Update app.py

app.py

@@ -113,6 +113,7 @@ if uploaded_files:
 
                 prompt=f""" Your task is to generate unit test cases for this function : \n\n{snippet}\
                         \n\n Generate 5 to 10 unit test cases. Include couple of edge cases as well.
+                        \n\n All the test cases should have the mandatory assert statement.
                         \n\n Politely refuse if the function is not suitable for generating test cases.
                         \n\n There should be no duplicate test cases. 
                         \n\n Avoid generating repeated statements.