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tape-watch

★ 53 Open GitHub ↗

Rerun tape tests when files change

// repository documentation

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# tape-watch

> Rerun tape tests when files change

tape-watch is an auto-test runner for [tape]. It will re-run your tests when any of the files in your project changes. This is better than using [watch][] or [nodemon][]: it will reload your tests in the same Node.js process, saving you precious startup time.

[![Status](https://travis-ci.org/rstacruz/tape-watch.svg?branch=master)](https://travis-ci.org/rstacruz/tape-watch "See test builds")

[nodemon]: https://www.npmjs.com/package/nodemon
[watch]: https://www.npmjs.com/package/watch

## Usage

Can happily live in your project (`--save-dev`) or globally (`-g`). I prefer global, since it's compatible with every project with [tape][] in it.

```
npm install -g tape-watch
```

[tape]: https://github.com/substack/tape

## Reference

```
Usage:
  $ tape-watch <files> [options] -- [options for the test]

Options:
  -p, --pipe PACKAGE        pipe to this package
  -o, --out CMD             output to this file/cmd
  -R, --refresh PACKAGE     ensure this PACKAGE gets refreshed
  -r, --require PACKAGE     require a PACKAGE before startup
  -1, --once                only run once
  -w, --watch               cancel out --once
  -c, --clear               clear console between test runs

Other options:
  -h, --help                show usage information
  -v, --version             print version info and exit
```
Examples:

```sh
tape-watch test/index.js
tape-watch test/index.js -p tap-spec
tape-watch test/index.js -o '| tap-spec --color'

# ensure require('jquery') and require('react') always gets reevaluated
tape-watch test/index.js -r jquery -r react

# run all test files in test/
tape-watch 'test/**/*.js'
```

## Using with Babel

Use the `-r` *(--require)* flag with [babel-register](https://www.npmjs.com/package/babel-register).

```sh
tape-watch -r babel-register
```

Before you do this, of course, you'll need to install the requisite modules first.

```sh
npm install --save-dev babel-register babel-preset-es2015
```

```js
/* package.json */
  "babel": {
    "presets": ["es2015"]
  }
```

## Adding `npm test`

Add this to your `package.json`:

```js
  "scripts": {
    "test": "tape-watch -1 test/*"
  }
```

You can now run tests with `npm test`, or make it auto-run with `npm test -- --watch`.

## Also see

- [tape-growl](https://www.npmjs.com/package/tape-growl) for notifications on macOS
- [tape-plus](https://www.npmjs.com/package/tape-plus) for grouping tape tests

## Thanks

> [ricostacruz.com](http://ricostacruz.com) &nbsp;&middot;&nbsp;
> GitHub [@rstacruz](https://github.com/rstacruz) &nbsp;&middot;&nbsp;
> Twitter [@rstacruz](https://twitter.com/rstacruz)

[MIT]: http://mit-license.org/
[contributors]: http://github.com/rstacruz/tape-watch/contributors

tape-watch

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