fix: terminate method idempotent

Author: kalombos

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.3'
-
 services:
   postgres:
     image: postgres

peewee_async.py

@@ -278,8 +278,9 @@ async def create(self):
     async def terminate(self):
         """Terminate all pool connections.
         """
-        self.pool.terminate()
-        await self.pool.wait_closed()
+        if self.pool is not None:
+            self.pool.terminate()
+            await self.pool.wait_closed()
 
 
 ############

tests/conftest.py

@@ -70,7 +70,6 @@ async def db(request):
 )
 
 # MANAGERS fixtures will be removed in v1.0.0
-# TODO add manager prefix to fixtures
 postgres_only = pytest.mark.parametrize(
     "manager", PG_DBS, indirect=["manager"]
 )

tests/test_database.py

@@ -42,3 +42,14 @@ async def test_is_connected(db):
 
     await db.aio_close()
     assert db.is_connected is False
+
+
+@dbs_all
+async def test_aio_close_idempotent(db):
+    assert db.is_connected is False
+
+    await db.aio_close()
+    assert db.is_connected is False
+
+    await db.aio_close()
+    assert db.is_connected is False