fix: seed app_settings.currency от AURUM_DEFAULT_CURRENCY на чистой установке

backend/tests/test_app_settings_seed.py

@@ -0,0 +1,45 @@
+"""Regression coverage for seed_default_app_settings() respecting
+AURUM_DEFAULT_CURRENCY. An earlier version of the 9f3a2d7c5e11 migration
+hardcoded the singleton app_settings row to currency='USD' at migration
+time — since this function only creates the row when it's missing, that
+pre-existing row silently defeated a non-USD AURUM_DEFAULT_CURRENCY on a
+fresh install. The migration no longer inserts the row at all; this
+function is now the sole place it gets created.
+"""
+from sqlalchemy import delete
+
+from app.core.config import get_settings
+from app.db.seed import seed_default_app_settings
+from app.models.settings import AppSettings
+
+
+async def test_seed_creates_the_row_with_the_configured_currency(test_sessionmaker, monkeypatch):
+    monkeypatch.setattr(get_settings(), "default_currency", "GBP")
+
+    async with test_sessionmaker() as session:
+        await session.execute(delete(AppSettings))
+        await session.commit()
+
+        await seed_default_app_settings(session)
+
+        settings_row = await session.get(AppSettings, 1)
+        assert settings_row is not None
+        assert settings_row.currency == "GBP"
+
+
+async def test_seed_never_overwrites_an_existing_row(test_sessionmaker, monkeypatch):
+    """Self-healing only kicks in when the row is missing — an existing
+    row's currency (e.g. one the user changed via Settings after install)
+    must never be silently reset just because the app restarted."""
+    async with test_sessionmaker() as session:
+        existing = await session.get(AppSettings, 1)
+        existing.currency = "EUR"
+        await session.commit()
+
+    monkeypatch.setattr(get_settings(), "default_currency", "GBP")
+
+    async with test_sessionmaker() as session:
+        await seed_default_app_settings(session)
+
+        settings_row = await session.get(AppSettings, 1)
+        assert settings_row.currency == "EUR"