The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.core; |
| 18 | |
| 19 | import android.test.suitebuilder.annotation.MediumTest; |
| 20 | import android.test.suitebuilder.annotation.SmallTest; |
| 21 | import android.widget.Button; |
| 22 | import junit.framework.TestCase; |
| 23 | |
| 24 | import java.lang.reflect.Constructor; |
| 25 | import java.lang.reflect.Field; |
| 26 | import java.lang.reflect.Method; |
| 27 | import java.lang.reflect.Modifier; |
| 28 | import java.util.HashSet; |
| 29 | import java.util.Set; |
| 30 | |
| 31 | |
| 32 | class ClassWithPrivateConstructor { |
| 33 | private ClassWithPrivateConstructor() { |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | public class ClassTest extends TestCase { |
| 38 | |
| 39 | @SmallTest |
| 40 | public void testClass() throws Exception { |
| 41 | // Now, never mind the fact that most of this stuff has to work |
| 42 | // for the test harness to get this far.... |
| 43 | |
| 44 | //System.out.println("Class.forName()"); |
| 45 | Class helloClass = Class.forName(ClassTest.class.getName()); |
| 46 | |
| 47 | //System.out.println("Class.newInstance()"); |
| 48 | Object instance = helloClass.newInstance(); |
| 49 | assertNotNull(instance); |
| 50 | |
| 51 | //System.out.println("Class.forName() nonexisting class"); |
| 52 | try { |
| 53 | Class.forName("this.class.DoesNotExist"); |
| 54 | fail("unexpected success"); |
| 55 | } catch (ClassNotFoundException ex) { |
| 56 | // expected |
| 57 | } |
| 58 | |
| 59 | //System.out.println("Class.newInstance() private constructor"); |
| 60 | try { |
| 61 | Class.forName("android.core.ClassWithPrivateConstructor").newInstance(); |
| 62 | fail("unexpected success"); |
| 63 | } catch (IllegalAccessException ex) { |
| 64 | // this is expected |
| 65 | } |
| 66 | |
| 67 | //System.out.println("Class.getDeclaredMethod()"); |
| 68 | |
| 69 | Method method = helloClass.getDeclaredMethod("method", (Class[]) null); |
| 70 | |
| 71 | method.invoke(new ClassTest(), (Object[]) null); |
| 72 | |
| 73 | //System.out.println("Class.getDeclaredMethod() w/ args"); |
| 74 | |
| 75 | method = helloClass.getDeclaredMethod("methodWithArgs", Object.class); |
| 76 | |
| 77 | Object invokeArgs[] = new Object[1]; |
| 78 | invokeArgs[0] = "Hello"; |
| 79 | Object ret = method.invoke(new ClassTest(), invokeArgs); |
| 80 | assertEquals(ret, invokeArgs[0]); |
| 81 | |
| 82 | //System.out.println("Class.getDeclaredMethod() -- private"); |
| 83 | |
| 84 | method = helloClass.getDeclaredMethod("privateMethod", (Class[]) null); |
| 85 | |
| 86 | method.invoke(new ClassTest(), (Object[]) null); |
| 87 | //fail("unexpected success"); |
| 88 | // TODO: I think this actually *should* succeed, because the |
| 89 | // call to the private method is being made from the same class. |
| 90 | // This needs to be replaced with a private call to a different |
| 91 | // class. |
| 92 | |
| 93 | //System.out.println("Class.getSuperclass"); |
| 94 | Class objectClass = Class.forName("java.lang.Object"); |
| 95 | assertEquals(helloClass.getSuperclass().getSuperclass().getSuperclass(), objectClass); |
| 96 | |
| 97 | //System.out.println("Class.isAssignableFrom"); |
| 98 | assertTrue(objectClass.isAssignableFrom(helloClass)); |
| 99 | assertFalse(helloClass.isAssignableFrom(objectClass)); |
| 100 | |
| 101 | //System.out.println("Class.getConstructor"); |
| 102 | |
| 103 | Constructor constructor = helloClass.getConstructor((Class[]) null); |
| 104 | assertNotNull(constructor); |
| 105 | |
| 106 | //System.out.println("Class.getModifiers"); |
| 107 | |
| 108 | assertTrue(Modifier.isPublic(helloClass.getModifiers())); |
| 109 | //System.out.println("Modifiers: " + Modifier.toString(helloClass.getModifiers())); |
| 110 | |
| 111 | //System.out.println("Class.getMethod"); |
| 112 | |
| 113 | helloClass.getMethod("method", (Class[]) null); |
| 114 | |
| 115 | try { |
| 116 | Class[] argTypes = new Class[1]; |
| 117 | argTypes[0] = helloClass; |
| 118 | helloClass.getMethod("method", argTypes); |
| 119 | fail("unexpected success"); |
| 120 | } catch (NoSuchMethodException ex) { |
| 121 | // exception expected |
| 122 | } |
| 123 | |
| 124 | // Test for public tracker issue 14 |
| 125 | SimpleClass obj = new SimpleClass(); |
| 126 | Field field = obj.getClass().getDeclaredField("str"); |
| 127 | field.set(obj, null); |
| 128 | } |
| 129 | |
| 130 | public class SimpleClass { |
