[CMake] Need advice for unit test structure

[Bill Hoffman]

Philip Lowman wrote:

> 
> I don't have an example of this, but it might be possible to have your 
> test run a script which configures and builds a small CMake test project 
> which compiles against your current code.  This test project would of 
> course fail to compile by design.  Then you could monitor for this 
> failure and expect it?
> 

ctest --build-and-test can be used to build a test that is not part of 
the main solution.  It is what we use for testing in CMake itself. See 
the Test directory in the cmake source tree for an example.

-Bill