93 lines
2.6 KiB
Java
93 lines
2.6 KiB
Java
/*
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* Copyright (C) 2006 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.reflect;
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import com.google.common.testing.NullPointerTester;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.Method;
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import java.util.Map;
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import junit.framework.TestCase;
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/** Tests for {@link Reflection} */
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public class ReflectionTest extends TestCase {
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public void testGetPackageName() throws Exception {
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assertEquals("java.lang", Reflection.getPackageName(Iterable.class));
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assertEquals("java", Reflection.getPackageName("java.MyType"));
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assertEquals("java.lang", Reflection.getPackageName(Iterable.class.getName()));
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assertEquals("", Reflection.getPackageName("NoPackage"));
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assertEquals("java.util", Reflection.getPackageName(Map.Entry.class));
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}
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public void testNewProxy() throws Exception {
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Runnable runnable = Reflection.newProxy(Runnable.class, X_RETURNER);
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assertEquals("x", runnable.toString());
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}
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public void testNewProxyCantWorkOnAClass() throws Exception {
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try {
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Reflection.newProxy(Object.class, X_RETURNER);
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fail();
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} catch (IllegalArgumentException expected) {
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}
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}
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private static final InvocationHandler X_RETURNER =
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new InvocationHandler() {
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@Override
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
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return "x";
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}
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};
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private static int classesInitialized = 0;
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private static class A {
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static {
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++classesInitialized;
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}
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}
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private static class B {
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static {
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++classesInitialized;
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}
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}
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private static class C {
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static {
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++classesInitialized;
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}
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}
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public void testInitialize() {
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assertEquals("This test can't be included twice in the same suite.", 0, classesInitialized);
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Reflection.initialize(A.class);
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assertEquals(1, classesInitialized);
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Reflection.initialize(
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A.class, // Already initialized (above)
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B.class, C.class);
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assertEquals(3, classesInitialized);
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}
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public void testNullPointers() {
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new NullPointerTester().testAllPublicStaticMethods(Reflection.class);
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}
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}
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