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/*
* Copyright (C) 2006 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.NullPointerTester;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.Map;
import junit.framework.TestCase;
/** Tests for {@link Reflection} */
public class ReflectionTest extends TestCase {
public void testGetPackageName() throws Exception {
assertEquals("java.lang", Reflection.getPackageName(Iterable.class));
assertEquals("java", Reflection.getPackageName("java.MyType"));
assertEquals("java.lang", Reflection.getPackageName(Iterable.class.getName()));
assertEquals("", Reflection.getPackageName("NoPackage"));
assertEquals("java.util", Reflection.getPackageName(Map.Entry.class));
}
public void testNewProxy() throws Exception {
Runnable runnable = Reflection.newProxy(Runnable.class, X_RETURNER);
assertEquals("x", runnable.toString());
}
public void testNewProxyCantWorkOnAClass() throws Exception {
try {
Reflection.newProxy(Object.class, X_RETURNER);
fail();
} catch (IllegalArgumentException expected) {
}
}
private static final InvocationHandler X_RETURNER =
new InvocationHandler() {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return "x";
}
};
private static int classesInitialized = 0;
private static class A {
static {
++classesInitialized;
}
}
private static class B {
static {
++classesInitialized;
}
}
private static class C {
static {
++classesInitialized;
}
}
public void testInitialize() {
assertEquals("This test can't be included twice in the same suite.", 0, classesInitialized);
Reflection.initialize(A.class);
assertEquals(1, classesInitialized);
Reflection.initialize(
A.class, // Already initialized (above)
B.class, C.class);
assertEquals(3, classesInitialized);
}
public void testNullPointers() {
new NullPointerTester().testAllPublicStaticMethods(Reflection.class);
}
}
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