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/*
* 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.reflect;
import com.google.common.testing.EqualsTester;
import com.google.common.testing.NullPointerTester;
import junit.framework.TestCase;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Constructor;
/**
* Unit tests of {@link Element}.
*
* @author Ben Yu
*/
public class ElementTest extends TestCase {
public void testPrivateField() throws Exception {
Element element = A.field("privateField");
assertTrue(element.isPrivate());
assertFalse(element.isAbstract());
assertFalse(element.isPackagePrivate());
assertFalse(element.isProtected());
assertFalse(element.isPublic());
assertFalse(element.isFinal());
assertFalse(element.isStatic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testPackagePrivateField() throws Exception {
Element element = A.field("packagePrivateField");
assertFalse(element.isPrivate());
assertTrue(element.isPackagePrivate());
assertFalse(element.isProtected());
assertFalse(element.isPublic());
assertFalse(element.isFinal());
assertFalse(element.isStatic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testProtectedField() throws Exception {
Element element = A.field("protectedField");
assertFalse(element.isPrivate());
assertFalse(element.isPackagePrivate());
assertTrue(element.isProtected());
assertFalse(element.isPublic());
assertFalse(element.isFinal());
assertFalse(element.isStatic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testPublicField() throws Exception {
Element element = A.field("publicField");
assertFalse(element.isPrivate());
assertFalse(element.isPackagePrivate());
assertFalse(element.isProtected());
assertTrue(element.isPublic());
assertFalse(element.isFinal());
assertFalse(element.isStatic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testFinalField() throws Exception {
Element element = A.field("finalField");
assertTrue(element.isFinal());
assertFalse(element.isStatic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testStaticField() throws Exception {
Element element = A.field("staticField");
assertTrue(element.isStatic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testVolatileField() throws Exception {
Element element = A.field("volatileField");
assertTrue(element.isVolatile());
}
public void testTransientField() throws Exception {
Element element = A.field("transientField");
assertTrue(element.isTransient());
}
public void testConstructor() throws Exception {
Element element = A.constructor();
assertTrue(element.isPublic());
assertFalse(element.isPackagePrivate());
assertFalse(element.isAbstract());
assertFalse(element.isStatic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testAbstractMethod() throws Exception {
Element element = A.method("abstractMethod");
assertTrue(element.isPackagePrivate());
assertTrue(element.isAbstract());
assertFalse(element.isFinal());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testOverridableMethod() throws Exception {
Element element = A.method("overridableMethod");
assertTrue(element.isPackagePrivate());
assertFalse(element.isAbstract());
assertFalse(element.isFinal());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testPrivateMethod() throws Exception {
Element element = A.method("privateMethod");
assertFalse(element.isAbstract());
assertTrue(element.isPrivate());
assertFalse(element.isPackagePrivate());
assertFalse(element.isPublic());
assertFalse(element.isProtected());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testProtectedMethod() throws Exception {
Element element = A.method("protectedMethod");
assertFalse(element.isAbstract());
assertFalse(element.isPrivate());
assertFalse(element.isPackagePrivate());
assertFalse(element.isFinal());
assertFalse(element.isPublic());
assertTrue(element.isProtected());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testFinalMethod() throws Exception {
Element element = A.method("publicFinalMethod");
assertFalse(element.isAbstract());
assertFalse(element.isPrivate());
assertTrue(element.isFinal());
assertTrue(element.isPublic());
assertTrue(element.isAnnotationPresent(Tested.class));
}
public void testNativeMethod() throws Exception {
Element element = A.method("nativeMethod");
assertTrue(element.isNative());
assertTrue(element.isPackagePrivate());
}
public void testSynchronizedMethod() throws Exception {
Element element = A.method("synchronizedMethod");
assertTrue(element.isSynchronized());
}
public void testUnannotatedMethod() throws Exception {
Element element = A.method("notAnnotatedMethod");
assertFalse(element.isAnnotationPresent(Tested.class));
}
public void testEquals() throws Exception {
new EqualsTester()
.addEqualityGroup(A.field("privateField"), A.field("privateField"))
.addEqualityGroup(A.field("publicField"))
.addEqualityGroup(A.constructor(), A.constructor())
.addEqualityGroup(A.method("privateMethod"), A.method("privateMethod"))
.addEqualityGroup(A.method("publicFinalMethod"))
.testEquals();
}
public void testNulls() {
new NullPointerTester()
.testAllPublicStaticMethods(Element.class);
}
@Retention(RetentionPolicy.RUNTIME)
private @interface Tested {}
private static abstract class A {
@Tested private boolean privateField;
@Tested int packagePrivateField;
@Tested protected int protectedField;
@Tested public String publicField;
@Tested private static Iterable<String> staticField;
@Tested private final Object finalField;
private volatile char volatileField;
private transient long transientField;
@Tested public A(Object finalField) {
this.finalField = finalField;
}
@Tested abstract void abstractMethod();
@Tested void overridableMethod() {}
@Tested protected void protectedMethod() {}
@Tested private void privateMethod() {}
@Tested public final void publicFinalMethod() {}
void notAnnotatedMethod() {}
static Element field(String name) throws Exception {
Element element = new Element(A.class.getDeclaredField(name));
assertEquals(name, element.getName());
assertEquals(A.class, element.getDeclaringClass());
return element;
}
static Element constructor() throws Exception {
Constructor<?> constructor = A.class.getDeclaredConstructor(Object.class);
Element element = new Element(constructor);
assertEquals(constructor.getName(), element.getName());
assertEquals(A.class, element.getDeclaringClass());
return element;
}
static Element method(String name, Class<?>... parameterTypes) throws Exception {
Element element = new Element(A.class.getDeclaredMethod(name, parameterTypes));
assertEquals(name, element.getName());
assertEquals(A.class, element.getDeclaringClass());
return element;
}
native void nativeMethod();
synchronized void synchronizedMethod() {}
}
}
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