| 131 | public String str; |
| 132 | } |
| 133 | |
| 134 | public Object methodWithArgs(Object o) { |
| 135 | return o; |
| 136 | } |
| 137 | |
| 138 | boolean methodInvoked; |
| 139 | |
| 140 | public void method() { |
| 141 | methodInvoked = true; |
| 142 | } |
| 143 | |
| 144 | boolean privateMethodInvoked; |
| 145 | |
| 146 | public void privateMethod() { |
| 147 | privateMethodInvoked = true; |
| 148 | } |
| 149 | |
| 150 | // Regression for 1018067: Class.getMethods() returns the same method over |
| 151 | // and over again from all base classes |
| 152 | @MediumTest |
| 153 | public void testClassGetMethodsNoDupes() { |
| 154 | Method[] methods = Button.class.getMethods(); |
| 155 | Set<String> set = new HashSet<String>(); |
| 156 | |
| 157 | for (int i = 0; i < methods.length; i++) { |
| 158 | String signature = methods[i].toString(); |
| 159 | |
| 160 | int par = signature.indexOf('('); |
| 161 | int dot = signature.lastIndexOf('.', par); |
| 162 | |
| 163 | signature = signature.substring(dot + 1); |
| 164 | |
| 165 | assertFalse("Duplicate " + signature, set.contains(signature)); |
| 166 | set.add(signature); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | interface MyInterface { |
| 171 | void foo(); |
| 172 | } |
| 173 | |
| 174 | interface MyOtherInterface extends MyInterface { |
| 175 | void bar(); |
| 176 | } |
| 177 | |
| 178 | abstract class MyClass implements MyOtherInterface { |
| 179 | public void gabba() { |
| 180 | } |
| 181 | |
| 182 | public void hey() { |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | // Check if we also reflect methods from interfaces |
| 187 | @SmallTest |
| 188 | public void testGetMethodsInterfaces() { |
| 189 | Method[] methods = MyInterface.class.getMethods(); |
| 190 | assertTrue("Interface method must be there", hasMethod(methods, ".foo(")); |
| 191 | |
| 192 | methods = MyOtherInterface.class.getMethods(); |
| 193 | assertTrue("Interface method must be there", hasMethod(methods, ".foo(")); |
| 194 | assertTrue("Interface method must be there", hasMethod(methods, ".bar(")); |
| 195 | |
| 196 | methods = MyClass.class.getMethods(); |
| 197 | assertTrue("Interface method must be there", hasMethod(methods, ".foo(")); |
| 198 | assertTrue("Interface method must be there", hasMethod(methods, ".bar(")); |
| 199 | |
| 200 | assertTrue("Declared method must be there", hasMethod(methods, ".gabba(")); |
| 201 | assertTrue("Declared method must be there", hasMethod(methods, ".hey(")); |
| 202 | |
| 203 | assertTrue("Inherited method must be there", hasMethod(methods, ".toString(")); |
| 204 | } |
| 205 | |
| 206 | private boolean hasMethod(Method[] methods, String signature) { |
| 207 | for (int i = 0; i < methods.length; i++) { |
| 208 | if (methods[i].toString().contains(signature)) { |
| 209 | return true; |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | return false; |
| 214 | } |
| 215 | |
| 216 | // Test for Class.getPackage(); |
| 217 | @SmallTest |
| 218 | public void testClassGetPackage() { |
| 219 | assertNotNull("Package must be non-null", getClass().getPackage()); |
| 220 | assertEquals("Package must have expected name", "android.core", getClass().getPackage().getName()); |
| 221 | assertEquals("Package must have expected title", "Unknown", getClass().getPackage().getSpecificationTitle()); |
| 222 | |
| 223 | Package p = java.lang.Object.class.getPackage(); |
| 224 | assertNotNull("Package must be non-null", p); |
| 225 | assertEquals("Package must have expected name", "java.lang", p.getName()); |
| 226 | assertSame("Package object must be same for each call", p, java.lang.Object.class.getPackage()); |
| 227 | } |
| 228 | |
| 229 | // Regression test for #1123708: Problem with getCanonicalName(), |
| 230 | // getSimpleName(), and getPackage(). |
| 231 | // |
| 232 | // A couple of interesting cases need to be checked: Top-level classes, |
| 233 | // member classes, local classes, and anonymous classes. Also, boundary |
| 234 | // cases with '$' in the class names are checked, since the '$' is used |
| 235 | // as the separator between outer and inner class, so this might lead |
| 236 | // to problems (it did in the previous implementation). |
| 237 | // |
| 238 | // Caution: Adding local or anonymous classes elsewhere in this |
| 239 | // file might affect the test. |
| 240 | private class MemberClass { |
| 241 | // This space intentionally left blank. |
