收集后Flink TestHarness输出未清除

Question

我进行了以下测试：

testHarness.processElement2(new StreamRecord<>(element1));
testHarness.processElement1(new StreamRecord<>(new Tuple2<>(id, element2)));

testHarness.setProcessingTime(1); //let's assume it's the correct time for the timer inside the function
softly.assertThat(testHarness.getOutput()).containsExactly(new StreamRecord<>(expectedResult)); //this one is passed

testHarness.setProcessingTime(2); // setting second timer which will trigger different timer
softly.assertThat(testHarness.getOutput()).containsExactly(new StreamRecord<>(expectedResult2)); //fails cause output has  expectedResult & expectedResult2

为什么一旦调用getOutput（），TestHarness就不清除其元素？可以通过某种方式实现此功能吗？

Answer 1

这可以通过在输出中调用clear（）来实现：

y_test