Class CapturedHelp

tests/HelpTest.cpp:1095–1106

}

struct CapturedHelp {
    CLI::App app{"My Test Program"};
    std::stringstream out{};
    std::stringstream err{};

    int run(const CLI::Error &e) { return app.exit(e, out, err); }

    void reset() {
        out.clear();
        err.clear();
    }
};

TEST_CASE_METHOD(CapturedHelp, "Successful", "[help]") {
    CHECK(0 == run(CLI::Success()));