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.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.greaterThan;
  import static org.hamcrest.Matchers.startsWith;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotEquals;
  
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Splitter;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Iterables;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link TupleTag}. */
  @RunWith(JUnit4.class)
  public class TupleTagTest {
  
    private static TupleTag<Object> staticTag = new TupleTag<>();
    private static TupleTag<Object> staticBlockTag;
    private static TupleTag<Object> staticMethodTag = createTag();
    private static TupleTag<Object> instanceMethodTag = new AnotherClass().createAnotherTag();
  
    static {
      staticBlockTag = new TupleTag<>();
    }
  
    private static TupleTag<Object> createTag() {
      return new TupleTag<>();
    }
  
    private static class AnotherClass {
      private static TupleTag<Object> anotherTag = new TupleTag<>();
  
      private TupleTag<Object> createAnotherTag() {
        return new TupleTag<>();
      }
    }
  
    @Test
    public void testStaticTupleTag() {
      assertEquals("org.apache.beam.sdk.values.TupleTagTest#0", staticTag.getId());
      assertEquals("org.apache.beam.sdk.values.TupleTagTest#3", staticBlockTag.getId());
      assertEquals("org.apache.beam.sdk.values.TupleTagTest#1", staticMethodTag.getId());
      assertEquals("org.apache.beam.sdk.values.TupleTagTest#2", instanceMethodTag.getId());
      assertEquals(
          "org.apache.beam.sdk.values.TupleTagTest$AnotherClass#0", AnotherClass.anotherTag.getId());
    }
  
    private TupleTag<Object> createNonstaticTupleTag() {
      return new TupleTag<>();
    }
  
    @Test
    public void testNonstaticTupleTag() {
      assertNotEquals(new TupleTag<>().getId(), new TupleTag<>().getId());
      assertNotEquals(createNonstaticTupleTag(), createNonstaticTupleTag());
  
      TupleTag<Object> tag = createNonstaticTupleTag();
  
      // Check that the name is derived from the method it is created in.
      assertThat(
          Iterables.get(Splitter.on('#').split(tag.getId()), 0),
          startsWith("org.apache.beam.sdk.values.TupleTagTest.createNonstaticTupleTag"));
  
      // Check that after the name there is a ':' followed by a line number, and just make
      // sure the line number is big enough to be reasonable, so superficial changes don't break
      // the test.
      assertThat(
          Integer.parseInt(
              Iterables.get(
                  Splitter.on(':').split(Iterables.get(Splitter.on('#').split(tag.getId()), 0)), 1)),
          greaterThan(15));
    }
  }
  