Added test for tortoise.run_async

tortoise/__init__.py

@@ -309,11 +309,11 @@ async def init(
     async def close_connections(cls):
         for connection in cls._connections.values():
             await connection.close()
+        cls._connections = {}
 
     @classmethod
     async def _reset_connections(cls):
         await cls.close_connections()
-        cls._connections = {}
 
         for app in cls.apps.values():
             for model in app.values():

tortoise/tests/test_run_async.py

@@ -0,0 +1,40 @@
+from unittest import TestCase
+
+from tortoise import Tortoise, run_async
+
+
+class TestRunAsync(TestCase):
+    def setUp(self):
+        self.somevalue = 1
+
+    async def init(self):
+        await Tortoise.init(
+            db_url='sqlite://:memory:',
+            modules={'models': []}
+        )
+        self.somevalue = 2
+        self.assertNotEqual(Tortoise._connections, {})
+
+    async def init_raise(self):
+        await Tortoise.init(
+            db_url='sqlite://:memory:',
+            modules={'models': []}
+        )
+        self.somevalue = 3
+        self.assertNotEqual(Tortoise._connections, {})
+        raise Exception('Some exception')
+
+    def test_run_async(self):
+        self.assertEqual(Tortoise._connections, {})
+        self.assertEqual(self.somevalue, 1)
+        run_async(self.init())
+        self.assertEqual(Tortoise._connections, {})
+        self.assertEqual(self.somevalue, 2)
+
+    def test_run_async_raised(self):
+        self.assertEqual(Tortoise._connections, {})
+        self.assertEqual(self.somevalue, 1)
+        with self.assertRaises(Exception):
+            run_async(self.init_raise())
+        self.assertEqual(Tortoise._connections, {})
+        self.assertEqual(self.somevalue, 3)