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Test Suite Generator

Both tools can read the source file and generate matching tests. Claude Code can also run the tests immediately and iterate on failures. Cursor previews the test file for review before saving.

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Prompt
Generate a comprehensive test suite for {{file_or_module_path}}.

Testing framework: {{test_framework}}
Current test coverage: {{current_coverage}} (or "none")

Requirements:
1. **Unit tests** for every exported function/method:
   - Happy path with realistic data
   - Edge cases: empty inputs, nulls, boundary values, maximum sizes
   - Error cases: invalid inputs, network failures, timeout scenarios
2. **Integration tests** for interactions between components:
   - Mock external dependencies ({{external_deps}})
   - Test the actual integration between internal modules
3. **Test organization**:
   - Group with describe blocks by function/feature
   - Each test name should read as a sentence: "should return empty array when no items match filter"
   - Setup/teardown in beforeEach/afterEach — no test interdependencies

Additional:
- Use {{assertion_style}} assertion style
- Generate test fixtures as constants at the top of the file, not inline
- Add a comment "// Edge case" before non-obvious test scenarios
- Aim for >90% branch coverage

Do NOT test implementation details — test behavior and outputs.

Variables to customize

{{file_or_module_path}}{{test_framework}}{{current_coverage}}{{external_deps}}{{assertion_style}}

Why this prompt works

Both tools can read the source file and generate matching tests. Claude Code can also run the tests immediately and iterate on failures. Cursor previews the test file for review before saving.

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