Files
border-red-post-nalati/backend/tests/test_migrations.py
T

52 lines
2.1 KiB
Python

import pytest
from alembic.autogenerate import compare_metadata
from alembic.migration import MigrationContext
from conftest import migrate
from fastapi.testclient import TestClient
from sqlalchemy import text
from app.db.session import Base
from app.main import create_app
def test_startup_requires_migration(database):
with pytest.raises(RuntimeError, match="alembic upgrade head"):
with TestClient(create_app(database)):
pass
def test_startup_rejects_previous_schema(database):
migrate(database, "0002_catalog")
with pytest.raises(RuntimeError, match="alembic upgrade head"):
with TestClient(create_app(database)):
pass
def test_upgrade_preserves_original_rows_and_repeated_upgrade(database):
migrate(database, "0001_baseline")
with database.begin() as connection:
connection.execute(
text("""INSERT INTO knowledge_items
(title, category, content, source_url, verification_status)
VALUES ('示例旧数据', '未分类', '原始正文', 'https://example.com/', 'verified')""")
)
# 模拟 create_all 建表后没有 Alembic 版本记录的旧工程。
connection.execute(text("DELETE FROM alembic_version"))
migrate(database)
migrate(database)
with database.connect() as connection:
row = connection.execute(text("SELECT * FROM knowledge_items")).mappings().one()
assert row["title"] == "示例旧数据" and row["content"] == "原始正文"
assert row["collected_at"] is None
assert row["verification_status"] == "pending"
assert connection.scalar(text("SELECT count(*) FROM audit_events")) == 2
assert (
connection.scalar(text("SELECT version_num FROM alembic_version"))
== "0003_retrieval_runs"
)
assert compare_metadata(MigrationContext.configure(connection), Base.metadata) == []
migrate(database, "0001_baseline", downgrade=True)
with database.connect() as connection:
assert connection.scalar(text("SELECT content FROM knowledge_items")) == "原始正文"
migrate(database)