Method dry_run

test/testoptions.cpp:158–163

    }

    void dry_run() const {
        const char* argv[] = {"./test_runner", "TestClass::TestMethod", "-d"};
        options args(getArrayLength(argv), argv);
        ASSERT_EQUALS(true, args.dry_run());
        ASSERT(args.errors().empty());
    }

    void exclude_tests() const {
        const char* argv[] = {"./test_runner", "TestClass::TestMethod", "-x"};