emberjs/ember.js — comment on commit 03b685fbbf728c07c6c91e404877073a7aad3ac9
File: packages/ember-views/tests/views/view/attribute_bindings_test.js line 17
By jbrown:

@wagenet Although I do usually see `destroy()` called on objects in `teardown`, I can't say I've really seen the variable set to `null` (in the ember tests).

Playing around in the console shows that setting it back to `undefined` would actually be the original state.

```javascript
var view;
// undefined
view = Ember.Object.create();
// Class
view.destroy();
// Class
// ...run loop...
view
// Class
view = undefined
// undefined
```

Is it a best practice to reset variables like that even though you're likely to reassign them in the next test?