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.translate;
  
  import org.apache.beam.sdk.Pipeline;
  import org.apache.beam.sdk.extensions.euphoria.core.client.operator.CountByKey;
  import org.apache.beam.sdk.testing.PAssert;
  import org.apache.beam.sdk.transforms.Create;
  import org.apache.beam.sdk.values.KV;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.TypeDescriptors;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Test suite for {@link TimetampExtractTransform}. */
  @RunWith(JUnit4.class)
  public class TimestampExtractTransformTest {
  
    @SuppressWarnings("unchecked")
    @Test(timeout = 10000)
    public void testTransform() {
      Pipeline p = Pipeline.create();
      PCollection<Integer> input = p.apply(Create.of(1, 2, 3));
      PCollection<KV<Integer, Long>> result =
          input.apply(
              TimestampExtractTransform.of(
                  in -> CountByKey.of(in).keyBy(KV::getValue, TypeDescriptors.integers()).output()));
      PAssert.that(result).containsInAnyOrder(KV.of(1, 1L), KV.of(2, 1L), KV.of(3, 1L));
      p.run().waitUntilFinish();
    }
  }
  