@Test
public void testOpenClose() throws Exception {
KeySelector<Integer, Integer> keySelector =
new KeySelector<Integer, Integer>() {
@Override
public Integer getKey(Integer value) {
return value;
}
};
StreamGroupedFold<Integer, String, Integer> operator =
new StreamGroupedFold<>(new TestOpenCloseFoldFunction(), "init");
operator.setOutputType(BasicTypeInfo.STRING_TYPE_INFO, new ExecutionConfig());
OneInputStreamOperatorTestHarness<Integer, String> testHarness =
new OneInputStreamOperatorTestHarness<>(operator);
testHarness.configureForKeyedStream(keySelector, BasicTypeInfo.INT_TYPE_INFO);
long initialTime = 0L;
testHarness.open();
testHarness.processElement(new StreamRecord<>(1, initialTime));
testHarness.processElement(new StreamRecord<>(2, initialTime));
testHarness.close();
assertTrue("RichFunction methods where not called.", TestOpenCloseFoldFunction.closeCalled);
assertTrue("Output contains no elements.", testHarness.getOutput().size() > 0);
}
@Test
public void testGroupedFold() throws Exception {
KeySelector<Integer, String> keySelector =
new KeySelector<Integer, String>() {
@Override
public String getKey(Integer value) {
return value.toString();
}
};
StreamGroupedFold<Integer, String, String> operator =
new StreamGroupedFold<>(new MyFolder(), "100");
operator.setOutputType(BasicTypeInfo.STRING_TYPE_INFO, new ExecutionConfig());
OneInputStreamOperatorTestHarness<Integer, String> testHarness =
new OneInputStreamOperatorTestHarness<>(operator);
testHarness.configureForKeyedStream(keySelector, BasicTypeInfo.STRING_TYPE_INFO);
long initialTime = 0L;
ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>();
testHarness.open();
testHarness.processElement(new StreamRecord<>(1, initialTime + 1));
testHarness.processElement(new StreamRecord<>(1, initialTime + 2));
testHarness.processWatermark(new Watermark(initialTime + 2));
testHarness.processElement(new StreamRecord<>(2, initialTime + 3));
testHarness.processElement(new StreamRecord<>(2, initialTime + 4));
testHarness.processElement(new StreamRecord<>(3, initialTime + 5));
expectedOutput.add(new StreamRecord<>("1001", initialTime + 1));
expectedOutput.add(new StreamRecord<>("10011", initialTime + 2));
expectedOutput.add(new Watermark(initialTime + 2));
expectedOutput.add(new StreamRecord<>("1002", initialTime + 3));
expectedOutput.add(new StreamRecord<>("10022", initialTime + 4));
expectedOutput.add(new StreamRecord<>("1003", initialTime + 5));
TestHarnessUtil.assertOutputEquals(
"Output was not correct.", expectedOutput, testHarness.getOutput());
}