Adding some more tests

tests/main.cpp

@@ -3,10 +3,12 @@
 
 int RunParserTests(int argc, char **argv);
 int RunDecoderTests(int argc, char **argv);
+int RunCoverageTests(int argc, char **argv);
 
 int main(int argc, char **argv) {
     QCoreApplication application(argc, argv);
     const int parserResult = RunParserTests(argc, argv);
     const int decoderResult = RunDecoderTests(argc, argv);
-    return parserResult | decoderResult;
+    const int coverageResult = RunCoverageTests(argc, argv);
+    return parserResult | decoderResult | coverageResult;
 }