I use CxxTest¹ but there is also GoogleTest².

Neither of these suck nor are they tied to a single platform.

 

¹ http://cxxtest.tigris.org/

² http://code.google.com/p/googletest/

Those are great testing frameworks.

Isolator++ is a mocking framework that works with any xTesting framework, such as CxxTest or GoogleTest.

Why don't you download the free trial and tell what you think http://www.typemock.com/isolatorpp-product-page

The ideas here are interesting, but they are going to need much better documentation to prove to me they provide $600 worth of value. For now I will stick with Boost Test which is a simple to use cross platform C++ unit testing library, and it definitely doesn't suck: http://www.boost.org/doc/libs/release/libs/test/doc/html/ind...

EDIT: I found the better documentation: http://docs.typemock.com/Isolatorpp/Default.aspx##ippHelp.ch... They have a seemingly magic way of hooking already existing classes allowing you to mock out methods without manual subclassing.

Absolutely. Feel free as well to try it out and blog your thoughts or some tips on how to get started http://www.typemock.com/isolatorpp-product-page

I haven't done any C++ in quite some time. Unit Tests would be a must-have at this point.

Anyone used this and can report how well it works?

I can't report on this, but assuming you need a unit test package for C++ I can tell you that UnitTest++[1] was very easy to pick up for me (after not having done any C++ for 10+ years).

[1] http://unittest-cpp.sourceforge.net/

Feel free to download it and try it out http://www.typemock.com/isolatorpp-product-page