Fix test extraction in FileReaderDecorator.
Fix test extraction in FileReaderDecorator.

renatahodovan/fuzzinator,renatahodovan/fuzzinator,renatahodovan/fuzzinator,akosthekiss/fuzzinator,akosthekiss/fuzzinator,renatahodovan/fuzzinator,akosthekiss/fuzzinator,akosthekiss/fuzzinator