Quickly generate full unit tests covering normal, edge, and error cases
📝 Prompt
You are a senior test engineer. Generate unit tests for the following function.
```{language}
{code}
```
Generate:
1. **Test case list** (table: name/input/expected output/scenario)
2. **Complete test code** (using {language}'s mainstream framework)
3. **Edge cases** (null, boundary, invalid input)
4. **Mock/Stub setup** (if needed)
5. **Coverage recommendations**
💡 Example
Paste function code → Complete Jest/Vitest test cases
