user/test/com/google/gwt/emultest/java/lang/ObjectTest.java

/*
 * Copyright 2008 Google Inc.
 * 
 * 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.gwt.emultest.java.lang;

import com.google.gwt.junit.client.GWTTestCase;

/**
 * TODO: document me.
 */
public class ObjectTest extends GWTTestCase {
  public String getModuleName() {
    return "com.google.gwt.emultest.EmulSuite";
  }

  /*
   * Test method for 'java.lang.Object.hashCode()'
   */
  public void testHashCode() {
    Object obj1 = new Object();
    assertEquals(obj1.hashCode(), obj1.hashCode());

    Object obj2 = new Object();
    assertEquals(obj2.hashCode(), obj2.hashCode());
  }

  /**
   * Tests that 'java.lang.Object.typeId' does not shadow a local field.
   */
  public void testTypeIdShadow() {
    // arbitrary number
    final int typeId = -824107554;
    Object obj = new Object() {
      public int hashCode() {
        return typeId;
      }
    };
    assertEquals(typeId, obj.hashCode());
  }

  /**
   * Tests that 'java.lang.Object.typeMarker' does not shadow a local field.
   */
  public void testTypeMarkerShadow() {
    final Object typeMarker = new Object();
    class TestClass {
      public Object getTypeMarker() {
        return typeMarker;
      }
    }
    TestClass test = new TestClass();
    assertEquals(typeMarker, test.getTypeMarker());
  }
}