@Override
            public void handleOnStartException(Throwable throwable) {
                failedCount.incrementAndGet();
                failedCaught = true;
            }
Send 6 test events (2 valid -> 2 invalid -> 2 valid)

@param inputHandler input handler
@throws Exception
modules/siddhi-core/src/test/java/io/siddhi/core/stream/ExceptionHandlerTestCase.java