1 /* 2 * Copyright (C) 2011 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 #include "object.h" 18 19 #include <stdint.h> 20 #include <stdio.h> 21 22 #include "array-inl.h" 23 #include "art_field-inl.h" 24 #include "asm_support.h" 25 #include "class-inl.h" 26 #include "class_linker.h" 27 #include "class_linker-inl.h" 28 #include "common_test.h" 29 #include "dex_file.h" 30 #include "entrypoints/entrypoint_utils.h" 31 #include "gc/accounting/card_table-inl.h" 32 #include "gc/heap.h" 33 #include "iftable-inl.h" 34 #include "art_method-inl.h" 35 #include "object-inl.h" 36 #include "object_array-inl.h" 37 #include "sirt_ref.h" 38 #include "UniquePtr.h" 39 40 namespace art { 41 namespace mirror { 42 43 class ObjectTest : public CommonTest { 44 protected: 45 void AssertString(int32_t expected_utf16_length, 46 const char* utf8_in, 47 const char* utf16_expected_le, 48 int32_t expected_hash) 49 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 50 UniquePtr<uint16_t[]> utf16_expected(new uint16_t[expected_utf16_length]); 51 for (int32_t i = 0; i < expected_utf16_length; i++) { 52 uint16_t ch = (((utf16_expected_le[i*2 + 0] & 0xff) << 8) | 53 ((utf16_expected_le[i*2 + 1] & 0xff) << 0)); 54 utf16_expected[i] = ch; 55 } 56 57 Thread* self = Thread::Current(); 58 SirtRef<String> string(self, String::AllocFromModifiedUtf8(self, expected_utf16_length, utf8_in)); 59 ASSERT_EQ(expected_utf16_length, string->GetLength()); 60 ASSERT_TRUE(string->GetCharArray() != NULL); 61 ASSERT_TRUE(string->GetCharArray()->GetData() != NULL); 62 // strlen is necessary because the 1-character string "\x00\x00" is interpreted as "" 63 ASSERT_TRUE(string->Equals(utf8_in) || (expected_utf16_length == 1 && strlen(utf8_in) == 0)); 64 ASSERT_TRUE(string->Equals(StringPiece(utf8_in)) || (expected_utf16_length == 1 && strlen(utf8_in) == 0)); 65 for (int32_t i = 0; i < expected_utf16_length; i++) { 66 EXPECT_EQ(utf16_expected[i], string->CharAt(i)); 67 } 68 EXPECT_EQ(expected_hash, string->GetHashCode()); 69 } 70 }; 71 72 // Keep the assembly code in sync 73 TEST_F(ObjectTest, AsmConstants) { 74 ASSERT_EQ(STRING_VALUE_OFFSET, String::ValueOffset().Int32Value()); 75 ASSERT_EQ(STRING_COUNT_OFFSET, String::CountOffset().Int32Value()); 76 ASSERT_EQ(STRING_OFFSET_OFFSET, String::OffsetOffset().Int32Value()); 77 ASSERT_EQ(STRING_DATA_OFFSET, Array::DataOffset(sizeof(uint16_t)).Int32Value()); 78 79 ASSERT_EQ(METHOD_CODE_OFFSET, ArtMethod::EntryPointFromCompiledCodeOffset().Int32Value()); 80 } 81 82 TEST_F(ObjectTest, IsInSamePackage) { 83 // Matches 84 EXPECT_TRUE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/Class;")); 85 EXPECT_TRUE(Class::IsInSamePackage("LFoo;", "LBar;")); 86 87 // Mismatches 88 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/io/File;")); 89 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/reflect/Method;")); 90 } 91 92 TEST_F(ObjectTest, Clone) { 93 ScopedObjectAccess soa(Thread::Current()); 94 SirtRef<ObjectArray<Object> > a1(soa.Self(), 95 class_linker_->AllocObjectArray<Object>(soa.Self(), 256)); 96 size_t s1 = a1->SizeOf(); 97 Object* clone = a1->Clone(soa.Self()); 98 EXPECT_EQ(s1, clone->SizeOf()); 99 EXPECT_TRUE(clone->GetClass() == a1->GetClass()); 