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101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
import os
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import subprocess
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import unittest
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from pathlib import Path
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import psycopg
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from sqlalchemy import create_engine, inspect, text
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from sqlalchemy.engine import make_url
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class MigrationTests(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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db_url_raw = os.getenv("DATABASE_URL", "")
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if not db_url_raw.startswith("postgresql"):
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raise unittest.SkipTest("Migration test requires PostgreSQL DATABASE_URL")
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cls.project_root = Path(__file__).resolve().parents[1]
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cls.base_url = make_url(db_url_raw)
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cls.test_db_name = f"{cls.base_url.database}_migration_test"
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cls.test_url = cls.base_url.set(database=cls.test_db_name)
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cls.admin_url = cls.base_url.set(database="postgres")
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cls._drop_create_database()
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cls._run_alembic_upgrade()
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cls.engine = create_engine(cls.test_url)
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cls.inspector = inspect(cls.engine)
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@classmethod
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def tearDownClass(cls):
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if hasattr(cls, "engine"):
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cls.engine.dispose()
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if hasattr(cls, "admin_url") and hasattr(cls, "test_db_name"):
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cls._drop_database()
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@classmethod
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def _to_psycopg_dsn(cls, url):
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return url.render_as_string(hide_password=False).replace("+psycopg", "")
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@classmethod
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def _drop_create_database(cls):
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dsn = cls._to_psycopg_dsn(cls.admin_url)
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with psycopg.connect(dsn, autocommit=True) as conn:
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conn.execute(
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"SELECT pg_terminate_backend(pid) "
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"FROM pg_stat_activity "
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"WHERE datname = %s AND pid <> pg_backend_pid()",
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(cls.test_db_name,),
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)
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conn.execute(f'DROP DATABASE IF EXISTS "{cls.test_db_name}"')
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conn.execute(f'CREATE DATABASE "{cls.test_db_name}"')
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@classmethod
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def _drop_database(cls):
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dsn = cls._to_psycopg_dsn(cls.admin_url)
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with psycopg.connect(dsn, autocommit=True) as conn:
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conn.execute(
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"SELECT pg_terminate_backend(pid) "
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"FROM pg_stat_activity "
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"WHERE datname = %s AND pid <> pg_backend_pid()",
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(cls.test_db_name,),
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)
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conn.execute(f'DROP DATABASE IF EXISTS "{cls.test_db_name}"')
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@classmethod
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def _run_alembic_upgrade(cls):
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env = os.environ.copy()
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env["DATABASE_URL"] = cls.test_url.render_as_string(hide_password=False)
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env["PYTHONPATH"] = str(cls.project_root)
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subprocess.run(
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["alembic", "upgrade", "head"],
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cwd=cls.project_root,
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env=env,
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check=True,
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capture_output=True,
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text=True,
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)
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def test_upgrade_head_creates_expected_tables(self):
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expected = {
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"admin_users",
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"topics",
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"statuses",
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"form_fields",
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"requests",
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"messages",
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"attachments",
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"status_history",
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"audit_log",
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"otp_sessions",
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"quotes",
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"alembic_version",
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}
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tables = set(self.inspector.get_table_names())
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self.assertTrue(expected.issubset(tables), f"Missing tables: {expected - tables}")
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def test_alembic_version_is_set(self):
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with self.engine.connect() as conn:
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version = conn.execute(text("SELECT version_num FROM alembic_version")).scalar_one()
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self.assertEqual(version, "0001_init")
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