er-Qunit.
Test helpers provide us with some conveniences, such the subject function that handles lookup and instantiation for our object under test.
Note that in a unit test you can customize the initialization of your object under test by passing to the
subject function an object containing the instance variables you would like to initialize.  For example, to initialize
the property 'foo' in our object under test, we would call <code>this.subject({ foo: 'bar' });</code></p>
</section>
<h3 id="toc_testing-o