mosche commented on a change in pull request #16478:
URL: https://github.com/apache/beam/pull/16478#discussion_r791511507



##########
File path: 
sdks/java/io/amazon-web-services2/src/test/java/org/apache/beam/sdk/io/aws2/sqs/SqsUnboundedReaderTest.java
##########
@@ -17,113 +17,155 @@
  */
 package org.apache.beam.sdk.io.aws2.sqs;
 
+import static java.lang.System.currentTimeMillis;
+import static java.util.stream.IntStream.range;
 import static junit.framework.TestCase.assertFalse;
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
+import static org.mockito.Answers.RETURNS_DEEP_STUBS;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
 
 import java.io.IOException;
+import java.time.Clock;
 import java.util.ArrayList;
-import java.util.HashSet;
 import java.util.List;
+import org.apache.beam.sdk.coders.SerializableCoder;
 import org.apache.beam.sdk.io.UnboundedSource;
-import org.apache.beam.sdk.testing.TestPipeline;
+import org.apache.beam.sdk.io.aws2.sqs.EmbeddedSqsServer.TestCaseEnv;
 import org.apache.beam.sdk.util.CoderUtils;
+import org.junit.ClassRule;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.junit.runners.JUnit4;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
 import software.amazon.awssdk.services.sqs.SqsClient;
-import 
software.amazon.awssdk.services.sqs.model.ChangeMessageVisibilityRequest;
-import software.amazon.awssdk.services.sqs.model.SendMessageRequest;
 
 /** Tests on {@link SqsUnboundedReader}. */
-@RunWith(JUnit4.class)
+@RunWith(MockitoJUnitRunner.class)
 public class SqsUnboundedReaderTest {
   private static final String DATA = "testData";
 
-  @Rule public TestPipeline pipeline = TestPipeline.create();
+  @ClassRule public static EmbeddedSqsServer sqsServer = new 
EmbeddedSqsServer();
 
-  @Rule public EmbeddedSqsServer embeddedSqsRestServer = new 
EmbeddedSqsServer();
+  @Rule public TestCaseEnv testCase = new TestCaseEnv(sqsServer);
 
-  private SqsUnboundedSource source;
+  @Mock(answer = RETURNS_DEEP_STUBS)
+  public SqsUnboundedSource mockSource;
 
-  private void setupOneMessage() {
-    final SqsClient client = embeddedSqsRestServer.getClient();
-    final String queueUrl = embeddedSqsRestServer.getQueueUrl();
-    
client.sendMessage(SendMessageRequest.builder().queueUrl(queueUrl).messageBody(DATA).build());
-    source =
-        new SqsUnboundedSource(
-            SqsIO.read()
-                .withQueueUrl(queueUrl)
-                .withSqsClientProvider(SqsClientProviderMock.of(client))
-                .withMaxNumRecords(1));
-  }
-
-  private void setupMessages(List<String> messages) {
-    final SqsClient client = embeddedSqsRestServer.getClient();
-    final String queueUrl = embeddedSqsRestServer.getQueueUrl();
+  private void setupMessages(String... messages) {
+    final SqsClient client = testCase.getClient();
+    final String queueUrl = testCase.getQueueUrl();
     for (String message : messages) {
-      client.sendMessage(
-          
SendMessageRequest.builder().queueUrl(queueUrl).messageBody(message).build());
+      client.sendMessage(b -> b.queueUrl(queueUrl).messageBody(message));
     }
-    source =
-        new SqsUnboundedSource(
-            SqsIO.read()
-                .withQueueUrl(queueUrl)
-                .withSqsClientProvider(SqsClientProviderMock.of(client))
-                .withMaxNumRecords(messages.size()));
+
+    
when(mockSource.getRead().sqsClientProvider()).thenReturn(SqsClientProviderMock.of(client));
+    when(mockSource.getRead().queueUrl()).thenReturn(queueUrl);
   }
 
   @Test
   public void testReadOneMessage() throws IOException {
-    setupOneMessage();
-    UnboundedSource.UnboundedReader<SqsMessage> reader =
-        source.createReader(pipeline.getOptions(), null);
+    setupMessages(DATA);
+    SqsUnboundedReader reader = new SqsUnboundedReader(mockSource, null);
+
     // Read one message.
     assertTrue(reader.start());
     assertEquals(DATA, reader.getCurrent().getBody());
     assertFalse(reader.advance());
+
     // ACK the message.
     UnboundedSource.CheckpointMark checkpoint = reader.getCheckpointMark();
     checkpoint.finalizeCheckpoint();
     reader.close();
   }
 
   @Test
-  public void testTimeoutAckAndRereadOneMessage() throws IOException {
-    setupOneMessage();
-    UnboundedSource.UnboundedReader<SqsMessage> reader =
-        source.createReader(pipeline.getOptions(), null);
-    SqsClient sqsClient = embeddedSqsRestServer.getClient();
+  public void testAckDeletedMessage() throws IOException {

Review comment:
       Done 👍 




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