Qunit not finishing on Mac OS X

[spruce]

Hi,
I'm using ember-cli for my project. There we got some tests. For testing the existens of models we use for example:

import {test, moduleForModel} from 'ember-qunit';

moduleForModel('user', 'User', {
  // Specify the other units that are required for this test.
  needs: ['model:session', 'model:otherOne', 'model:billing']
});

test('it exists', function() {
  var model = this.subject();
  // var store = this.store();
  ok(model);
});

then it runs all tests but stops at the last test and doesn't show the stats.
when I change the needs line to:

...
needs: ['model:session', 'model:otherOne']//, 'model:billing']
...

then naturally the test fails. with this output

not ok 98 PhantomJS 1.9 - User: it exists
    ---
        actual: >
            null
        message: >
            Died on test #1     at http://localhost:7357/assets/test-support.js:418
                at test (http://localhost:7357/assets/test-support.js:284)
                at :18
                at http://localhost:7357/assets/vendor.js:77
                at http://localhost:7357/assets/test-loader.js:14: No model was found for 'billing'
        Log: >
    ...

And it also prints the stats correctly like this:

1..101
# tests 101
# pass  100
# fail  1

What am I doing wrong?

Seems to me that the helper doesn't get killed correctly.
btw: in the browser everything works great.

I come from qunitjs/qunit#683

[rwjblue]

You cannot pass a model into an assertion directly.

See ember-cli/ember-cli#1970 (comment) for details.

[rwjblue]

The internal blueprints were updated in ember-cli/ember-cli#1996 to avoid generating tests that hang like this. You might be able to use the same technique.