100 } 101 102 TEST_F(ObjectTest, AllocObjectArray) { 103 ScopedObjectAccess soa(Thread::Current()); 104 SirtRef<ObjectArray<Object> > oa(soa.Self(), 105 class_linker_->AllocObjectArray<Object>(soa.Self(), 2)); 106 EXPECT_EQ(2, oa->GetLength()); 107 EXPECT_TRUE(oa->Get(0) == NULL); 108 EXPECT_TRUE(oa->Get(1) == NULL); 109 oa->Set(0, oa.get()); 110 EXPECT_TRUE(oa->Get(0) == oa.get()); 111 EXPECT_TRUE(oa->Get(1) == NULL); 112 oa->Set(1, oa.get()); 113 EXPECT_TRUE(oa->Get(0) == oa.get()); 114 EXPECT_TRUE(oa->Get(1) == oa.get()); 115 116 Class* aioobe = class_linker_->FindSystemClass("Ljava/lang/ArrayIndexOutOfBoundsException;"); 117 118 EXPECT_TRUE(oa->Get(-1) == NULL); 119 EXPECT_TRUE(soa.Self()->IsExceptionPending()); 120 EXPECT_EQ(aioobe, soa.Self()->GetException(NULL)->GetClass()); 121 soa.Self()->ClearException(); 122 123 EXPECT_TRUE(oa->Get(2) == NULL); 124 EXPECT_TRUE(soa.Self()->IsExceptionPending()); 125 EXPECT_EQ(aioobe, soa.Self()->GetException(NULL)->GetClass()); 126 soa.Self()->ClearException(); 127 128 ASSERT_TRUE(oa->GetClass() != NULL); 129 ClassHelper oa_ch(oa->GetClass()); 130 ASSERT_EQ(2U, oa_ch.NumDirectInterfaces()); 131 EXPECT_EQ(class_linker_->FindSystemClass("Ljava/lang/Cloneable;"), oa_ch.GetDirectInterface(0)); 132 EXPECT_EQ(class_linker_->FindSystemClass("Ljava/io/Serializable;"), oa_ch.GetDirectInterface(1)); 133 } 134 135 TEST_F(ObjectTest, AllocArray) { 136 ScopedObjectAccess soa(Thread::Current()); 137 Class* c = class_linker_->FindSystemClass("[I"); 138 SirtRef<Array> a(soa.Self(), Array::Alloc(soa.Self(), c, 1)); 139 ASSERT_TRUE(c == a->GetClass()); 140 141 c = class_linker_->FindSystemClass("[Ljava/lang/Object;"); 142 a.reset(Array::Alloc(soa.Self(), c, 1)); 143 ASSERT_TRUE(c == a->GetClass()); 144 145 c = class_linker_->FindSystemClass("[[Ljava/lang/Object;"); 146 a.reset(Array::Alloc(soa.Self(), c, 1)); 147 ASSERT_TRUE(c == a->GetClass()); 148 } 149 150 template<typename ArrayT> 151 void TestPrimitiveArray(ClassLinker* cl) { 152 ScopedObjectAccess soa(Thread::Current()); 153 typedef typename ArrayT::ElementType T; 154 155 ArrayT* a = ArrayT::Alloc(soa.Self(), 2); 156 EXPECT_EQ(2, a->GetLength()); 157 EXPECT_EQ(0, a->Get(0)); 158 EXPECT_EQ(0, a->Get(1)); 159 a->Set(0, T(123)); 160 EXPECT_EQ(T(123), a->Get(0)); 161 EXPECT_EQ(0, a->Get(1)); 162 a->Set(1, T(321)); 163 EXPECT_EQ(T(123), a->Get(0)); 164 EXPECT_EQ(T(321), a->Get(1)); 165 166 Class* aioobe = cl->FindSystemClass("Ljava/lang/ArrayIndexOutOfBoundsException;"); 167 168 EXPECT_EQ(0, a->Get(-1)); 169 EXPECT_TRUE(soa.Self()->IsExceptionPending()); 170 EXPECT_EQ(aioobe, soa.Self()->GetException(NULL)->GetClass()); 171 soa.Self()->ClearException(); 172 173 EXPECT_EQ(0, a->Get(2)); 174 EXPECT_TRUE(soa.Self()->IsExceptionPending()); 175 EXPECT_EQ(aioobe, soa.Self()->GetException(NULL)->GetClass()); 176 soa.Self()->ClearException(); 177 } 178 179 TEST_F(ObjectTest, PrimitiveArray_Boolean_Alloc) { 180 TestPrimitiveArray<BooleanArray>(class_linker_); 181 } 182 TEST_F(ObjectTest, PrimitiveArray_Byte_Alloc) { 183 TestPrimitiveArray<ByteArray>(class_linker_); 184 } 185 TEST_F(ObjectTest, PrimitiveArray_Char_Alloc) { 186 TestPrimitiveArray<CharArray>(class_linker_); 