No events to be sent to Amplitude with amplitude SDK when running in a junit 5 test unit

Hi Denis, thanks for your reply. Yes, I run the exact same code in both the junit test and the main method.  No errors in both codes.

I guess it’s related with Amplitude Java SDK. The SDK uses a new Thread to send the events. It seems that the junit test main thread ends before the events are sent to Amplitude. So,  I have resolve the problem, the following codes can send the events to Amplitude now in a junit test:

    @Test
    void sendDataToAmplitude_with_callback() throws Exception{
        Amplitude client = Amplitude.getInstance();
        client.init("apiKeyXXXXXX");
        Event e = new Event("TestEvent","TestUser");

        var countDownLatch = new CountDownLatch(1);
        AmplitudeCallbacks callbacks =new AmplitudeCallbacks(){
            @Override
            public void onLogEventServerResponse(Event event, int status, String message) {
                countDownLatch.countDown();
            }
        };
        client.logEvent(e, callbacks);
        client.flushEvents();
        countDownLatch.await();
        client.shutdown();
    }

We need to wait for the response.

Hi @kenny ,

My apologies for my delayed response, I was OOO. Is the event now sending successfully? 

Kind Regards,
Denis

Sorry for the horrible late reply, thanks Denis, yes, it works.