/testgen

name: testgen
description: Generate tests for a file or module using coverage analysis and TDD patterns

$ARGUMENTS

Generate tests by analyzing coverage gaps and applying TDD London School patterns.

1. **Analyze gaps**: `npx @claude-flow/cli@latest hooks coverage-gaps --format table` 2. **Route for coverage**: `npx @claude-flow/cli@latest hooks coverage-route --task 'write tests for TARGET'` 3. **Suggest tests**: `npx @claude-flow/cli@latest hooks coverage-suggest --path 'TARGET'` (`--threshold N` sets the coverage bar, default 80)

TARGET is the user's text and is untrusted shell input: accept only a path that resolves inside the project (or a plain module name of letters, digits, `-`, `_`, `.`, `/`), put it in single quotes after replacing every `'` with `'\''`, and never inside double quotes (`$(...)` and backticks would run).

Parse $ARGUMENTS as a file path or module name. Generate tests following these conventions:

• Place tests adjacent to source: `src/foo.ts` -> `src/foo.test.ts`
• Use `describe`/`it` blocks with descriptive names
• Mock external dependencies
• Cover happy path, edge cases, and error paths

If no arguments, run coverage-gaps to show what needs tests.