187 } 188 TEST_F(ObjectTest, PrimitiveArray_Double_Alloc) { 189 TestPrimitiveArray<DoubleArray>(class_linker_); 190 } 191 TEST_F(ObjectTest, PrimitiveArray_Float_Alloc) { 192 TestPrimitiveArray<FloatArray>(class_linker_); 193 } 194 TEST_F(ObjectTest, PrimitiveArray_Int_Alloc) { 195 TestPrimitiveArray<IntArray>(class_linker_); 196 } 197 TEST_F(ObjectTest, PrimitiveArray_Long_Alloc) { 198 TestPrimitiveArray<LongArray>(class_linker_); 199 } 200 TEST_F(ObjectTest, PrimitiveArray_Short_Alloc) { 201 TestPrimitiveArray<ShortArray>(class_linker_); 202 } 203 204 TEST_F(ObjectTest, CheckAndAllocArrayFromCode) { 205 // pretend we are trying to call 'new char[3]' from String.toCharArray 206 ScopedObjectAccess soa(Thread::Current()); 207 Class* java_util_Arrays = class_linker_->FindSystemClass("Ljava/util/Arrays;"); 208 ArtMethod* sort = java_util_Arrays->FindDirectMethod("sort", "([I)V"); 209 const DexFile::StringId* string_id = java_lang_dex_file_->FindStringId("[I"); 210 ASSERT_TRUE(string_id != NULL); 211 const DexFile::TypeId* type_id = java_lang_dex_file_->FindTypeId( 212 java_lang_dex_file_->GetIndexForStringId(*string_id)); 213 ASSERT_TRUE(type_id != NULL); 214 uint32_t type_idx = java_lang_dex_file_->GetIndexForTypeId(*type_id); 215 Object* array = CheckAndAllocArrayFromCode(type_idx, sort, 3, Thread::Current(), false); 216 EXPECT_TRUE(array->IsArrayInstance()); 217 EXPECT_EQ(3, array->AsArray()->GetLength()); 218 EXPECT_TRUE(array->GetClass()->IsArrayClass()); 219 EXPECT_TRUE(array->GetClass()->GetComponentType()->IsPrimitive()); 220 } 221 222 TEST_F(ObjectTest, CreateMultiArray) { 223 ScopedObjectAccess soa(Thread::Current()); 224 225 SirtRef<Class> c(soa.Self(), class_linker_->FindSystemClass("I")); 226 SirtRef<IntArray> dims(soa.Self(), IntArray::Alloc(soa.Self(), 1)); 227 dims->Set(0, 1); 228 Array* multi = Array::CreateMultiArray(soa.Self(), c.get(), dims.get()); 229 EXPECT_TRUE(multi->GetClass() == class_linker_->FindSystemClass("[I")); 230 EXPECT_EQ(1, multi->GetLength()); 231 232 dims->Set(0, -1); 233 multi = Array::CreateMultiArray(soa.Self(), c.get(), dims.get()); 234 EXPECT_TRUE(soa.Self()->IsExceptionPending()); 235 EXPECT_EQ(PrettyDescriptor(soa.Self()->GetException(NULL)->GetClass()), 236 "java.lang.NegativeArraySizeException"); 237 soa.Self()->ClearException(); 238 239 dims.reset(IntArray::Alloc(soa.Self(), 2)); 240 for (int i = 1; i < 20; ++i) { 241 for (int j = 0; j < 20; ++j) { 242 dims->Set(0, i); 243 dims->Set(1, j); 244 multi = Array::CreateMultiArray(soa.Self(), c.get(), dims.get()); 245 EXPECT_TRUE(multi->GetClass() == class_linker_->FindSystemClass("[[I")); 246 EXPECT_EQ(i, multi->GetLength()); 247 for (int k = 0; k < i; ++k) { 248 Array* outer = multi->AsObjectArray<Array>()->Get(k); 249 EXPECT_TRUE(outer->GetClass() == class_linker_->FindSystemClass("[I")); 250 EXPECT_EQ(j, outer->GetLength()); 251 } 252 } 253 } 254 } 255 256 TEST_F(ObjectTest, StaticFieldFromCode) { 257 // pretend we are trying to access 'Static.s0' from StaticsFromCode.