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.coders;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.equalTo;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import org.apache.beam.sdk.testing.CoderProperties;
  import org.apache.beam.sdk.util.CoderUtils;
  import org.apache.beam.sdk.values.TypeDescriptor;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Lists;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.primitives.UnsignedBytes;
  import org.joda.time.Instant;
  import org.junit.Assert;
  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 InstantCoder}. */
  @RunWith(JUnit4.class)
  public class InstantCoderTest {
  
    private static final InstantCoder TEST_CODER = InstantCoder.of();
  
    private static final List<Long> TEST_TIMESTAMPS =
        Arrays.asList(0L, 1L, -1L, -255L, 256L, Long.MIN_VALUE, Long.MAX_VALUE);
  
    private static final List<Instant> TEST_VALUES;
  
    static {
      TEST_VALUES = Lists.newArrayList();
      for (long timestamp : TEST_TIMESTAMPS) {
        TEST_VALUES.add(new Instant(timestamp));
      }
    }
  
    @Test
    public void testBasicEncoding() throws Exception {
      for (Instant value : TEST_VALUES) {
        CoderProperties.coderDecodeEncodeEqual(TEST_CODER, value);
      }
    }
  
    @Test
    public void testOrderedEncoding() throws Exception {
      List<Long> sortedTimestamps = new ArrayList<>(TEST_TIMESTAMPS);
      Collections.sort(sortedTimestamps);
  
      List<byte[]> encodings = new ArrayList<>(sortedTimestamps.size());
      for (long timestamp : sortedTimestamps) {
        encodings.add(CoderUtils.encodeToByteArray(TEST_CODER, new Instant(timestamp)));
      }
  
      // Verify that the encodings were already sorted, since they were generated
      // in the correct order.
      List<byte[]> sortedEncodings = new ArrayList<>(encodings);
      sortedEncodings.sort(UnsignedBytes.lexicographicalComparator());
  
      Assert.assertEquals(encodings, sortedEncodings);
    }
  
    /**
     * Generated data to check that the wire format has not changed. To regenerate, see {@link
     * org.apache.beam.sdk.coders.PrintBase64Encodings}.
     */
    private static final List<String> TEST_ENCODINGS =
        Arrays.asList(
            "gAAAAAAAAAA",
            "gAAAAAAAAAE",
            "f_________8",
            "f________wE",
            "gAAAAAAAAQA",
            "AAAAAAAAAAA",
            "__________8");
  
    @Test
    public void testWireFormatEncode() throws Exception {
      CoderProperties.coderEncodesBase64(TEST_CODER, TEST_VALUES, TEST_ENCODINGS);
    }
  
    @Rule public ExpectedException thrown = ExpectedException.none();
  
    @Test
    public void encodeNullThrowsCoderException() throws Exception {
      thrown.expect(CoderException.class);
      thrown.expectMessage("cannot encode a null Instant");
  
      CoderUtils.encodeToBase64(TEST_CODER, null);
    }
  
    @Test
    public void testEncodedTypeDescriptor() throws Exception {
      assertThat(TEST_CODER.getEncodedTypeDescriptor(), equalTo(TypeDescriptor.of(Instant.class)));
    }
  }
  