moduleForModel leaking state between tests

[pwfisher]

this.subject() is not giving me a fresh object for each test.

http://jsbin.com/wafigo/edit?js,output

[rwjblue]

You are sharing a mutable object ('[]') on the model prototype, as you have it in the JSBin this is shared across all instances.

You need something like:

init: function() {
  this._super.apply(this, arguments);
  this.messages = [];
}

[pwfisher]

Another pair of eyes made it a shallow bug. Thanks!

messages: () => { return []; }.property(),