<clinit> 258 ScopedObjectAccess soa(Thread::Current()); 259 jobject class_loader = LoadDex("StaticsFromCode"); 260 const DexFile* dex_file = Runtime::Current()->GetCompileTimeClassPath(class_loader)[0]; 261 CHECK(dex_file != NULL); 262 263 Class* klass = 264 class_linker_->FindClass("LStaticsFromCode;", soa.Decode<ClassLoader*>(class_loader)); 265 ArtMethod* clinit = klass->FindDirectMethod("<clinit>", "()V"); 266 const DexFile::StringId* klass_string_id = dex_file->FindStringId("LStaticsFromCode;"); 267 ASSERT_TRUE(klass_string_id != NULL); 268 const DexFile::TypeId* klass_type_id = dex_file->FindTypeId( 269 dex_file->GetIndexForStringId(*klass_string_id)); 270 ASSERT_TRUE(klass_type_id != NULL); 271 272 const DexFile::StringId* type_string_id = dex_file->FindStringId("Ljava/lang/Object;"); 273 ASSERT_TRUE(type_string_id != NULL); 274 const DexFile::TypeId* type_type_id = dex_file->FindTypeId( 275 dex_file->GetIndexForStringId(*type_string_id)); 276 ASSERT_TRUE(type_type_id != NULL); 277 278 const DexFile::StringId* name_str_id = dex_file->FindStringId("s0"); 279 ASSERT_TRUE(name_str_id != NULL); 280 281 const DexFile::FieldId* field_id = dex_file->FindFieldId( 282 *klass_type_id, *name_str_id, *type_type_id); 283 ASSERT_TRUE(field_id != NULL); 284 uint32_t field_idx = dex_file->GetIndexForFieldId(*field_id); 285 286 ArtField* field = FindFieldFromCode(field_idx, clinit, Thread::Current(), StaticObjectRead, 287 sizeof(Object*), true); 288 Object* s0 = field->GetObj(klass); 289 EXPECT_TRUE(s0 != NULL); 290 291 SirtRef<CharArray> char_array(soa.Self(), CharArray::Alloc(soa.Self(), 0)); 292 field->SetObj(field->GetDeclaringClass(), char_array.get()); 293 EXPECT_EQ(char_array.get(), field->GetObj(klass)); 294 295 field->SetObj(field->GetDeclaringClass(), NULL); 296 EXPECT_EQ(NULL, field->GetObj(klass)); 297 298 // TODO: more exhaustive tests of all 6 cases of ArtField::*FromCode 299 } 300 301 TEST_F(ObjectTest, String) { 302 ScopedObjectAccess soa(Thread::Current()); 303 // Test the empty string. 304 AssertString(0, "", "", 0); 305 306 // Test one-byte characters. 307 AssertString(1, " ", "\x00\x20", 0x20); 308 AssertString(1, "", "\x00\x00", 0); 309 AssertString(1, "\x7f", "\x00\x7f", 0x7f); 310 AssertString(2, "hi", "\x00\x68\x00\x69", (31 * 0x68) + 0x69); 311 312 // Test two-byte characters. 313 AssertString(1, "\xc2\x80", "\x00\x80", 0x80); 314 AssertString(1, "\xd9\xa6", "\x06\x66", 0x0666); 315 AssertString(1, "\xdf\xbf", "\x07\xff", 0x07ff); 316 AssertString(3, "h\xd9\xa6i", "\x00\x68\x06\x66\x00\x69", (31 * ((31 * 0x68) + 0x0666)) + 0x69); 317 318 // Test three-byte characters. 319 AssertString(1, "\xe0\xa0\x80", "\x08\x00", 0x0800); 320 AssertString(1, "\xe1\x88\xb4", "\x12\x34", 0x1234); 321 AssertString(1, "\xef\xbf\xbf", "\xff\xff", 0xffff); 322 AssertString(3, "h\xe1\x88\xb4i", "\x00\x68\x12\x34\x00\x69", (31 * ((31 * 0x68) + 0x1234)) + 0x69); 323 } 324 325 TEST_F(ObjectTest, StringEqualsUtf8) { 326 ScopedObjectAccess soa(Thread::Current()); 327 SirtRef<String> string(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "android")); 328 EXPECT_TRUE(string->Equals("android")); 329 EXPECT_FALSE(string->Equals("Android")); 330 EXPECT_FALSE(string->Equals("ANDROID")); 331 EXPECT_FALSE(string->Equals("")); 332 EXPECT_FALSE(string->Equals("and")); 333 EXPECT_FALSE(string->Equals("androids")); 