Time out for test cases in googletest

Question

Is there a way in gtest to have a timeout for inline/test cases or even tests. For example I would like to do something like: EXPECT_TIMEOUT(5 seconds, myFunction

Answer 1

I just came across this situation.

I wanted to add a failing test for my reactor. The reactor never finishes. (it has to fail first). But I don't want the test to run forever.

I followed your link but still not joy there. So I decided to use some of the C++14 features and it makes it relatively simple.

But I implemented the timeout like this:

TEST(Init, run)
{
    // Step 1 Set up my code to run.
    ThorsAnvil::Async::Reactor                      reactor;
    std::unique_ptr     handler(new TestHandler("test/data/input"));
    ThorsAnvil::Async::HandlerId                    id = reactor.registerHandler(std::move(handler));

    // Step 2
    // Run the code async.
    auto asyncFuture = std::async(
        std::launch::async, [&reactor]() {
                               reactor.run();   // The TestHandler
                                                // should call reactor.shutDown()
                                                // when it is finished.
                                                // if it does not then 
                                                // the test failed.
                            });

    // Step 3
    // DO your timeout test.
    EXPECT_TRUE(asyncFuture.wait_for(std::chrono::milliseconds(5000)) != std::future_status::timeout);

    // Step 4
    // Clean up your resources.
    reactor.shutDown();             // this will allow run() to exit.
                                    // and the thread to die.
}

Now that I have my failing test I can write the code that fixes the test.