Ember 2.10.0 - Calling this.$() in willDestroyElement hooks during unit tests returns undefined

[omarestrella]

After upgrading to Ember 2.10.0, our component unit tests started breaking when willDestroyElement runs because this.$() is now returning undefined. This was not happening in Ember 2.9.0.

You can see this happening in this ember-twiddle.

[pixelhandler]

This looks like a bug, we should be able to use this.$() in willDestroyElement, especially to remove event listeners.

[kamilogorek]

Bug flow:

1. Renderer calls remove method which contains _transitionTo('destroying') function call link
2. _transitionTo change currentState to destroying link
3. _states lookup ends up finding destroying state link
4. which is created using default state link1 link2
5. which on the other hand returns undefined for $() calls link

[chancancode]

@omarestrella @kamilogorek this is fixed in 2.10.2, thanks for reporting!