# Usage examples

## Wildcards
In this example, `grunt qunit:all` (or `grunt qunit` because `qunit` is a [multi task][]) will test all `.html` files in the test directory _and all subdirectories_. First, the wildcard is expanded to match each individual file. Then, each matched filename is passed to [PhantomJS][] (one at a time).

```js
// Project configuration.
grunt.initConfig({
  qunit: {
    all: ['test/**/*.html']
  }
});
```

## Testing via http:// or https://
In circumstances where running unit tests from local files is inadequate, you can specify `http://` or `https://` URLs via the `urls` option. Each URL is passed to [PhantomJS][] (one at a time).

In this example, `grunt qunit` will test two files, served from the server running at `localhost:8000`.

```js
// Project configuration.
grunt.initConfig({
  qunit: {
    all: {
      options: {
        urls: [
          'http://localhost:8000/test/foo.html',
          'http://localhost:8000/test/bar.html'
        ]
      }
    }
  }
});
```

Wildcards and URLs may be combined by specifying both.

## Using the grunt-contrib-connect plugin
It's important to note that grunt does not automatically start a `localhost` web server. That being said, the [grunt-contrib-connect plugin][] `connect` task can be run before the `qunit` task to serve files via a simple [connect][] web server.

[grunt-contrib-connect plugin]: https://github.com/gruntjs/grunt-contrib-connect
[connect]: http://www.senchalabs.org/connect/

In the following example, if a web server isn't running at `localhost:8000`, running `grunt qunit` with the following configuration will fail because the `qunit` task won't be able to load the specified URLs. However, running `grunt connect qunit` will first start a static [connect][] web server at `localhost:8000` with its base path set to the Gruntfile's directory. Then, the `qunit` task will be run, requesting the specified URLs.

```js
// Project configuration.
grunt.initConfig({
  qunit: {
    all: {
      options: {
        urls: [
          'http://localhost:8000/test/foo.html',
          'http://localhost:8000/test/bar.html',
        ],
      },
    },
  },
  connect: {
    server: {
      options: {
        port: 8000,
        base: '.',
      },
    },
  },
});

// This plugin provides the "connect" task.
grunt.loadNpmTasks('grunt-contrib-connect');

// A convenient task alias.
grunt.registerTask('test', ['connect', 'qunit']);
```

## Custom timeouts and PhantomJS options
In the following example, the default timeout value of `5000` is overridden with the value `10000` (timeout values are in milliseconds). Additionally, PhantomJS will read stored cookies from the specified file. See the [PhantomJS API Reference][] for a list of `--` options that PhantomJS supports.

[PhantomJS API Reference]: https://github.com/ariya/phantomjs/wiki/API-Reference

```js
// Project configuration.
grunt.initConfig({
  qunit: {
    options: {
      timeout: 10000,
      '--cookies-file': 'misc/cookies.txt'
    },
    all: ['test/**/*.html']
  }
});
```

## Events and reporting
[QUnit callback](http://api.qunitjs.com/category/callbacks/) methods and arguments are also emitted through grunt's event system so that you may build custom reporting tools. Please refer to to the QUnit documentation for more information.

The events (with arguments) are as follows:

* `qunit.begin`
* `qunit.moduleStart`: name
* `qunit.testStart`: name
* `qunit.log`: result, actual, expected, message, source
* `qunit.testDone`: name, failed, passed, total
* `qunit.moduleDone`: name, failed, passed, total
* `qunit.done`: failed, passed, total, runtime

In addition to QUnit callback-named events, the following event is emitted when [PhantomJS][] is spawned for a test:

* `qunit.spawn`: url

You may listen for these events like so:

```js
grunt.event.on('qunit.spawn', function (url) {
  grunt.log.ok("Running test: " + url);
});
```
