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.transforms;
  
  import static org.junit.Assert.assertEquals;
  
  import java.util.Arrays;
  import org.apache.beam.sdk.coders.BigEndianIntegerCoder;
  import org.apache.beam.sdk.coders.KvCoder;
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.testing.NeedsRunner;
  import org.apache.beam.sdk.testing.PAssert;
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.apache.beam.sdk.values.KV;
  import org.apache.beam.sdk.values.PCollection;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for Values transform. */
  @RunWith(JUnit4.class)
  public class ValuesTest {
    @SuppressWarnings({
      "rawtypes", // TODO(https://github.com/apache/beam/issues/20447)
      "unchecked"
    })
    static final KV<String, Integer>[] TABLE =
        new KV[] {
          KV.of("one", 1), KV.of("two", 2), KV.of("three", 3), KV.of("four", 4), KV.of("dup", 4)
        };
  
    @SuppressWarnings({
      "rawtypes", // TODO(https://github.com/apache/beam/issues/20447)
      "unchecked"
    })
    static final KV<String, Integer>[] EMPTY_TABLE = new KV[] {};
  
    @Rule public final TestPipeline p = TestPipeline.create();
  
    @Test
    @Category(NeedsRunner.class)
    public void testValues() {
  
      PCollection<KV<String, Integer>> input =
          p.apply(
              Create.of(Arrays.asList(TABLE))
                  .withCoder(KvCoder.of(StringUtf8Coder.of(), BigEndianIntegerCoder.of())));
  
      PCollection<Integer> output = input.apply(Values.create());
  
      PAssert.that(output).containsInAnyOrder(1, 2, 3, 4, 4);
  
      p.run();
    }
  
    @Test
    @Category(NeedsRunner.class)
    public void testValuesEmpty() {
  
      PCollection<KV<String, Integer>> input =
          p.apply(
              Create.of(Arrays.asList(EMPTY_TABLE))
                  .withCoder(KvCoder.of(StringUtf8Coder.of(), BigEndianIntegerCoder.of())));
  
      PCollection<Integer> output = input.apply(Values.create());
  
      PAssert.that(output).empty();
  
      p.run();
    }
  
    @Test
    public void testValuesGetName() {
      assertEquals("Values", Values.<Integer>create().getName());
    }
  }
  