17dd252788645e940eada959bdde927426e2531c9Paul Duffin/* 27dd252788645e940eada959bdde927426e2531c9Paul Duffin * Copyright (C) 2006 The Guava Authors 37dd252788645e940eada959bdde927426e2531c9Paul Duffin * 47dd252788645e940eada959bdde927426e2531c9Paul Duffin * Licensed under the Apache License, Version 2.0 (the "License"); 57dd252788645e940eada959bdde927426e2531c9Paul Duffin * you may not use this file except in compliance with the License. 67dd252788645e940eada959bdde927426e2531c9Paul Duffin * You may obtain a copy of the License at 77dd252788645e940eada959bdde927426e2531c9Paul Duffin * 87dd252788645e940eada959bdde927426e2531c9Paul Duffin * http://www.apache.org/licenses/LICENSE-2.0 97dd252788645e940eada959bdde927426e2531c9Paul Duffin * 107dd252788645e940eada959bdde927426e2531c9Paul Duffin * Unless required by applicable law or agreed to in writing, software 117dd252788645e940eada959bdde927426e2531c9Paul Duffin * distributed under the License is distributed on an "AS IS" BASIS, 127dd252788645e940eada959bdde927426e2531c9Paul Duffin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 137dd252788645e940eada959bdde927426e2531c9Paul Duffin * See the License for the specific language governing permissions and 147dd252788645e940eada959bdde927426e2531c9Paul Duffin * limitations under the License. 157dd252788645e940eada959bdde927426e2531c9Paul Duffin */ 167dd252788645e940eada959bdde927426e2531c9Paul Duffin 177dd252788645e940eada959bdde927426e2531c9Paul Duffinpackage com.google.common.reflect; 187dd252788645e940eada959bdde927426e2531c9Paul Duffin 197dd252788645e940eada959bdde927426e2531c9Paul Duffinimport com.google.common.testing.NullPointerTester; 207dd252788645e940eada959bdde927426e2531c9Paul Duffin 210888a09821a98ac0680fad765217302858e70fa4Paul Duffinimport junit.framework.TestCase; 220888a09821a98ac0680fad765217302858e70fa4Paul Duffin 237dd252788645e940eada959bdde927426e2531c9Paul Duffinimport java.lang.reflect.InvocationHandler; 247dd252788645e940eada959bdde927426e2531c9Paul Duffinimport java.lang.reflect.Method; 257dd252788645e940eada959bdde927426e2531c9Paul Duffinimport java.util.Map; 267dd252788645e940eada959bdde927426e2531c9Paul Duffin 277dd252788645e940eada959bdde927426e2531c9Paul Duffin/** Tests for {@link Reflection} */ 287dd252788645e940eada959bdde927426e2531c9Paul Duffinpublic class ReflectionTest extends TestCase { 297dd252788645e940eada959bdde927426e2531c9Paul Duffin 307dd252788645e940eada959bdde927426e2531c9Paul Duffin public void testGetPackageName() throws Exception { 317dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals("java.lang", Reflection.getPackageName(Iterable.class)); 327dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals("java", Reflection.getPackageName("java.MyType")); 337dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals("java.lang", Reflection.getPackageName(Iterable.class.getName())); 347dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals("", Reflection.getPackageName("NoPackage")); 357dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals("java.util", Reflection.getPackageName(Map.Entry.class)); 367dd252788645e940eada959bdde927426e2531c9Paul Duffin } 377dd252788645e940eada959bdde927426e2531c9Paul Duffin 387dd252788645e940eada959bdde927426e2531c9Paul Duffin public void testNewProxy() throws Exception { 397dd252788645e940eada959bdde927426e2531c9Paul Duffin Runnable runnable = Reflection.newProxy(Runnable.class, X_RETURNER); 407dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals("x", runnable.toString()); 417dd252788645e940eada959bdde927426e2531c9Paul Duffin } 427dd252788645e940eada959bdde927426e2531c9Paul Duffin 437dd252788645e940eada959bdde927426e2531c9Paul