enhance the prompt for unit testing

week4/community-contributions/unit-tests-generator.ipynb

@@ -198,12 +198,28 @@
    "source": [
     "def get_user_prompt(code):\n",
     "\n",
-    "    user_prompt = \"Write for a python code the unit test cases.\"\n",
+    "    user_prompt = \"\"\"Test include:\n",
-    "    user_prompt += \"Return readable unit tests cases using pytest library, do not create any custom imports, don't forget to import errors if needed; do not explain your work other than a few comments.\"\n",
-    "    user_prompt += \"The tests should include normal inputs, the inputs where the code is expected to fail, edge case and error handling.\"\n",
-    "    user_prompt += \"Do not insert the function to be tested in the output before the tests.\"\n",
-    "    \n",
     "\n",
+    "    - Valid inputs with expected results.\n",
+    "    - Inputs that test the boundaries or limits of the function's behavior.\n",
+    "    - Invalid inputs or scenarios where the function is expected to raise exceptions.\n",
+    "\n",
+    "    Structure:\n",
+    "\n",
+    "    - Begin with all necessary imports. \n",
+    "    - Do not create custom imports. \n",
+    "    - Do not insert in the response the function for the tests.\n",
+    "    - Ensure proper error handling for tests that expect exceptions.\n",
+    "    - Clearly name the test functions to indicate their purpose (e.g., test_function_name).\n",
+    "\n",
+    "    Example Structure:\n",
+    "\n",
+    "    - Use pytest.raises to validate exceptions.\n",
+    "    - Use assertions to verify correct outputs for successful and edge cases.\n",
+    "\n",
+    "    Documentation:\n",
+    "\n",
+    "    - Add docstrings explaining what each test verifies.\"\"\"\n",
     "    user_prompt += code\n",
     "\n",
     "    return user_prompt"
@@ -298,6 +314,8 @@
    "source": [
     "function_to_test = \"\"\"\n",
     "    def lengthOfLongestSubstring(s):\n",
+    "        if not isinstance(s, str):\n",
+    "            raise TypeError(\"Input must be a string\")\n",
     "        max_length = 0\n",
     "        substring = \"\"\n",
     "        start_idx = 0\n",
@@ -343,7 +361,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -398,16 +416,10 @@
     "    save_test_run.click(save_unit_tests, inputs=[unit_tests_out])\n",
     "\n",
     "\n",
-    "ui.launch(inbrowser=True)"
+    "ui.launch(inbrowser=True)\n",
+    "# ui.launch()"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
   {
    "cell_type": "code",
    "execution_count": null,