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.direct;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.not;
  import static org.hamcrest.Matchers.nullValue;
  import static org.junit.Assert.fail;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.doThrow;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  
  import org.apache.beam.runners.core.StateNamespaces;
  import org.apache.beam.runners.core.TimerInternals.TimerData;
  import org.apache.beam.sdk.options.PipelineOptionsFactory;
  import org.apache.beam.sdk.state.TimeDomain;
  import org.apache.beam.sdk.transforms.DoFn;
  import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
  import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
  import org.apache.beam.sdk.values.WindowedValue;
  import org.apache.beam.sdk.values.WindowedValues;
  import org.hamcrest.Matchers;
  import org.joda.time.Instant;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link DoFnLifecycleManagerRemovingTransformEvaluator}. */
  @RunWith(JUnit4.class)
  public class DoFnLifecycleManagerRemovingTransformEvaluatorTest {
    private DoFnLifecycleManager lifecycleManager;
  
    @Before
    public void setup() {
      lifecycleManager = DoFnLifecycleManager.of(new TestFn(), PipelineOptionsFactory.create());
    }
  
    @Test
    public void delegatesToUnderlying() throws Exception {
      ParDoEvaluator<Object> underlying = mock(ParDoEvaluator.class);
      TransformEvaluator<Object> evaluator =
          DoFnLifecycleManagerRemovingTransformEvaluator.wrapping(underlying, lifecycleManager);
      WindowedValue<Object> first = WindowedValues.valueInGlobalWindow(new Object());
      WindowedValue<Object> second = WindowedValues.valueInGlobalWindow(new Object());
  
      evaluator.processElement(first);
      verify(underlying).processElement(first);
  
      evaluator.processElement(second);
      verify(underlying).processElement(second);
  
      evaluator.finishBundle();
      verify(underlying).finishBundle();
    }
  
    @Test
    public void removesOnExceptionInProcessElement() throws Exception {
      ParDoEvaluator<Object> underlying = mock(ParDoEvaluator.class);
      doThrow(IllegalArgumentException.class)
          .when(underlying)
          .processElement(any(WindowedValue.class));
  
      DoFn<?, ?> original = lifecycleManager.get();
      assertThat(original, not(nullValue()));
      TransformEvaluator<Object> evaluator =
          DoFnLifecycleManagerRemovingTransformEvaluator.wrapping(underlying, lifecycleManager);
  
      try {
        evaluator.processElement(WindowedValues.valueInGlobalWindow(new Object()));
      } catch (Exception e) {
        assertThat(lifecycleManager.get(), not(Matchers.theInstance(original)));
        return;
      }
      fail("Expected underlying evaluator to throw on method call");
    }
  
    @Test
    public void removesOnExceptionInOnTimer() throws Exception {
      ParDoEvaluator<Object> underlying = mock(ParDoEvaluator.class);
      doThrow(IllegalArgumentException.class)
          .when(underlying)
          .onTimer(any(TimerData.class), any(Object.class), any(BoundedWindow.class));
  
      DoFn<?, ?> original = lifecycleManager.get();
      assertThat(original, not(nullValue()));
      DoFnLifecycleManagerRemovingTransformEvaluator<Object> evaluator =
          DoFnLifecycleManagerRemovingTransformEvaluator.wrapping(underlying, lifecycleManager);
  
      try {
        evaluator.onTimer(
            TimerData.of(
                "foo",
                StateNamespaces.global(),
                new Instant(0),
                new Instant(0),
                TimeDomain.EVENT_TIME),
            "",
            GlobalWindow.INSTANCE);
      } catch (Exception e) {
        assertThat(lifecycleManager.get(), not(Matchers.theInstance(original)));
        return;
      }
      fail("Expected underlying evaluator to throw on method call");
    }
  
    @Test
    public void removesOnExceptionInFinishBundle() throws Exception {
      ParDoEvaluator<Object> underlying = mock(ParDoEvaluator.class);
      doThrow(IllegalArgumentException.class).when(underlying).finishBundle();
  
      DoFn<?, ?> original = lifecycleManager.get();
      // the LifecycleManager is set when the evaluator starts
      assertThat(original, not(nullValue()));
      TransformEvaluator<Object> evaluator =
          DoFnLifecycleManagerRemovingTransformEvaluator.wrapping(underlying, lifecycleManager);
  
      try {
        evaluator.finishBundle();
      } catch (Exception e) {
        assertThat(lifecycleManager.get(), not(Matchers.theInstance(original)));
        return;
      }
      fail("Expected underlying evaluator to throw on method call");
    }
  
    private static class TestFn extends DoFn<Object, Object> {
      @ProcessElement
      public void processElement(ProcessContext c) throws Exception {}
    }
  }
  