It doesn't work without it, it fails with:

```
>> Message: Died on test #1     at http://localhost:9997/bower_components/qunit/qunit/qunit.js:131
>>     at http://localhost:9997/tmp/tests.js:7283
>>     at http://localhost:9997/tmp/tests.js:7285: The backend rejected the commit because it was invalid: {name: is invalid}
```

The test I copied was added by @kingpin2k in https://github.com/emberjs/data/commit/c22ee7ca