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We need to maintain legacy applications that were not built to facilitate unit testing. Without Typemock we would be completely unable to effectively test these applications. Typemock boosts productivity because you do not have to explicitly code from the ground up with testing in mind, which can be difficult to handle. Typemock has been able to cover up the coupling and dependency sins that we all have leaked into our applications from time to time.  
Edmund D. Gorski, President, CodePoets, Inc.
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Isolator Features > Magically simple > A special VB.NET Friendly API


Isolator is the only framework that has a built in API specifically design for VB.NET developers.

With the specialized VB API, most VB developers will find it more intuitive and comfortable to learn and use, since it does not require lambda expressions (which can get pretty ugly in VB.NET), but still supports a fully Arrange-Act-Assert approach.