There are many advantages for unit testing Silverlight with Typemock Isolator. These include shortening the development cycle, reducing the development costs, increasing code coverage, releasing a product with less bugs, providing good documentation and more...
Microsoft Silverlight runs with its own version of .Net runtime. Up until now, it was not possible to isolate Silverlight code in tests. But now, thanks to SilverUnit, built on top of Typemock Isolator, it is possible to test Silverlight with ease.
Unit Testing Silverlight Code Sample VB.NET
Below you can see a unit testing Silverlight code sample. This test sets dependency properties and checks what happens when an Invalid value is set on them. The next one uses two controls with each other.