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.sdk.transforms.windowing;
  
  import static org.junit.Assert.assertEquals;
  
  import org.apache.beam.sdk.transforms.windowing.Trigger.OnceTrigger;
  import org.joda.time.Instant;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link OrFinallyTrigger}. */
  @RunWith(JUnit4.class)
  public class OrFinallyTriggerTest {
  
    @Test
    public void testFireDeadline() throws Exception {
      BoundedWindow window = new IntervalWindow(new Instant(0), new Instant(10));
  
      assertEquals(
          new Instant(9),
          Repeatedly.forever(AfterWatermark.pastEndOfWindow())
              .getWatermarkThatGuaranteesFiring(window));
      assertEquals(
          new Instant(9),
          Repeatedly.forever(AfterWatermark.pastEndOfWindow())
              .orFinally(AfterPane.elementCountAtLeast(1))
              .getWatermarkThatGuaranteesFiring(window));
      assertEquals(
          new Instant(9),
          Repeatedly.forever(AfterPane.elementCountAtLeast(1))
              .orFinally(AfterWatermark.pastEndOfWindow())
              .getWatermarkThatGuaranteesFiring(window));
      assertEquals(
          new Instant(9),
          AfterPane.elementCountAtLeast(100)
              .orFinally(AfterWatermark.pastEndOfWindow())
              .getWatermarkThatGuaranteesFiring(window));
  
      assertEquals(
          BoundedWindow.TIMESTAMP_MAX_VALUE,
          Repeatedly.forever(AfterPane.elementCountAtLeast(1))
              .orFinally(AfterPane.elementCountAtLeast(10))
              .getWatermarkThatGuaranteesFiring(window));
    }
  
    @Test
    public void testContinuation() throws Exception {
      OnceTrigger triggerA = AfterProcessingTime.pastFirstElementInPane();
      OnceTrigger triggerB = AfterWatermark.pastEndOfWindow();
      Trigger aOrFinallyB = triggerA.orFinally(triggerB);
      Trigger bOrFinallyA = triggerB.orFinally(triggerA);
      assertEquals(
          Repeatedly.forever(
              triggerA.getContinuationTrigger().orFinally(triggerB.getContinuationTrigger())),
          aOrFinallyB.getContinuationTrigger());
      assertEquals(
          Repeatedly.forever(
              triggerB.getContinuationTrigger().orFinally(triggerA.getContinuationTrigger())),
          bOrFinallyA.getContinuationTrigger());
    }
  
    @Test
    public void testToString() {
      Trigger trigger = StubTrigger.named("t1").orFinally(StubTrigger.named("t2"));
      assertEquals("t1.orFinally(t2)", trigger.toString());
    }
  }
  