Github user chinmaykolhatkar commented on a diff in the pull request:
https://github.com/apache/incubator-apex-malhar/pull/157#discussion_r49928190
--- Diff:
library/src/test/java/com/datatorrent/lib/async/AbstractAsyncProcessorTest.java
---
@@ -0,0 +1,145 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package com.datatorrent.lib.async;
+
+import com.datatorrent.api.DefaultInputPort;
+import com.datatorrent.api.DefaultOutputPort;
+import com.datatorrent.lib.testbench.CollectorTestSink;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.List;
+
+public class AbstractAsyncProcessorTest
+{
+ public static class TestAsyncProcessor extends
AbstractAsyncProcessor<String, String>
+ {
+ public transient final DefaultInputPort<String> input = new
DefaultInputPort<String>()
+ {
+ @Override public void process(String s)
+ {
+ enqueueTupleForProcessing(s);
+ }
+ };
+ public transient final DefaultOutputPort<String> output = new
DefaultOutputPort<>();
+ public transient final DefaultOutputPort<String> error = new
DefaultOutputPort<>();
+
+ @Override protected void handleProcessedTuple(String inpTuple, String
resultTuple, State processState)
+ {
+ if (processState == State.SUCCESS) {
+ output.emit(resultTuple);
+ } else {
+ error.emit(inpTuple);
+ }
+ }
+
+ @Override protected String processTupleAsync(String tuple)
+ {
+ int i = Integer.parseInt(tuple) % 3;
+ switch (i % 3) {
+ case 1:
+ return tuple + ";FIRSTPASS";
+ case 2:
+ return tuple + ";SECONDPASS";
+ case 0:
+ default:
+ throw new RuntimeException("Expected");
+ }
+ }
+ }
+
+ @Test public void maintainOrderTest() throws InterruptedException
+ {
+ testOperator(1, true, 5000);
+ testOperator(1, true, 15000);
+ }
+
+ @Test public void noOrderMaintainedTest() throws InterruptedException
+ {
+ testOperator(1, false, 5000);
+ testOperator(2, false, 15000);
+ }
+
+ private void testOperator(int numThreads, boolean maintainOrder, long
waitInterval) throws InterruptedException
+ {
+ CollectorTestSink<Object> sinkOut = new CollectorTestSink<>();
+ CollectorTestSink<Object> sinkErr = new CollectorTestSink<>();
+
+ TestAsyncProcessor async = new TestAsyncProcessor();
+ async.setNumProcessors(numThreads);
+ async.setMaintainTupleOrder(maintainOrder);
+ async.output.setSink(sinkOut);
+ async.error.setSink(sinkErr);
+ async.setup(null);
+
+ for (int windowId = 0; windowId < 10; windowId++) {
+ async.beginWindow(windowId);
+ for (int i = 0; i < 100; i++) {
+ async.input.put(Integer.toString(windowId * 100 + i));
+ }
+ async.endWindow();
+ }
+
+ for (int i = 0; i < 10; i++) {
+ Thread.sleep(waitInterval / 10);
+ async.endWindow();
+ }
+ async.teardown();
+
+ List<Object> outTuples = sinkOut.collectedTuples;
+ List<Object> errTuples = sinkErr.collectedTuples;
+ Assert.assertEquals(666, outTuples.size());
+ Assert.assertEquals(334, errTuples.size());
+
+ int previous = -1;
+ for (Object outTuple : outTuples) {
+ Assert.assertTrue(outTuple instanceof String);
+ String outTuple1 = (String)outTuple;
+ String[] split = outTuple1.split(";");
+ Assert.assertEquals(2, split.length);
+ int current = Integer.parseInt(split[0]);
--- End diff --
Done.
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