390 lines
14 KiB
Python
390 lines
14 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(
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Album, related_name="cover_pictures", name="album_id"
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)
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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(
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album=album, title="The Bird", position=1, tonation=ton1
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)
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await Track.objects.create(
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album=album,
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title="Heart don't stand a chance",
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position=2,
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tonation=ton1,
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)
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await Track.objects.create(
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album=album, title="The Waters", position=3, tonation=ton1
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)
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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(
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album=fantasies, title="Help I'm Alive", position=1
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)
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await Track.objects.create(album=fantasies, title="Sick Muse", position=2)
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await Track.objects.create(
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album=fantasies, title="Satellite Mind", position=3
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)
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await Cover.objects.create(
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title="Cover3", album=fantasies, artist="Artist 3"
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)
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await Cover.objects.create(
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title="Cover4", album=fantasies, artist="Artist 4"
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)
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album = (
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await Album.objects.filter(name="Malibu")
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.prefetch_related(["tracks__tonation", "cover_pictures"])
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.get()
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)
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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 (
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album.tracks[0].tonation.name
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== album.tracks[2].tonation.name
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== "B-mol"
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)
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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(
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title="The Bird"
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)
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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 = (
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await Track.objects.prefetch_related(["album__cover_pictures"])
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.exclude_fields("album__cover_pictures__artist")
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.get(title="The Bird")
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)
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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(
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album=album, title="Heart don't stand a chance", position=2
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)
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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(
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["album__cover_pictures", "album__shops__division"]
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).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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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(
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title="The Bird"
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)
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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 = (
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await Album.objects.select_related(["tracks", "shops"])
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.filter(name="Malibu")
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.prefetch_related(["cover_pictures", "shops__division"])
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.first()
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)
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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(
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album=album, title="The Bird", position=1, tonation=ton1
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)
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await Track.objects.create(
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album=album,
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title="Heart don't stand a chance",
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position=2,
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tonation=ton1,
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)
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await Track.objects.create(
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album=album, title="The Waters", position=3, tonation=ton1
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)
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album = (
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await Album.objects.select_related("tracks__tonation__rand_set")
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.filter(name="Malibu")
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.prefetch_related(["cover_pictures", "shops__division"])
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.order_by(
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["-shops__name", "-cover_pictures__artist", "shops__division__name"]
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)
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.get()
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)
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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 2"
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assert len(album.shops) == 2
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assert album.shops[0].name == "Shop 2"
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assert album.shops[0].division.name == "Div 1"
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track = (
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await Track.objects.select_related("album")
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.prefetch_related(["album__cover_pictures", "album__shops__division"])
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.get(title="The Bird")
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)
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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(
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album=album, title="The Bird", position=1, tonation=ton1
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)
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await Track.objects.create(
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album=album,
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title="Heart don't stand a chance",
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position=2,
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tonation=ton1,
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)
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await Track.objects.create(
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album=album, title="The Waters", position=3, tonation=ton1
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)
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album = (
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await Album.objects.select_related("tracks__tonation__rand_set")
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.filter(name="Malibu")
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.prefetch_related(["cover_pictures", "shops__division"])
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.exclude_fields({"shops": {"division": {"name"}}})
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.get()
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)
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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 = (
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await Album.objects.select_related("tracks")
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.filter(name="Malibu")
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.prefetch_related(["cover_pictures", "shops__division"])
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.fields(
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{
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"name": ...,
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"shops": {"division"},
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"cover_pictures": {"id": ..., "title": ...},
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}
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)
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.exclude_fields({"shops": {"division": {"name"}}})
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.get()
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)
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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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