Duffin public void testNewProxyCantWorkOnAClass() throws Exception { 447dd252788645e940eada959bdde927426e2531c9Paul Duffin try { 457dd252788645e940eada959bdde927426e2531c9Paul Duffin Reflection.newProxy(Object.class, X_RETURNER); 467dd252788645e940eada959bdde927426e2531c9Paul Duffin fail(); 477dd252788645e940eada959bdde927426e2531c9Paul Duffin } catch (IllegalArgumentException expected) { 487dd252788645e940eada959bdde927426e2531c9Paul Duffin } 497dd252788645e940eada959bdde927426e2531c9Paul Duffin } 507dd252788645e940eada959bdde927426e2531c9Paul Duffin 517dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final InvocationHandler X_RETURNER = new InvocationHandler() { 527dd252788645e940eada959bdde927426e2531c9Paul Duffin @Override 537dd252788645e940eada959bdde927426e2531c9Paul Duffin public Object invoke(Object proxy, Method method, Object[] args) 547dd252788645e940eada959bdde927426e2531c9Paul Duffin throws Throwable { 557dd252788645e940eada959bdde927426e2531c9Paul Duffin return "x"; 567dd252788645e940eada959bdde927426e2531c9Paul Duffin } 577dd252788645e940eada959bdde927426e2531c9Paul Duffin }; 587dd252788645e940eada959bdde927426e2531c9Paul Duffin 597dd252788645e940eada959bdde927426e2531c9Paul Duffin private static int classesInitialized = 0; 607dd252788645e940eada959bdde927426e2531c9Paul Duffin private static class A { 617dd252788645e940eada959bdde927426e2531c9Paul Duffin static { 627dd252788645e940eada959bdde927426e2531c9Paul Duffin ++classesInitialized; 637dd252788645e940eada959bdde927426e2531c9Paul Duffin } 647dd252788645e940eada959bdde927426e2531c9Paul Duffin } 657dd252788645e940eada959bdde927426e2531c9Paul Duffin private static class B { 667dd252788645e940eada959bdde927426e2531c9Paul Duffin static { 677dd252788645e940eada959bdde927426e2531c9Paul Duffin ++classesInitialized; 687dd252788645e940eada959bdde927426e2531c9Paul Duffin } 697dd252788645e940eada959bdde927426e2531c9Paul Duffin } 707dd252788645e940eada959bdde927426e2531c9Paul Duffin private static class C { 717dd252788645e940eada959bdde927426e2531c9Paul Duffin static { 727dd252788645e940eada959bdde927426e2531c9Paul Duffin ++classesInitialized; 737dd252788645e940eada959bdde927426e2531c9Paul Duffin } 747dd252788645e940eada959bdde927426e2531c9Paul Duffin } 757dd252788645e940eada959bdde927426e2531c9Paul Duffin 767dd252788645e940eada959bdde927426e2531c9Paul Duffin public void testInitialize() { 777dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals("This test can't be included twice in the same suite.", 0, classesInitialized); 787dd252788645e940eada959bdde927426e2531c9Paul Duffin 797dd252788645e940eada959bdde927426e2531c9Paul Duffin Reflection.initialize(A.class); 807dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals(1, classesInitialized); 817dd252788645e940eada959bdde927426e2531c9Paul Duffin 827dd252788645e940eada959bdde927426e2531c9Paul Duffin Reflection.initialize( 837dd252788645e940eada959bdde927426e2531c9Paul Duffin A.class, // Already initialized (above) 847dd252788645e940eada959bdde927426e2531c9Paul Duffin B.class, 857dd252788645e940eada959bdde927426e2531c9Paul Duffin C.class); 867dd252788645e940eada959bdde927426e2531c9Paul Duffin assertEquals(3, classesInitialized); 877dd252788645e940eada959bdde927426e2531c9Paul Duffin } 887dd252788645e940eada959bdde927426e2531c9Paul Duffin 897dd252788645e940eada959bdde927426e2531c9Paul Duffin public void testNullPointers() { 907dd252788645e940eada959bdde927426e2531c9Paul Duffin new NullPointerTester().testAllPublicStaticMethods(Reflection.class); 917dd252788645e940eada959bdde927426e2531c9Paul Duffin } 927dd252788645e940eada959bdde927426e2531c9Paul Duffin} 93