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.learning.katas.triggers.earlytriggers;
  
  import java.io.Serializable;
  import org.apache.beam.sdk.coders.SerializableCoder;
  import org.apache.beam.sdk.testing.PAssert;
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.apache.beam.sdk.testing.TestStream;
  import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.TimestampedValue;
  import org.joda.time.Duration;
  import org.joda.time.Instant;
  import org.junit.Rule;
  import org.junit.Test;
  
  public class TaskTest implements Serializable {
  
    @Rule
    public final transient TestPipeline testPipeline = TestPipeline.create();
  
    @Test
    public void eventTimeTrigger() {
      TestStream<String> testStream =
          TestStream.create(SerializableCoder.of(String.class))
              .addElements(TimestampedValue.of("event", Instant.ofEpochSecond(0)))
              .advanceProcessingTime(Duration.standardSeconds(1))
              .addElements(TimestampedValue.of("event", Instant.ofEpochSecond(1)))
              .addElements(TimestampedValue.of("event", Instant.ofEpochSecond(2)))
              .addElements(TimestampedValue.of("event", Instant.ofEpochSecond(3)))
              .addElements(TimestampedValue.of("event", Instant.ofEpochSecond(4)))
              .advanceProcessingTime(Duration.standardSeconds(1))
              .addElements(TimestampedValue.of("event", Instant.ofEpochSecond(5)))
              .addElements(TimestampedValue.of("event", Instant.ofEpochSecond(6)))
              .advanceWatermarkToInfinity();
  
      PCollection<String> eventsPColl = testPipeline.apply(testStream);
  
      PCollection<Long> results = Task.applyTransform(eventsPColl);
  
      PAssert.that(results)
          .inEarlyPane(new IntervalWindow(Instant.EPOCH, Instant.parse("1970-01-02T00:00:00+00:00")))
          .containsInAnyOrder(1L, 4L)
          .inFinalPane(new IntervalWindow(Instant.EPOCH, Instant.parse("1970-01-02T00:00:00+00:00")))
          .containsInAnyOrder(2L);
  
      testPipeline.run().waitUntilFinish();
    }
  
  }