Yes, it is. The test below checks the following situation:
When we call `getDuration` method for the `videoId` that doesn't available for the current video

A simple version of the logic that is used under the hood:
```javascript
var getDuration = function () {
  var videoId = state.videos[state.speed];
  return state.metadata[videoId].duration;
}
```
That's why I defined video `speed`, but not a `videoId`.
Perhaps I need to note that this is a fallback in the message.