334 335 SirtRef<String> empty(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "")); 336 EXPECT_TRUE(empty->Equals("")); 337 EXPECT_FALSE(empty->Equals("a")); 338 } 339 340 TEST_F(ObjectTest, StringEquals) { 341 ScopedObjectAccess soa(Thread::Current()); 342 SirtRef<String> string(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "android")); 343 SirtRef<String> string_2(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "android")); 344 EXPECT_TRUE(string->Equals(string_2.get())); 345 EXPECT_FALSE(string->Equals("Android")); 346 EXPECT_FALSE(string->Equals("ANDROID")); 347 EXPECT_FALSE(string->Equals("")); 348 EXPECT_FALSE(string->Equals("and")); 349 EXPECT_FALSE(string->Equals("androids")); 350 351 SirtRef<String> empty(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "")); 352 EXPECT_TRUE(empty->Equals("")); 353 EXPECT_FALSE(empty->Equals("a")); 354 } 355 356 TEST_F(ObjectTest, StringCompareTo) { 357 ScopedObjectAccess soa(Thread::Current()); 358 SirtRef<String> string(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "android")); 359 SirtRef<String> string_2(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "android")); 360 SirtRef<String> string_3(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "Android")); 361 SirtRef<String> string_4(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "and")); 362 SirtRef<String> string_5(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "")); 363 EXPECT_EQ(0, string->CompareTo(string_2.get())); 364 EXPECT_LT(0, string->CompareTo(string_3.get())); 365 EXPECT_GT(0, string_3->CompareTo(string.get())); 366 EXPECT_LT(0, string->CompareTo(string_4.get())); 367 EXPECT_GT(0, string_4->CompareTo(string.get())); 368 EXPECT_LT(0, string->CompareTo(string_5.get())); 369 EXPECT_GT(0, string_5->CompareTo(string.get())); 370 } 371 372 TEST_F(ObjectTest, StringLength) { 373 ScopedObjectAccess soa(Thread::Current()); 374 SirtRef<String> string(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "android")); 375 EXPECT_EQ(string->GetLength(), 7); 376 EXPECT_EQ(string->GetUtfLength(), 7); 377 378 string->SetOffset(2); 379 string->SetCount(5); 380 EXPECT_TRUE(string->Equals("droid")); 381 EXPECT_EQ(string->GetLength(), 5); 382 EXPECT_EQ(string->GetUtfLength(), 5); 383 } 384 385 TEST_F(ObjectTest, DescriptorCompare) { 386 ScopedObjectAccess soa(Thread::Current()); 387 ClassLinker* linker = class_linker_; 388 389 jobject jclass_loader_1 = LoadDex("ProtoCompare"); 390 jobject jclass_loader_2 = LoadDex("ProtoCompare2"); 391 SirtRef<ClassLoader> class_loader_1(soa.Self(), soa.Decode<ClassLoader*>(jclass_loader_1)); 392 SirtRef<ClassLoader> class_loader_2(soa.Self(), soa.Decode<ClassLoader*>(jclass_loader_2)); 393 394 Class* klass1 = linker->FindClass("LProtoCompare;", class_loader_1.get()); 395 ASSERT_TRUE(klass1 != NULL); 396 Class* klass2 = linker->FindClass("LProtoCompare2;", class_loader_2.get()); 397 ASSERT_TRUE(klass2 != NULL); 398 399 ArtMethod* m1_1 = klass1->GetVirtualMethod(0); 400 MethodHelper mh(m1_1); 401 EXPECT_STREQ(mh.GetName(), "m1"); 402 ArtMethod* m2_1 = klass1->GetVirtualMethod(1); 403 mh.ChangeMethod(m2_1); 404 EXPECT_STREQ(mh.GetName(), "m2"); 405 ArtMethod* m3_1 = klass1->GetVirtualMethod(2); 406 mh.ChangeMethod(m3_1); 407 EXPECT_STREQ(mh.GetName(), "m3"); 408 ArtMethod* m4_1 = klass1->GetVirtualMethod(3); 409 mh.ChangeMethod(m4_1); 410 EXPECT_STREQ(mh.GetName(), "m4"); 411 412 ArtMethod* m1_2 = klass2->GetVirtualMethod(0); 413 mh.ChangeMethod(m1_2); 414 EXPECT_STREQ(mh.GetName(), "m1"); 415 ArtMethod* m2_2 = klass2->GetVirtualMethod(1); 416 mh.ChangeMethod(m2_2); 417 EXPECT_STREQ(mh.GetName(), "m2"); 418 ArtMethod* m3_2 = klass2->GetVirtualMethod(2); 419 mh.ChangeMethod(m3_2); 420 EXPECT_STREQ(mh.GetName(), "m3"); 421 ArtMethod* m4_2 = klass2->GetVirtualMethod(3); 422 mh.ChangeMethod(m4_2); 423 EXPECT_STREQ(mh.GetName(), "m4"); 424 425 mh.ChangeMethod(m1_1); 426 MethodHelper mh2(m1_2); 427 EXPECT_TRUE(mh.HasSameNameAndSignature(&mh2)); 428 EXPECT_TRUE(mh2.HasSameNameAndSignature(&mh)); 429 430 mh.ChangeMethod(m2_1); 431 mh2.ChangeMethod(m2_2); 432 EXPECT_TRUE(mh.HasSameNameAndSignature(&mh2)); 433 EXPECT_TRUE(mh2.HasSameNameAndSignature(&mh)); 434 435 mh.ChangeMethod(m3_1); 436 mh2.ChangeMethod(m3_2); 437 EXPECT_TRUE(mh.HasSameNameAndSignature(&mh2)); 438 EXPECT_TRUE(mh2.HasSameNameAndSignature(&mh)); 439 440 mh.ChangeMethod(m4_1); 441 mh2.ChangeMethod(m4_2); 442 EXPECT_TRUE(mh.HasSameNameAndSignature(&mh2)); 443 EXPECT_TRUE(mh2.HasSameNameAndSignature(&mh)); 444 } 445 446 TEST_F(ObjectTest, StringHashCode) { 447 ScopedObjectAccess soa(Thread::Current()); 448 SirtRef<String> empty(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "")); 449 SirtRef<String> A(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "A")); 450 SirtRef<String> ABC(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "ABC")); 451 452 EXPECT_EQ(0, empty->GetHashCode()); 453 EXPECT_EQ(65, A->GetHashCode()); 454 EXPECT_EQ(64578, ABC->GetHashCode()); 455 } 456 457 TEST_F(ObjectTest, InstanceOf) { 458 ScopedObjectAccess soa(Thread::Current()); 459 jobject jclass_loader = LoadDex("XandY"); 460 SirtRef<ClassLoader> class_loader(soa.Self(), soa.Decode<ClassLoader*>(jclass_loader)); 461 462 Class* X = class_linker_->FindClass("LX;", class_loader.get()); 463 Class* Y = class_linker_->FindClass("LY;", class_loader.get()); 464 ASSERT_TRUE(X != NULL); 465 ASSERT_TRUE(Y != NULL); 466 467 SirtRef<Object> x(soa.Self(), X->AllocObject(soa.Self())); 468 SirtRef<Object> y(soa.Self(), Y->AllocObject(soa.Self())); 469 ASSERT_TRUE(x.get() != NULL); 470 ASSERT_TRUE(y.get() != NULL); 471 472 EXPECT_TRUE(x->InstanceOf(X)); 473 EXPECT_FALSE(x->InstanceOf(Y)); 474 EXPECT_TRUE(y->InstanceOf(X)); 475 EXPECT_TRUE(y->InstanceOf(Y)); 476 477 Class* java_lang_Class = class_linker_->FindSystemClass("Ljava/lang/Class;"); 478 Class* Object_array_class = class_linker_->FindSystemClass("[Ljava/lang/Object;"); 479 480 EXPECT_FALSE(java_lang_Class->InstanceOf(Object_array_class)); 481 EXPECT_TRUE(Object_array_class->InstanceOf(java_lang_Class)); 482 483 // All array classes implement Cloneable and Serializable. 