects.create(name='Div 1')
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shop1 = await Shop.objects.create(name='Shop 1', division=div)
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shop2 = await Shop.objects.create(name='Shop 2', division=div)
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album = Album(name="Malibu")
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await album.save()
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await album.shops.add(shop1)
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await album.shops.add(shop2)
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await Cover.objects.create(title='Cover1', album=album, artist='Artist 1')
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await Cover.objects.create(title='Cover2', album=album, artist='Artist 2')
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album = await Album.objects.select_related(['tracks', 'shops']).filter(name='Malibu').prefetch_related(
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['cover_pictures', 'shops__division']).get()
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assert len(album.tracks) == 0
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assert len(album.cover_pictures) == 2
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assert album.shops[0].division.name == 'Div 1'
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rand_set = await RandomSet.objects.create(name='Rand 1')
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ton1 = await Tonation.objects.create(name='B-mol', rand_set=rand_set)
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await Track.objects.create(album=album, title="The Bird", position=1, tonation=ton1)
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await Track.objects.create(album=album, title="Heart don't stand a chance", position=2, tonation=ton1)
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await Track.objects.create(album=album, title="The Waters", position=3, tonation=ton1)
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album = await Album.objects.select_related('tracks__tonation__rand_set').filter(
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name='Malibu').prefetch_related(
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['cover_pictures', 'shops__division']).get()
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assert len(album.tracks) == 3
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assert album.tracks[0].tonation == album.tracks[2].tonation == ton1
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assert len(album.cover_pictures) == 2
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assert album.cover_pictures[0].artist == 'Artist 1'
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assert len(album.shops) == 2
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assert album.shops[0].name == 'Shop 1'
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assert album.shops[0].division.name == 'Div 1'
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track = await Track.objects.select_related('album').prefetch_related(
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["album__cover_pictures", "album__shops__division"]).get(
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title="The Bird")
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assert track.album.name == "Malibu"
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assert len(track.album.cover_pictures) == 2
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assert track.album.cover_pictures[0].artist == 'Artist 1'
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assert len(track.album.shops) == 2
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assert track.album.shops[0].name == 'Shop 1'
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assert track.album.shops[0].division.name == 'Div 1'
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@pytest.mark.asyncio
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async def test_prefetch_related_with_select_related_and_fields():
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async with database:
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async with database.transaction(force_rollback=True):
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div = await Division.objects.create(name='Div 1')
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shop1 = await Shop.objects.create(name='Shop 1', division=div)
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shop2 = await Shop.objects.create(name='Shop 2', division=div)
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album = Album(name="Malibu")
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await album.save()
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await album.shops.add(shop1)
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await album.shops.add(shop2)
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await Cover.objects.create(title='Cover1', album=album, artist='Artist 1')
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await Cover.objects.create(title='Cover2', album=album, artist='Artist 2')
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rand_set = await RandomSet.objects.create(name='Rand 1')
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ton1 = await Tonation.objects.create(name='B-mol', rand_set=rand_set)
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await Track.objects.create(album=album, title="The Bird", position=1, tonation=ton1)
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await Track.objects.create(album=album, title="Heart don't stand a chance", position=2, tonation=ton1)
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await Track.objects.create(album=album, title="The Waters", position=3, tonation=ton1)
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album = await Album.objects.select_related('tracks__tonation__rand_set').filter(
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name='Malibu').prefetch_related(
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['cover_pictures', 'shops__division']).exclude_fields({'shops': {'division': {'name'}}}).get()
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assert len(album.tracks) == 3
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assert album.tracks[0].tonation == album.tracks[2].tonation == ton1
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assert len(album.cover_pictures) == 2
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assert album.cover_pictures[0].artist == 'Artist 1'
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assert len(album.shops) == 2
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assert album.shops[0].name == 'Shop 1'
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assert album.shops[0].division.name is None
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album = await Album.objects.select_related('tracks').filter(
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name='Malibu').prefetch_related(
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['cover_pictures', 'shops__division']).fields(
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{'name': ..., 'shops': {'division'}, 'cover_pictures': {'id': ..., 'title': ...}}
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).exclude_fields({'shops': {'division': {'name'}}}).get()
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assert len(album.tracks) == 3
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assert len(album.cover_pictures) == 2
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assert album.cover_pictures[0].artist is None
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assert album.cover_pictures[0].title is not None
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assert len(album.shops) == 2
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assert album.shops[0].name is None
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assert album.shops[0].division is not None
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assert album.shops[0].division.name is None
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