Class-based SmallLint tests are executed per method

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Class-based SmallLint tests (and potentially other tests, but their behavior has not been examined yet) seem to be executed exactly as often per class as the amount of methods in the class dictates. That also means a test ist never executed if there are no methods in a class.

This suggests that the current implementation just delegates calls arriving at checkMethod to checkClass, which would yield exactly this behavior.

Obviously, this cannot be intended and should thus be fixed.