484 Object* array = ObjectArray<Object>::Alloc(soa.Self(), Object_array_class, 1); 485 Class* java_lang_Cloneable = class_linker_->FindSystemClass("Ljava/lang/Cloneable;"); 486 Class* java_io_Serializable = class_linker_->FindSystemClass("Ljava/io/Serializable;"); 487 EXPECT_TRUE(array->InstanceOf(java_lang_Cloneable)); 488 EXPECT_TRUE(array->InstanceOf(java_io_Serializable)); 489 } 490 491 TEST_F(ObjectTest, IsAssignableFrom) { 492 ScopedObjectAccess soa(Thread::Current()); 493 jobject jclass_loader = LoadDex("XandY"); 494 SirtRef<ClassLoader> class_loader(soa.Self(), soa.Decode<ClassLoader*>(jclass_loader)); 495 Class* X = class_linker_->FindClass("LX;", class_loader.get()); 496 Class* Y = class_linker_->FindClass("LY;", class_loader.get()); 497 498 EXPECT_TRUE(X->IsAssignableFrom(X)); 499 EXPECT_TRUE(X->IsAssignableFrom(Y)); 500 EXPECT_FALSE(Y->IsAssignableFrom(X)); 501 EXPECT_TRUE(Y->IsAssignableFrom(Y)); 502 503 // class final String implements CharSequence, .. 504 Class* string = class_linker_->FindSystemClass("Ljava/lang/String;"); 505 Class* charseq = class_linker_->FindSystemClass("Ljava/lang/CharSequence;"); 506 // Can String be assigned to CharSequence without a cast? 507 EXPECT_TRUE(charseq->IsAssignableFrom(string)); 508 // Can CharSequence be assigned to String without a cast? 509 EXPECT_FALSE(string->IsAssignableFrom(charseq)); 510 511 // Primitive types are only assignable to themselves 512 const char* prims = "ZBCSIJFD"; 513 Class* prim_types[strlen(prims)]; 514 for (size_t i = 0; i < strlen(prims); i++) { 515 prim_types[i] = class_linker_->FindPrimitiveClass(prims[i]); 516 } 517 for (size_t i = 0; i < strlen(prims); i++) { 518 for (size_t j = 0; i < strlen(prims); i++) { 519 if (i == j) { 520 EXPECT_TRUE(prim_types[i]->IsAssignableFrom(prim_types[j])); 521 } else { 522 EXPECT_FALSE(prim_types[i]->IsAssignableFrom(prim_types[j])); 523 } 524 } 525 } 526 } 527 528 TEST_F(ObjectTest, IsAssignableFromArray) { 529 ScopedObjectAccess soa(Thread::Current()); 530 jobject jclass_loader = LoadDex("XandY"); 531 SirtRef<ClassLoader> class_loader(soa.Self(), soa.Decode<ClassLoader*>(jclass_loader)); 532 Class* X = class_linker_->FindClass("LX;", class_loader.get()); 533 Class* Y = class_linker_->FindClass("LY;", class_loader.get()); 534 ASSERT_TRUE(X != NULL); 535 ASSERT_TRUE(Y != NULL); 536 537 Class* YA = class_linker_->FindClass("[LY;", class_loader.get()); 538 Class* YAA = class_linker_->FindClass("[[LY;", class_loader.get()); 539 ASSERT_TRUE(YA != NULL); 540 ASSERT_TRUE(YAA != NULL); 541 542 Class* XAA = class_linker_->FindClass("[[LX;", class_loader.get()); 543 ASSERT_TRUE(XAA != NULL); 544 545 Class* O = class_linker_->FindSystemClass("Ljava/lang/Object;"); 546 Class* OA = class_linker_->FindSystemClass("[Ljava/lang/Object;"); 547 Class* OAA = class_linker_->FindSystemClass("[[Ljava/lang/Object;"); 548 Class* OAAA = class_linker_->FindSystemClass("[[[Ljava/lang/Object;"); 549 ASSERT_TRUE(O != NULL); 550 ASSERT_TRUE(OA != NULL); 551 ASSERT_TRUE(OAA != NULL); 552 ASSERT_TRUE(OAAA != NULL); 553 554 Class* S = class_linker_->FindSystemClass("Ljava/io/Serializable;"); 555 Class* SA = class_linker_->FindSystemClass("[Ljava/io/Serializable;"); 556 Class* SAA = class_linker_->FindSystemClass("[[Ljava/io/Serializable;"); 557 ASSERT_TRUE(S != NULL); 558 ASSERT_TRUE(SA != NULL); 559 ASSERT_TRUE(SAA != NULL); 560 561 Class* IA = class_linker_->FindSystemClass("[I"); 562 ASSERT_TRUE(IA != NULL); 563 564 EXPECT_TRUE(YAA->IsAssignableFrom(YAA)); // identity 565 EXPECT_TRUE(XAA->IsAssignableFrom(YAA)); // element superclass 566 EXPECT_FALSE(YAA->IsAssignableFrom(XAA)); 567 EXPECT_FALSE(Y->IsAssignableFrom(YAA)); 568 EXPECT_FALSE(YA->IsAssignableFrom(YAA)); 569 EXPECT_TRUE(O->IsAssignableFrom(YAA)); // everything is an Object 570 EXPECT_TRUE(OA->IsAssignableFrom(YAA)); 571 EXPECT_TRUE(OAA->IsAssignableFrom(YAA)); 572 EXPECT_TRUE(S->IsAssignableFrom(YAA)); // all arrays are Serializable 573 EXPECT_TRUE(SA->IsAssignableFrom(YAA)); 574 EXPECT_FALSE(SAA->IsAssignableFrom(YAA)); // unless Y was Serializable 575 576 EXPECT_FALSE(IA->IsAssignableFrom(OA)); 577 EXPECT_FALSE(OA->IsAssignableFrom(IA)); 578 EXPECT_TRUE(O->IsAssignableFrom(IA)); 579 } 580 581 TEST_F(ObjectTest, FindInstanceField) { 582 ScopedObjectAccess soa(Thread::Current()); 583 SirtRef<String> s(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "ABC")); 584 ASSERT_TRUE(s.get() != NULL); 585 Class* c = s->GetClass(); 586 ASSERT_TRUE(c != NULL); 587 588 // Wrong type. 589 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "J") == NULL); 590 EXPECT_TRUE(c->FindInstanceField("count", "J") == NULL); 591 592 // Wrong name. 593 EXPECT_TRUE(c->FindDeclaredInstanceField("Count", "I") == NULL); 594 EXPECT_TRUE(c->FindInstanceField("Count", "I") == NULL); 595 596 // Right name and type. 597 ArtField* f1 = c->FindDeclaredInstanceField("count", "I"); 598 ArtField* f2 = c->FindInstanceField("count", "I"); 599 EXPECT_TRUE(f1 != NULL); 600 EXPECT_TRUE(f2 != NULL); 601 EXPECT_EQ(f1, f2); 602 603 // TODO: check that s.count == 3. 604 605 // Ensure that we handle superclass fields correctly... 606 c = class_linker_->FindSystemClass("Ljava/lang/StringBuilder;"); 607 ASSERT_TRUE(c != NULL); 608 // No StringBuilder.count... 609 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "I") == NULL); 610 // ...but there is an AbstractStringBuilder.count. 611 EXPECT_TRUE(c->FindInstanceField("count", "I") != NULL); 612 } 613 614 TEST_F(ObjectTest, FindStaticField) { 615 ScopedObjectAccess soa(Thread::Current()); 616 SirtRef<String> s(soa.Self(), String::AllocFromModifiedUtf8(soa.Self(), "ABC")); 617 ASSERT_TRUE(s.get() != NULL); 618 Class* c = s->GetClass(); 619 ASSERT_TRUE(c != NULL); 620 621 // Wrong type. 622 EXPECT_TRUE(c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "I") == NULL); 623 EXPECT_TRUE(c->FindStaticField("CASE_INSENSITIVE_ORDER", "I") == NULL); 624 625 // Wrong name. 626 EXPECT_TRUE(c->FindDeclaredStaticField("cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == NULL); 627 EXPECT_TRUE(c->FindStaticField("cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == NULL); 628 629 // Right name and type. 630 ArtField* f1 = c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;"); 631 ArtField* f2 = c->FindStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;"); 632 EXPECT_TRUE(f1 != NULL); 633 EXPECT_TRUE(f2 != NULL); 634 EXPECT_EQ(f1, f2); 635 636 // TODO: test static fields via superclasses. 637 // TODO: test static fields via interfaces. 638 // TODO: test that interfaces trump superclasses. 639 } 640 641 } // namespace mirror 642 } // namespace art 643
