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.values;
  
  import static org.junit.Assert.assertEquals;
  
  import com.google.common.testing.EqualsTester;
  import org.apache.beam.sdk.coders.Coder;
  import org.apache.beam.sdk.testing.CoderProperties;
  import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
  import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
  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;
  
  /** Unit tests for {@link TimestampedValue}. */
  @RunWith(JUnit4.class)
  public class TimestampedValueTest {
    @Rule public ExpectedException thrown = ExpectedException.none();
  
    @Test
    public void testValues() {
      Instant now = Instant.now();
      TimestampedValue<String> tsv = TimestampedValue.of("foobar", now);
  
      assertEquals(now, tsv.getTimestamp());
      assertEquals("foobar", tsv.getValue());
    }
  
    @Test
    public void testAtMinimumTimestamp() {
      TimestampedValue<String> tsv = TimestampedValue.atMinimumTimestamp("foobar");
      assertEquals(BoundedWindow.TIMESTAMP_MIN_VALUE, tsv.getTimestamp());
    }
  
    @Test
    public void testNullTimestamp() {
      thrown.expect(NullPointerException.class);
      thrown.expectMessage("timestamp");
      TimestampedValue.of("foobar", null);
    }
  
    @Test
    public void testNullValue() {
      TimestampedValue<String> tsv = TimestampedValue.atMinimumTimestamp(null);
      assertEquals(null, tsv.getValue());
    }
  
    @Test
    public void testEquality() {
      new EqualsTester()
          .addEqualityGroup(
              TimestampedValue.of("foo", new Instant(1000)),
              TimestampedValue.of("foo", new Instant(1000)))
          .addEqualityGroup(TimestampedValue.of("foo", new Instant(2000)))
          .addEqualityGroup(TimestampedValue.of("bar", new Instant(1000)))
          .addEqualityGroup(
              TimestampedValue.of("foo", BoundedWindow.TIMESTAMP_MIN_VALUE),
              TimestampedValue.atMinimumTimestamp("foo"))
          .testEquals();
    }
  
    private static final Coder<TimestampedValue<GlobalWindow>> CODER =
        TimestampedValue.TimestampedValueCoder.of(GlobalWindow.Coder.INSTANCE);
  
    @Test
    public void testCoderEncodeDecodeEquals() throws Exception {
      CoderProperties.coderDecodeEncodeEqual(
          CODER, TimestampedValue.of(GlobalWindow.INSTANCE, Instant.now()));
    }
  
    @Test
    public void testCoderIsSerializableWithWellKnownCoderType() {
      CoderProperties.coderSerializable(CODER);
    }
  }
  