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.
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  package org.apache.beam.runners.spark.util;
  
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import java.util.Arrays;
  import java.util.Collections;
  import org.apache.beam.runners.core.StateNamespace;
  import org.apache.beam.runners.core.StateNamespaces;
  import org.apache.beam.runners.core.TimerInternals;
  import org.apache.beam.runners.spark.stateful.SparkTimerInternals;
  import org.apache.beam.runners.spark.translation.AbstractInOutIterator;
  import org.apache.beam.sdk.state.TimeDomain;
  import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
  import org.apache.beam.sdk.values.WindowingStrategy;
  import org.joda.time.Duration;
  import org.joda.time.Instant;
  import org.junit.Before;
  import org.junit.Test;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  
  /** Tests for {@link TimerUtils}. */
  public class TimerUtilsTest {
  
    @Mock private SparkTimerInternals mockTimerInternals;
    @Mock private WindowingStrategy<?, IntervalWindow> mockWindowingStrategy;
    @Mock private AbstractInOutIterator<?, ?, ?> mockIterator;
    @Mock private TimerInternals.TimerData expiredTimer;
    @Mock private TimerInternals.TimerData activeTimer;
    @Mock private IntervalWindow mockWindow;
  
    private static final Instant NOW = new Instant(1000L);
    private static final Duration ALLOWED_LATENESS = Duration.standardMinutes(5);
  
    @Before
    public void setUp() {
      MockitoAnnotations.initMocks(this);
      StateNamespace namespace = StateNamespaces.window(IntervalWindow.getCoder(), mockWindow);
  
      // Set up an expired event-time timer (timestamp + allowed lateness < watermark)
      when(expiredTimer.getTimestamp())
          .thenReturn(NOW.minus(ALLOWED_LATENESS.plus(Duration.standardMinutes(1))));
      when(expiredTimer.getDomain()).thenReturn(TimeDomain.EVENT_TIME);
      when(expiredTimer.getNamespace()).thenReturn(namespace);
  
      // Set up a non-expired event-time timer (timestamp + allowed lateness > watermark)
      when(activeTimer.getTimestamp()).thenReturn(NOW);
      when(activeTimer.getDomain()).thenReturn(TimeDomain.EVENT_TIME);
      when(activeTimer.getNamespace()).thenReturn(namespace);
  
      // Configure the mocks
      when(mockWindowingStrategy.getAllowedLateness()).thenReturn(ALLOWED_LATENESS);
      when(mockTimerInternals.currentInputWatermarkTime()).thenReturn(NOW);
      when(mockTimerInternals.currentProcessingTime()).thenReturn(NOW);
    }
  
    @Test
    public void testTriggerExpiredTimers() {
      // Set up the mock timer internals to return both timers
      when(mockTimerInternals.getTimers()).thenReturn(Arrays.asList(expiredTimer, activeTimer));
  
      // Call the method under test
      TimerUtils.triggerExpiredTimers(mockTimerInternals, mockWindowingStrategy, mockIterator);
  
      // Verify that fireTimer was called only for the expired timer
      verify(mockIterator).fireTimer(expiredTimer);
      verify(mockIterator, never()).fireTimer(activeTimer);
    }
  
    @Test
    public void testTriggerExpiredTimersWithNoExpiredTimers() {
      // Set up the mock timer internals to return only the active timer
      when(mockTimerInternals.getTimers()).thenReturn(Collections.singletonList(activeTimer));
  
      // Call the method under test
      TimerUtils.triggerExpiredTimers(mockTimerInternals, mockWindowingStrategy, mockIterator);
  
      // Verify that fireTimer was not called for any timer
      verify(mockIterator, never()).fireTimer(any());
    }
  
    @Test
    public void testTriggerExpiredTimersWithEmptyTimers() {
      // Set up the mock timer internals to return an empty list
      when(mockTimerInternals.getTimers()).thenReturn(Collections.emptyList());
  
      // Call the method under test
      TimerUtils.triggerExpiredTimers(mockTimerInternals, mockWindowingStrategy, mockIterator);
  
      // Verify that fireTimer was not called
      verify(mockIterator, never()).fireTimer(any());
    }
  
    @Test
    public void testTriggerExpiredTimersWithProcessingTimeDomain() {
      // Set up a processing-time timer
      when(expiredTimer.getDomain()).thenReturn(TimeDomain.PROCESSING_TIME);
  
      // Set up the mock timer internals to return only the expired timer
      when(mockTimerInternals.getTimers()).thenReturn(Collections.singletonList(expiredTimer));
  
      // Call the method under test
      TimerUtils.triggerExpiredTimers(mockTimerInternals, mockWindowingStrategy, mockIterator);
  
      // Verify that fireTimer was called for the expired timer
      verify(mockIterator).fireTimer(expiredTimer);
    }
  }
  