Github CI with Postgres (#417)

* with postgres

* postgres test explicit

* make format

* start postgres only if needed

* remove if again

* print db

* db in matrix

* delete schema

* use new env var MINT_TEST_DATABASE for tests

* add db path to regtest

tests/conftest.py

@@ -35,7 +35,7 @@ settings.mint_lightning_backend = settings.mint_lightning_backend or "FakeWallet
 settings.fakewallet_brr = True
 settings.fakewallet_delay_payment = False
 settings.fakewallet_stochastic_invoice = False
-settings.mint_database = "./test_data/test_mint"
+settings.mint_database = settings.mint_test_database
 settings.mint_derivation_path = "m/0'/0'/0'"
 settings.mint_derivation_path_list = []
 settings.mint_private_key = "TEST_PRIVATE_KEY"
@@ -100,6 +100,13 @@ async def ledger():
         db_file = os.path.join(settings.mint_database, "mint.sqlite3")
         if os.path.exists(db_file):
             os.remove(db_file)
+    else:
+        # clear postgres database
+        db = Database("mint", settings.mint_database)
+        async with db.connect() as conn:
+            await conn.execute("DROP SCHEMA public CASCADE;")
+            await conn.execute("CREATE SCHEMA public;")
+
     wallets_module = importlib.import_module("cashu.lightning")
     lightning_backend = getattr(wallets_module, settings.mint_lightning_backend)()
     backends = {