是否可以将数据传递到c ++ Google测试框架中的TestEventListener中？

Question

I am using my own printer class in the google test framework to get some custom printing, as shown below:

class bsgtDefaultPrinter : public ::testing::EmptyTestEventListener {
    // Called before a test starts.
    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
      printf("*** Starting test %s.%s\n", test_info.test_case_name(), test_info.name());
    }

    // Called after a failed assertion or a SUCCEED() invocation.
    virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result) {
        std::string msg = test_part_result.summary();
        char c = '|';
        msg = StripNewlines(msg,&c); // replace newlowith bar so result is all on same line
        printf("   %s%s\n",test_part_result.failed() ? "*** " : "",msg.c_str());
    }

    // Called after a test ends.
    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
        if (test_info.result()->Failed())
            printf("*** FAIL: ");
        else
            printf("*** PASS: ");
        printf("test %s.%s\n\n", test_info.test_case_name(), test_info.name());
    }
};

In my main() I am installing this printer as follows:

::testing::TestEventListeners& listeners = ::testing::UnitTest::GetInstance()->listeners();
delete listeners.Release(listeners.default_result_printer());
listeners.Append(new bsgtDefaultPrinter);
RUN_ALL_TESTS();

Is it possible to pass user data into the virtual method OnTestEnd of the custom printer? I want to report some extra data that was gathered.

Answer 1

I don't think you can do that without changing Google Test sources.

You would need to subclass TestInfo in order to append your custom data to the object, but you have no control over the instantiation of the actual parameter passed by to TestEventListener::OnTestEnd . The only way to control this instantiation is to modify Google Test source code so the data you want to gather is available at the point of calling OnTestEnd .