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Java example source code file (FieldAttributesTest.java)

This example Java source code file (FieldAttributesTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

exception, fieldattributes, fieldattributestest, foo, list, nullpointerexception, override, reflection, suppresswarnings, testcase, type, typetoken, util

The FieldAttributesTest.java Java example source code

/*
 * Copyright (C) 2009 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.gson;

import com.google.gson.reflect.TypeToken;

import junit.framework.TestCase;

import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
import java.util.List;

/**
 * Unit tests for the {@link FieldAttributes} class.
 *
 * @author Inderjeet Singh
 * @author Joel Leitch
 */
public class FieldAttributesTest extends TestCase {
  private FieldAttributes fieldAttributes;

  @Override
  protected void setUp() throws Exception {
    super.setUp();
    fieldAttributes = new FieldAttributes(Foo.class.getField("bar"));
  }

  public void testNullField() throws Exception {
    try {
      new FieldAttributes(null);
      fail("Field parameter can not be null");
    } catch (NullPointerException expected) { }
  }

  public void testDeclaringClass() throws Exception {
    assertEquals(Foo.class, fieldAttributes.getDeclaringClass());
  }

  public void testModifiers() throws Exception {
    assertFalse(fieldAttributes.hasModifier(Modifier.STATIC));
    assertFalse(fieldAttributes.hasModifier(Modifier.FINAL));
    assertFalse(fieldAttributes.hasModifier(Modifier.ABSTRACT));
    assertFalse(fieldAttributes.hasModifier(Modifier.VOLATILE));
    assertFalse(fieldAttributes.hasModifier(Modifier.PROTECTED));

    assertTrue(fieldAttributes.hasModifier(Modifier.PUBLIC));
    assertTrue(fieldAttributes.hasModifier(Modifier.TRANSIENT));
  }

  public void testIsSynthetic() throws Exception {
    assertFalse(fieldAttributes.isSynthetic());
  }

  public void testName() throws Exception {
    assertEquals("bar", fieldAttributes.getName());
  }

  public void testDeclaredTypeAndClass() throws Exception {
    Type expectedType = new TypeToken<List() {}.getType();
    assertEquals(expectedType, fieldAttributes.getDeclaredType());
    assertEquals(List.class, fieldAttributes.getDeclaredClass());
  }

  private static class Foo {
    @SuppressWarnings("unused")
    public transient List<String> bar;
  }
}

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