The `goog.testing.TestQueue` Class

`goog.testing.TestQueue()`

Generic queue for writing unit tests

`.dequeue(opt_comment)`

Gets the next event from the queue. Throws an exception if the queue is empty.

opt_comment {string=}: Comment if the queue is empty.
returns {Object}: The next event from the queue.

`.enqueue(event)`

Adds a new event onto the queue.

event {Object}: The event to queue.

`.isEmpty()`

Returns whether the queue is empty.

returns {boolean}: Whether the queue is empty.