[WIP] Test Suite

[thestr4ng3r]

Fix #1263

[thestr4ng3r]

A suggestion since you are currently working on it: I think now it would be better to put tests in /test instead of /src/test to clearly separate them from the actual source.

[karliss]

Is LD_LIBRARY_PATH still necessary? At least in my local build CMake was setting RPATH correctly that build output is runable without modifying LD_LIBRARY_PATH.

[karliss]

I have mixed feelings about the way AutoTest.h handles multiple test classes. On one hand I am not too happy about idea of an executable per test files, on the other it breaks QtCreator integration and some of the Qt Test framework functionality. Haven't checked how it affects Visual Studio and KDevelop integration.

Since DECLARE_TEST it is still necessary having everything in single executable doesn't save any work when creating a new test. Running all the executables can be handled using CMake.

Biggest potential downside of multiple test executables is the performance impact of running a bunch of executables. Since it is one executable per test class not test function it shouldn't be as bad as what happens when using gtest_add_tests functionality for CTest and GTest integration. So this might not be too much of a problem.