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.learning.katas.triggers.eventtimetriggers;
  
  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.Instant;
  import org.junit.Rule;
  import org.junit.Test;
  
  public class TaskTest {
  
    @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.parse("2019-06-01T00:00:00+00:00")))
              .addElements(TimestampedValue.of("event", Instant.parse("2019-06-01T00:00:01+00:00")))
              .addElements(TimestampedValue.of("event", Instant.parse("2019-06-01T00:00:02+00:00")))
              .addElements(TimestampedValue.of("event", Instant.parse("2019-06-01T00:00:03+00:00")))
              .addElements(TimestampedValue.of("event", Instant.parse("2019-06-01T00:00:04+00:00")))
              .advanceWatermarkTo(Instant.parse("2019-06-01T00:00:05+00:00"))
              .addElements(TimestampedValue.of("event", Instant.parse("2019-06-01T00:00:05+00:00")))
              .addElements(TimestampedValue.of("event", Instant.parse("2019-06-01T00:00:06+00:00")))
              .addElements(TimestampedValue.of("event", Instant.parse("2019-06-01T00:00:07+00:00")))
              .advanceWatermarkTo(Instant.parse("2019-06-01T00:00:10+00:00"))
              .advanceWatermarkToInfinity();
  
      PCollection<String> eventsPColl = testPipeline.apply(testStream);
  
      PCollection<Long> results = Task.applyTransform(eventsPColl);
  
      PAssert.that(results)
          .inWindow(createIntervalWindow("2019-06-01T00:00:00+00:00", "2019-06-01T00:00:05+00:00"))
          .containsInAnyOrder(5L)
          .inWindow(createIntervalWindow("2019-06-01T00:00:05+00:00", "2019-06-01T00:00:10+00:00"))
          .containsInAnyOrder(3L);
  
      testPipeline.run().waitUntilFinish();
    }
  
    private IntervalWindow createIntervalWindow(String startStr, String endStr) {
      return new IntervalWindow(Instant.parse(startStr), Instant.parse(endStr));
    }
  
  }