Testing should be completed during each phase of a site's development. Two mistakes new designers often make are waiting until just prior to launch before testing, or not testing at all.
If you've been following along through the book, you'll have done some testing after each page is created by clicking on the Preview link. By testing as we go along, we reduce the number of bugs and errors that could appear if left until just before the launch. The message is, keep testing and previewing throughout the entire Muse project.
So what do we need to test for?
Even though your website looks good and works well in Muse, doesn't mean it will look as good or function as well on other browsers and/or platforms. Adobe has created a product that should create web pages that look good on all browsers and platforms but it is part of your job to check and test that they do.
In Chapter 2, The Muse Workflow...