| 242 | } |
| 243 | |
| 244 | private class Mi$o$oup { |
| 245 | // This space intentionally left blank. |
| 246 | } |
| 247 | |
| 248 | @SmallTest |
| 249 | public void testVariousClassNames() { |
| 250 | Class<?> clazz = this.getClass(); |
| 251 | String pkg = (clazz.getPackage() == null ? "" : clazz.getPackage().getName() + "."); |
| 252 | |
| 253 | // Simple, top-level class |
| 254 | |
| 255 | assertEquals("Top-level class name must be correct", pkg + "ClassTest", clazz.getName()); |
| 256 | assertEquals("Top-level class simple name must be correct", "ClassTest", clazz.getSimpleName()); |
| 257 | assertEquals("Top-level class canonical name must be correct", pkg + "ClassTest", clazz.getCanonicalName()); |
| 258 | |
| 259 | clazz = MemberClass.class; |
| 260 | |
| 261 | assertEquals("Member class name must be correct", pkg + "ClassTest$MemberClass", clazz.getName()); |
| 262 | assertEquals("Member class simple name must be correct", "MemberClass", clazz.getSimpleName()); |
| 263 | assertEquals("Member class canonical name must be correct", pkg + "ClassTest.MemberClass", clazz.getCanonicalName()); |
| 264 | |
| 265 | class LocalClass { |
| 266 | // This space intentionally left blank. |
| 267 | } |
| 268 | |
| 269 | clazz = LocalClass.class; |
| 270 | |
| 271 | assertEquals("Local class name must be correct", pkg + "ClassTest$1LocalClass", clazz.getName()); |
| 272 | assertEquals("Local class simple name must be correct", "LocalClass", clazz.getSimpleName()); |
| 273 | assertNull("Local class canonical name must be null", clazz.getCanonicalName()); |
| 274 | |
| 275 | clazz = new Object() { }.getClass(); |
| 276 | |
| 277 | assertEquals("Anonymous class name must be correct", pkg + "ClassTest$1", clazz.getName()); |
| 278 | assertEquals("Anonymous class simple name must be empty", "", clazz.getSimpleName()); |
| 279 | assertNull("Anonymous class canonical name must be null", clazz.getCanonicalName()); |
| 280 | |
| 281 | // Weird special cases with dollar in name. |
| 282 | |
| 283 | clazz = Mou$$aka.class; |
| 284 | |
| 285 | assertEquals("Top-level class name must be correct", pkg + "Mou$$aka", clazz.getName()); |
| 286 | assertEquals("Top-level class simple name must be correct", "Mou$$aka", clazz.getSimpleName()); |
| 287 | assertEquals("Top-level class canonical name must be correct", pkg + "Mou$$aka", clazz.getCanonicalName()); |
| 288 | |
| 289 | clazz = Mi$o$oup.class; |
| 290 | |
| 291 | assertEquals("Member class name must be correct", pkg + "ClassTest$Mi$o$oup", clazz.getName()); |
| 292 | assertEquals("Member class simple name must be correct", "Mi$o$oup", clazz.getSimpleName()); |
| 293 | assertEquals("Member class canonical name must be correct", pkg + "ClassTest.Mi$o$oup", clazz.getCanonicalName()); |
| 294 | |
| 295 | class Ma$hedPotatoe$ { |
| 296 | // This space intentionally left blank. |
| 297 | } |
| 298 | |
| 299 | clazz = Ma$hedPotatoe$.class; |
| 300 | |
| 301 | assertEquals("Member class name must be correct", pkg + "ClassTest$1Ma$hedPotatoe$", clazz.getName()); |
| 302 | assertEquals("Member class simple name must be correct", "Ma$hedPotatoe$", clazz.getSimpleName()); |
| 303 | assertNull("Member class canonical name must be null", clazz.getCanonicalName()); |
| 304 | } |
| 305 | |
| 306 | @SmallTest |
| 307 | public void testLocalMemberClass() { |
| 308 | Class<?> clazz = this.getClass(); |
| 309 | |
| 310 | assertFalse("Class must not be member", clazz.isMemberClass()); |
| 311 | assertFalse("Class must not be local", clazz.isLocalClass()); |
| 312 | |
| 313 | clazz = MemberClass.class; |
| 314 | |
| 315 | assertTrue("Class must be member", clazz.isMemberClass()); |
| 316 | assertFalse("Class must not be local", clazz.isLocalClass()); |
| 317 | |
| 318 | class OtherLocalClass { |
| 319 | // This space intentionally left blank. |
| 320 | } |
| 321 | |
| 322 | clazz = OtherLocalClass.class; |
| 323 | |
| 324 | assertFalse("Class must not be member", clazz.isMemberClass()); |
| 325 | assertTrue("Class must be local", clazz.isLocalClass()); |
| 326 | |
| 327 | clazz = new Object() { }.getClass(); |
| 328 | |
| 329 | assertFalse("Class must not be member", clazz.isMemberClass()); |
| 330 | assertFalse("Class must not be local", clazz.isLocalClass()); |
| 331 | } |
| 332 | |
| 333 | } |
| 334 | |
| 335 | class Mou$$aka { |
| 336 | // This space intentionally left blank. |
| 337 | } |