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bin/finance/tests/test_migration_pg.py
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Python

"""Postgres-only: Alembic-Revision e7f1a9c3b214 (Ausbaustufe 14) hoch/runter
auf einer Wegwerf-DB (Name muss auf '_test' enden). Beispiel:
podman run -d --rm --name a14-pg -e POSTGRES_PASSWORD=wegwerf \
-e POSTGRES_DB=fb_test -p 127.0.0.1:55432:5432 docker.io/library/postgres:17.10
FB_TEST_PG_URL=postgresql+psycopg://postgres:wegwerf@127.0.0.1:55432/fb_test \
.venv/bin/python -m pytest -q tests/test_migration_pg.py
"""
import os
from pathlib import Path
import pytest
from alembic import command
from alembic.config import Config
from sqlalchemy import create_engine, inspect, text
from sqlalchemy.engine import make_url
PG_URL = os.environ.get("FB_TEST_PG_URL")
pytestmark = pytest.mark.skipif(not PG_URL, reason="FB_TEST_PG_URL nicht gesetzt")
ROOT = Path(__file__).resolve().parent.parent
@pytest.fixture
def alembic_cfg(monkeypatch):
assert make_url(PG_URL).database.endswith("_test"), "nur Wegwerf-DB *_test!"
monkeypatch.setenv("FB_DATABASE_URL", PG_URL)
from app.config import get_settings
get_settings.cache_clear()
engine = create_engine(PG_URL)
with engine.begin() as conn:
conn.execute(text("DROP SCHEMA public CASCADE; CREATE SCHEMA public"))
cfg = Config(str(ROOT / "alembic.ini"))
cfg.set_main_option("script_location", str(ROOT / "alembic"))
yield cfg, engine
# Schema leeren, damit test_views_pg.py (create_all) nicht auf dem
# herabgestuften Alembic-Stand aufsetzt.
with engine.begin() as conn:
conn.execute(text("DROP SCHEMA public CASCADE; CREATE SCHEMA public"))
engine.dispose()
get_settings.cache_clear()
def test_migration_a14_up_down(alembic_cfg):
cfg, engine = alembic_cfg
command.upgrade(cfg, "d5e8b3c7a410")
with engine.begin() as conn:
conn.execute(text("INSERT INTO scenarios (id, name, description, include_recurring, "
"include_planned) VALUES (1, 'S', '', true, true)"))
conn.execute(text(
"INSERT INTO scenario_modifiers (id, scenario_id, target_type, target_id, kind, "
"value, end_date) VALUES "
"(1, 1, 'recurring', 7, 'ende', 0, '2030-10-15'), "
"(2, 1, 'category', 3, 'percent', 10, NULL)"))
command.upgrade(cfg, "head")
with engine.begin() as conn:
rows = conn.execute(text("SELECT id, kind, value, start_date, end_date "
"FROM scenario_modifiers ORDER BY id")).all()
assert [(r.id, r.kind, str(r.value), r.start_date, str(r.end_date))
for r in rows] == [(1, "ende", "0.00", None, "2030-10-15"),
(2, "percent", "10.00", None, "None")]
conn.execute(text(
"INSERT INTO scenario_modifiers (id, scenario_id, target_type, target_id, kind, "
"value, start_date, end_date) VALUES "
"(3, 1, 'recurring', 7, 'set', -80, '2030-11-01', NULL), "
"(4, 1, 'recurring', 7, 'percent', 50, '2030-11-01', '2030-12-31')"))
conn.execute(text(
"INSERT INTO scenario_recurring_items (scenario_id, name, amount, rhythm, due_day) "
"VALUES (1, 'W', -10, 'monthly', 14)"))
insp = inspect(engine)
assert "scenario_recurring_items" in insp.get_table_names()
assert "category_id" in {c["name"] for c in insp.get_columns("scenario_planned_items")}
command.downgrade(cfg, "d5e8b3c7a410")
with engine.begin() as conn:
rows = conn.execute(text("SELECT id, kind, end_date FROM scenario_modifiers "
"ORDER BY id")).all()
assert [(r.id, r.kind, str(r.end_date)) for r in rows] == [
(1, "ende", "2030-10-15"), (2, "percent", "None"), (4, "percent", "None")]
insp = inspect(engine)
assert "scenario_recurring_items" not in insp.get_table_names()
assert "start_date" not in {c["name"] for c in insp.get_columns("scenario_modifiers")}