/*
    * Copyright (C) 2012 The Guava Authors
    *
    * Licensed 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 com.google.common.util.concurrent;
  
  import com.google.common.collect.ForwardingObject;
  
  import junit.framework.TestCase;
  
  /**
   * Tests for {@link ForwardingObjectTester}.
   *
   * @author Ben Yu
   */
  public class ForwardingObjectTesterTest extends TestCase {
  
    public void testFailsToForward() {
      try {
        ForwardingObjectTester.testForwardingObject(FailToForward.class);
      } catch (AssertionError expected) {
        return;
      }
      fail("Should have thrown");
    }
  
    public void testSuccessfulForwarding() {
      ForwardingObjectTester.testForwardingObject(ForwardToDelegate.class);
    }
  
    private static abstract class FailToForward extends ForwardingObject implements Runnable {
      @Override public void run() {}
    }
  
    private static abstract class ForwardToDelegate extends ForwardingObject implements Runnable {
      @Override public void run() {
        delegate().run();
      }
      @Override protected abstract Runnable delegate();
    }
  }