Method doc

test/testcmdlineparser.cpp:2191–2196

    }

    void doc() {
        REDIRECT;
        const char * const argv[] = {"cppcheck", "--doc"};
        ASSERT_EQUALS_ENUM(CmdLineParser::Result::Exit, parseFromArgs(argv));
        ASSERT(startsWith(logger->str(), "## "));
    }

    void docExclusive() {
        REDIRECT;