74 lines
2.0 KiB
Python
74 lines
2.0 KiB
Python
from typing import Optional
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import databases
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import pytest
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import sqlalchemy
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from sqlalchemy import create_engine
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from sqlalchemy.dialects import postgresql
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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 Artist(ormar.Model):
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class Meta:
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tablename = "artists"
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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)
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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)
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artist: Optional[Artist] = ormar.ForeignKey(Artist, ondelete='CASCADE')
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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(primary_key=True)
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album: Optional[Album] = ormar.ForeignKey(Album, ondelete='CASCADE')
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title: str = 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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if "sqlite" in DATABASE_URL:
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with engine.connect() as connection:
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connection.execute("PRAGMA foreign_keys = ON;")
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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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# def test_table_structures():
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# col = Album.Meta.table.columns.get('artist')
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# breakpoint()
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@pytest.mark.asyncio
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async def test_simple_cascade():
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async with database:
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async with database.transaction(force_rollback=True):
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artist = await Artist(name='Dr Alban').save()
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await Album(name="Jamaica", artist=artist).save()
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await Artist.objects.delete(id=artist.id)
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albums = await Album.objects.all()
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assert len(albums) == 0
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