Debugged test cases of brainstorming

tests/test_api.py

@@ -48,13 +48,18 @@ def test_human_refining_ideation():
     assert response.status_code == 200
 
 def test_brainstorming():
-    response = client.post("/api/brainstorm", json={})
+    payload = {
+        "preferred_topics": [],
+        "image_base64_list": []
+    }
+    response = client.post("/api/brainstorm", json=payload)
     print(response.json())
     assert response.status_code == 200
 
 def test_brainstorming_with_topics():
     payload = {
-        "preferred_topics": ["fitness","community"]
+        "preferred_topics": ["fitness","community"],
+        "image_base64_list": []
     }
     response = client.post("/api/brainstorm", json=payload)
     print(response.json())