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.util.construction.renderer;
  
  import static org.junit.Assert.assertEquals;
  
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.apache.beam.sdk.transforms.Create;
  import org.apache.beam.sdk.transforms.Sum;
  import org.apache.beam.sdk.transforms.windowing.FixedWindows;
  import org.apache.beam.sdk.transforms.windowing.Window;
  import org.apache.beam.sdk.util.construction.PipelineTranslation;
  import org.apache.beam.sdk.values.KV;
  import org.apache.beam.sdk.values.TimestampedValue;
  import org.joda.time.Duration;
  import org.joda.time.Instant;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link PortablePipelineDotRenderer}. */
  @RunWith(JUnit4.class)
  public class PortablePipelineDotRendererTest {
    @Rule public final transient TestPipeline p = TestPipeline.create();
  
    @Test
    public void testEmptyPipeline() {
      assertEquals(
          "digraph {" + "    rankdir=LR" + "}",
          PortablePipelineDotRenderer.toDotString(PipelineTranslation.toProto(p))
              .replaceAll(System.lineSeparator(), ""));
    }
  
    @Test
    public void testCompositePipeline() {
      p.apply(Create.timestamped(TimestampedValue.of(KV.of(1, 1), new Instant(1))))
          .apply(Window.into(FixedWindows.of(Duration.millis(10))))
          .apply(Sum.integersPerKey());
  
      assertEquals(
          "digraph {"
              + "    rankdir=LR"
              + "    0 [label=\"Create.TimestampedValues\\n\"]"
              + "    1 [label=\"Window.Into()\\n\"]"
              + "    0 -> 1 [style=solid label=\"Create.TimestampedValues/ParDo(ConvertTimestamps)/ParMultiDo(ConvertTimestamps).output\"]"
              + "    2 [label=\"Combine.perKey(SumInteger)\\nbeam:transform:combine_per_key:v1\"]"
              + "    1 -> 2 [style=solid label=\"Window.Into()/Window.Assign.out\"]"
              + "}",
          PortablePipelineDotRenderer.toDotString(PipelineTranslation.toProto(p))
              .replaceAll(System.lineSeparator(), ""));
    }
  }
  