fix: reset destroys app (#319)

Co-authored-by: cachho <admin@ch-webdev.com>

tests/embedchain/test_embedchain.py

@@ -37,3 +37,25 @@ class TestChromaDbHostsLoglevel(unittest.TestCase):
         app.chat("What text did I give you?")
 
         self.assertEqual(mock_ec_get_llm_model_answer.call_args[1]["documents"], [knowledge])
+
+    def test_add_after_reset(self):
+        """
+        Test if the `App` instance is correctly reconstructed after a reset.
+        """
+        app = App()
+        app.reset()
+
+        # Make sure the client is still healthy
+        app.db.client.heartbeat()
+        # Make sure the collection exists, and can be added to
+        app.collection.add(
+            embeddings=[[1.1, 2.3, 3.2], [4.5, 6.9, 4.4], [1.1, 2.3, 3.2]],
+            metadatas=[
+                {"chapter": "3", "verse": "16"},
+                {"chapter": "3", "verse": "5"},
+                {"chapter": "29", "verse": "11"},
+            ],
+            ids=["id1", "id2", "id3"],
+        )
+
+        app.reset()