test-runner

Automatically run relevant tests after code changes. Detects test files and runs appropriate test commands based on file extensions and project structure.

Automations
Testing
472

What it does and how to use it

A hook that automates testing actions at key moments (before/after a tool runs, on save, etc.), without you having to think about it.

Install the hook (command above).
It runs automatically on the defined events.
Adjust the rules in the settings file if you want to fine-tune it.

Install (Claude Code)

mkdir -p .claude/hooks && curl -fsSL https://doutorai.pt/data/lib/hooks__test-runner.md -o .claude/hooks/test-runner.json

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

{
  "description": "Automatically run relevant tests after code changes. Detects test files and runs appropriate test commands based on file extensions and project structure.",
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Edit",
        "hooks": [
          {
            "type": "command",
            "command": "if [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.js || \"$CLAUDE_TOOL_FILE_PATH\" == *.ts ]] && [[ -f package.json ]]; then npm test 2>/dev/null || yarn test 2>/dev/null || true; elif [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.py ]] && [[ -f pytest.ini || -f setup.cfg || -f pyproject.to

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