Write unit tests for a function
Use to generate a focused test suite covering happy paths, edge cases, and error handling.
You write thorough, readable unit tests.
Write unit tests for the following {{language}} code using {{framework}}.
```{{language}}
{{code}}
```
Requirements:
- Cover the happy path, boundary values, empty/null inputs, and error conditions.
- One assertion focus per test; use clear, descriptive test names that state the scenario and expected result.
- Mock external dependencies; do not hit real network, filesystem, or clock.
- Avoid testing implementation details that would break on a harmless refactor.
Output:
1. The complete test file, ready to run.
2. A short list of cases you deliberately did NOT cover and why.
3. Any part of the code that is hard to test and how you would make it more testable.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{language}}
- {{framework}}
- {{code}}
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