content: /*
   * 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 org.apache.beam.runners.dataflow.worker;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  import static org.mockito.Mockito.when;
  
  import java.util.HashMap;
  import java.util.Map;
  import org.apache.beam.runners.dataflow.util.CloudObject;
  import org.apache.beam.runners.dataflow.util.PropertyNames;
  import org.apache.beam.runners.dataflow.worker.util.common.worker.NativeReader;
  import org.apache.beam.runners.dataflow.worker.windmill.Windmill;
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
  import org.apache.beam.sdk.values.WindowedValue;
  import org.apache.beam.sdk.values.WindowedValues;
  import org.apache.beam.vendor.grpc.v1p69p0.com.google.protobuf.ByteString;
  import org.joda.time.Instant;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  
  /** Unit tests for {@link PubsubReader}. */
  @RunWith(JUnit4.class)
  public class PubsubReaderTest {
    @Mock StreamingModeExecutionContext mockContext;
  
    @Before
    public void setUp() throws Exception {
      MockitoAnnotations.initMocks(this);
    }
  
    private void testReadWith(String parseFn) throws Exception {
      when(mockContext.getWorkItem())
          .thenReturn(
              Windmill.WorkItem.newBuilder()
                  .setKey(ByteString.copyFromUtf8("key"))
                  .setWorkToken(0)
                  .addMessageBundles(
                      Windmill.InputMessageBundle.newBuilder()
                          .setSourceComputationId("pubsub")
                          .addMessages(
                              Windmill.Message.newBuilder()
                                  .setTimestamp(0)
                                  .setData(ByteString.copyFromUtf8("e0")))
                          .addMessages(
                              Windmill.Message.newBuilder()
                                  .setTimestamp(1000)
                                  .setData(ByteString.copyFromUtf8("e1")))
                          .addMessages(
                              Windmill.Message.newBuilder()
                                  .setTimestamp(2000)
                                  .setData(ByteString.copyFromUtf8("e2"))))
                  .build());
  
      Map<String, Object> spec = new HashMap<>();
      spec.put(PropertyNames.OBJECT_TYPE_NAME, "");
      if (parseFn != null) {
        spec.put(PropertyNames.PUBSUB_SERIALIZED_ATTRIBUTES_FN, parseFn);
      }
      CloudObject cloudSourceSpec = CloudObject.fromSpec(spec);
      PubsubReader.Factory factory = new PubsubReader.Factory();
      PubsubReader<String> reader =
          (PubsubReader<String>)
              factory.create(
                  cloudSourceSpec,
                  WindowedValues.getFullCoder(StringUtf8Coder.of(), IntervalWindow.getCoder()),
                  null,
                  mockContext,
                  null);
  
      NativeReader.NativeReaderIterator<WindowedValue<String>> iter = reader.iterator();
      assertTrue(iter.start());
      assertEquals(
          iter.getCurrent(), WindowedValues.timestampedValueInGlobalWindow("e0", new Instant(0)));
      assertTrue(iter.advance());
      assertEquals(
          iter.getCurrent(), WindowedValues.timestampedValueInGlobalWindow("e1", new Instant(1)));
      assertTrue(iter.advance());
      assertEquals(
          iter.getCurrent(), WindowedValues.timestampedValueInGlobalWindow("e2", new Instant(2)));
      assertFalse(iter.advance());
    }
  
    @Test
    public void testBasic() throws Exception {
      testReadWith(null /* No ParseFn */);
    }
  
    @Test
    public void testEmptyParseFn() throws Exception {
      testReadWith("");
    }
  }
  