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;
  
  import org.apache.beam.sdk.values.TupleTag;
  import org.hamcrest.Matchers;
  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;
  
  /** Tests of InstanceBuilder. */
  @RunWith(JUnit4.class)
  @SuppressWarnings({
    "rawtypes" // TODO(https://github.com/apache/beam/issues/20447)
  })
  public class InstanceBuilderTest {
  
    @Rule public ExpectedException expectedEx = ExpectedException.none();
  
    @SuppressWarnings("unused")
    private static TupleTag createTag(String id) {
      return new TupleTag(id);
    }
  
    @Test
    public void testFullNameLookup() throws Exception {
      TupleTag tag =
          InstanceBuilder.ofType(TupleTag.class)
              .fromClassName(InstanceBuilderTest.class.getName())
              .fromFactoryMethod("createTag")
              .withArg(String.class, "hello world!")
              .build();
  
      Assert.assertEquals("hello world!", tag.getId());
    }
  
    @Test
    public void testConstructor() throws Exception {
      TupleTag tag =
          InstanceBuilder.ofType(TupleTag.class).withArg(String.class, "hello world!").build();
  
      Assert.assertEquals("hello world!", tag.getId());
    }
  
    @Test
    public void testBadMethod() throws Exception {
      expectedEx.expect(RuntimeException.class);
      expectedEx.expectMessage(Matchers.containsString("Unable to find factory method"));
  
      InstanceBuilder.ofType(String.class)
          .fromClassName(InstanceBuilderTest.class.getName())
          .fromFactoryMethod("nonexistantFactoryMethod")
          .withArg(String.class, "hello")
          .withArg(String.class, " world!")
          .build();
    }
  
    @Test
    public void testBadArgs() throws Exception {
      expectedEx.expect(RuntimeException.class);
      expectedEx.expectMessage(Matchers.containsString("Unable to find factory method"));
  
      InstanceBuilder.ofType(TupleTag.class)
          .fromClassName(InstanceBuilderTest.class.getName())
          .fromFactoryMethod("createTag")
          .withArg(String.class, "hello")
          .withArg(Integer.class, 42)
          .build();
    }
  
    @Test
    public void testBadReturnType() throws Exception {
      expectedEx.expect(RuntimeException.class);
      expectedEx.expectMessage(Matchers.containsString("must be assignable to String"));
  
      InstanceBuilder.ofType(String.class)
          .fromClassName(InstanceBuilderTest.class.getName())
          .fromFactoryMethod("createTag")
          .withArg(String.class, "hello")
          .build();
    }
  
    @Test
    public void testWrongType() throws Exception {
      expectedEx.expect(RuntimeException.class);
      expectedEx.expectMessage(Matchers.containsString("must be assignable to TupleTag"));
  
      InstanceBuilder.ofType(TupleTag.class)
          .fromClassName(InstanceBuilderTest.class.getName())
          .build();
    }
  }
  