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.extensions.euphoria.core.testkit;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import org.apache.beam.sdk.extensions.euphoria.core.client.operator.AssignEventTime;
  import org.apache.beam.sdk.extensions.euphoria.core.client.operator.ReduceWindow;
  import org.apache.beam.sdk.extensions.euphoria.core.client.util.Sums;
  import org.apache.beam.sdk.transforms.windowing.DefaultTrigger;
  import org.apache.beam.sdk.transforms.windowing.FixedWindows;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.TypeDescriptor;
  import org.apache.beam.sdk.values.TypeDescriptors;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Test operator {@code ReduceByKey}. */
  @RunWith(JUnit4.class)
  public class ReduceWindowTest extends AbstractOperatorTest {
  
    @Test
    public void testReduceWithWindowing() {
      execute(
          new AbstractTestCase<Integer, Integer>() {
            @Override
            protected PCollection<Integer> getOutput(PCollection<Integer> input) {
              PCollection<Integer> withEventTime =
                  AssignEventTime.of(input).using(i -> 1000L * i).output();
  
              return ReduceWindow.of(withEventTime)
                  .combineBy(Sums.ofInts())
                  .windowBy(FixedWindows.of(org.joda.time.Duration.standardHours(1)))
                  .triggeredBy(DefaultTrigger.of())
                  .discardingFiredPanes()
                  .output();
            }
  
            @Override
            protected List<Integer> getInput() {
              return Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
            }
  
            @Override
            protected TypeDescriptor<Integer> getInputType() {
              return TypeDescriptors.integers();
            }
  
            @Override
            public List<Integer> getUnorderedOutput() {
              return Collections.singletonList(55);
            }
          });
    }
  
    @Test
    public void testReduceWithAttachedWindowing() {
      execute(
          new AbstractTestCase<Integer, Integer>() {
            @Override
            protected PCollection<Integer> getOutput(PCollection<Integer> input) {
              PCollection<Integer> withEventTime =
                  AssignEventTime.of(input).using(i -> 1000L * i).output();
  
              PCollection<Integer> first =
                  ReduceWindow.named("first-reduce")
                      .of(withEventTime)
                      .combineBy(Sums.ofInts())
                      .windowBy(FixedWindows.of(org.joda.time.Duration.standardHours(1)))
                      .triggeredBy(DefaultTrigger.of())
                      .discardingFiredPanes()
                      .output();
  
              return ReduceWindow.named("second-reduce").of(first).combineBy(Sums.ofInts()).output();
            }
  
            @Override
            protected List<Integer> getInput() {
              return Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
            }
  
            @Override
            protected TypeDescriptor<Integer> getInputType() {
              return TypeDescriptors.integers();
            }
  
            @Override
            public List<Integer> getUnorderedOutput() {
              return Collections.singletonList(55);
            }
          });
    }
  
    @Test
    public void testReduceWithAttachedWindowingMoreWindows() {
      execute(
          new AbstractTestCase<Integer, Integer>() {
            @Override
            protected PCollection<Integer> getOutput(PCollection<Integer> input) {
              PCollection<Integer> withEventTime =
                  AssignEventTime.of(input).using(i -> 1000L * i).output();
  
              PCollection<Integer> first =
                  ReduceWindow.named("first-reduce")
                      .of(withEventTime)
                      .combineBy(Sums.ofInts())
                      .windowBy(FixedWindows.of(org.joda.time.Duration.standardSeconds(5)))
                      .triggeredBy(DefaultTrigger.of())
                      .discardingFiredPanes()
                      .output();
  
              return ReduceWindow.named("second-reduce").of(first).combineBy(Sums.ofInts()).output();
            }
  
            @Override
            protected List<Integer> getInput() {
              return Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 100);
            }
  
            @Override
            protected TypeDescriptor<Integer> getInputType() {
              return TypeDescriptors.integers();
            }
  
            @Override
            public List<Integer> getUnorderedOutput() {
              return Arrays.asList(10, 35, 10, 100);
            }
          });
    }
  }
  