Bring test coverage close to 100%

[Mi-La]

We should be able to get almost 100% coverage by running all our tests (language, errors, warnings, arguments, ...). To measure it, we should either run coverage tests automatically via ant (JacoCo Ant Task) or we can create a Java application which will be able to run all our tests with selected generator (or all generators) and check coverage manually in Eclipse with EclEmman plugin.

[Mi-La]

It can also help with dead code detection.