---
name: test
description: Generate tests for the current code or a specific file
argument-hint: File path or test framework
---
# Test Generation

Target: $ARGUMENTS

Generate tests for the specified file or the current changes.

## Process

1. If a file path is given, `read_file` it. Otherwise use `bash` to get `git diff HEAD` and identify changed files.

2. Identify the test framework in use:
   - Python: pytest (preferred), unittest
   - JavaScript: vitest, jest, mocha
   - Check `package.json` or `requirements.txt` for hints

3. Read existing tests in the `tests/` or `__tests__/` directory to match style.

4. Generate tests that cover:
   - Happy path (typical usage)
   - Edge cases (empty input, boundary values)
   - Error cases (invalid input, network failures)
   - Integration points (if applicable)

5. Write the test file to the appropriate location using `write_file`.

6. Run the tests with `bash` to verify they pass.

## Rules

- One test file per source file (e.g. `src/auth.py` → `tests/test_auth.py`)
- Use descriptive test names: `test_user_can_login_with_valid_credentials`
- Arrange-Act-Assert pattern
- Don't test the framework — test your code's behavior
- Mock external dependencies (network, filesystem, time) when flaky