IntrospectorTestCase.java

/*
 * Copyright 2013 eXo Platform SAS
 *
 * 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 juzu.impl.common;

import org.junit.Test;

import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import static junit.framework.Assert.*;

/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
public class IntrospectorTestCase {

  @Test
  public void testFoo() {
    Type resolved = Introspector.resolve(ThreadLocal.class, ThreadLocal.class, 0);
    assertTrue(resolved instanceof TypeVariable);
    TypeVariable tv = (TypeVariable)resolved;
    assertEquals(ThreadLocal.class, tv.getGenericDeclaration());
    assertEquals(Object.class, Introspector.resolveToClass(ThreadLocal.class, ThreadLocal.class, 0));
  }

  @Test
  public void testBar() {
    class A extends ThreadLocal<String> {}
    Type resolved = Introspector.resolve(A.class, ThreadLocal.class, 0);
    assertEquals(String.class, resolved);
    assertEquals(String.class, Introspector.resolveToClass(A.class, ThreadLocal.class, 0));
  }

  @Test
  public void testZoo() {
    class A extends ThreadLocal {}
    TypeVariable resolved = (TypeVariable)Introspector.resolve(A.class, ThreadLocal.class, 0);
    assertEquals("T", resolved.getName());
    assertEquals(Collections.<Type>singletonList(Object.class), Arrays.asList(resolved.getBounds()));
    assertEquals(Object.class, Introspector.resolveToClass(A.class, ThreadLocal.class, 0));
  }

  @Test
  public void testJuu() {
    class A extends InheritableThreadLocal<String> {}
    Type resolved = Introspector.resolve(A.class, ThreadLocal.class, 0);
    assertEquals(String.class, resolved);
    assertEquals(String.class, Introspector.resolveToClass(A.class, ThreadLocal.class, 0));
  }

  @Test
  public void testDaa() {
    Type resolved = Introspector.resolve(InheritableThreadLocal.class, ThreadLocal.class, 0);
    assertTrue(resolved instanceof TypeVariable);
    TypeVariable tv = (TypeVariable)resolved;
    assertEquals(InheritableThreadLocal.class, tv.getGenericDeclaration());
    assertEquals(Object.class, Introspector.resolveToClass(InheritableThreadLocal.class, ThreadLocal.class, 0));
  }

  @Test
  public void testInstanceOf() {
    assertEquals(true, Introspector.instanceOf(String.class, "java.lang.String"));
    assertEquals(true, Introspector.instanceOf(ArrayList.class, "java.util.List"));
    assertEquals(true, Introspector.instanceOf(List.class, "java.util.List"));
    assertEquals(true, Introspector.instanceOf(ArrayList.class, "java.util.AbstractList"));
    assertEquals(true, Introspector.instanceOf(ArrayList.class, "java.util.AbstractCollection"));
    assertEquals(false, Introspector.instanceOf(String.class, "java.lang.Integer"));
  }

  @Test
  public void testInstanceOfList() {
    assertEquals(true, Introspector.instanceOf(String.class, Arrays.asList("java.lang.String", "java.lang.Integer")));
    assertEquals(true, Introspector.instanceOf(String.class, Arrays.asList("java.lang.Integer", "java.lang.String")));
    assertEquals(false, Introspector.instanceOf(String.class, Arrays.asList("java.lang.Boolean", "java.lang.Integer")));
  }
}