Develop a reliable testing setup

[walkero-gr]

We have a few test scripts in the repository, but a lot of them are not compilable or crash.
We need to fix them to compile and run successfully. This will help in easily testing major changes.

We need to

• make all the current tests compile without issues
• add more info in the tests which parts of the library it tests
• make them run successfully

If any of the tests require further adjustments in clib4, we need to create new issues for each failing test.

[afxgroup]

Which errors you have compiling tests? However that tests are just there to see if new functions are implemented correctly or not. No exe is returning something like FAIL or OK if the test is expected to work because it is not a test suite.
If you want a test suite you should see how google tests works and implement something like that solution. Also modern C libs doesn't seems to have a complete test suite but only tests for bugs

[afxgroup]

I've fixed all test programs problem now make just "works"