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.testing;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.Collections;
  import org.apache.beam.sdk.coders.AtomicCoder;
  import org.apache.beam.sdk.coders.CoderException;
  import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
  import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
  import org.apache.beam.sdk.util.SerializableUtils;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.hamcrest.Matchers;
  import org.joda.time.Instant;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.ExpectedException;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link WindowSupplier}. */
  @RunWith(JUnit4.class)
  public class WindowSupplierTest {
    private final IntervalWindow window = new IntervalWindow(new Instant(0L), new Instant(100L));
    private final IntervalWindow otherWindow =
        new IntervalWindow(new Instant(-100L), new Instant(100L));
    @Rule public ExpectedException thrown = ExpectedException.none();
  
    @Test
    public void getReturnsProvidedWindows() {
      assertThat(
          WindowSupplier.of(IntervalWindow.getCoder(), ImmutableList.of(window, otherWindow)).get(),
          Matchers.containsInAnyOrder(otherWindow, window));
    }
  
    @Test
    public void getAfterSerialization() {
      WindowSupplier supplier =
          WindowSupplier.of(IntervalWindow.getCoder(), ImmutableList.of(window, otherWindow));
      assertThat(
          SerializableUtils.clone(supplier).get(), Matchers.containsInAnyOrder(otherWindow, window));
    }
  
    @Test
    public void unencodableWindowFails() {
      thrown.expect(IllegalArgumentException.class);
      thrown.expectMessage("Could not encode");
      WindowSupplier.of(new FailingCoder(), Collections.singleton(window));
    }
  
    private static class FailingCoder extends AtomicCoder<BoundedWindow> {
      @Override
      public void encode(BoundedWindow value, OutputStream outStream)
          throws CoderException, IOException {
        throw new CoderException("Test Encode Exception");
      }
  
      @Override
      public BoundedWindow decode(InputStream inStream) throws CoderException, IOException {
        throw new CoderException("Test Decode Exception");
      }
    }
  }
  