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 #include <memory>
22
23 #include "array-inl.h"
24 #include "art_field-inl.h"
25 #include "art_method-inl.h"
26 #include "asm_support.h"
27 #include "class-inl.h"
28 #include "class_linker.h"
29 #include "class_linker-inl.h"
30 #include "common_runtime_test.h"
31 #include "dex_file.h"
32 #include "entrypoints/entrypoint_utils-inl.h"
33 #include "gc/accounting/card_table-inl.h"
34 #include "gc/heap.h"
35 #include "handle_scope-inl.h"
36 #include "iftable-inl.h"
37 #include "object-inl.h"
38 #include "object_array-inl.h"
39 #include "scoped_thread_state_change.h"
40 #include "string-inl.h"
41
42 namespace art {
43 namespace mirror {
44
45 class ObjectTest : public CommonRuntimeTest {
46 protected:
AssertString(int32_t expected_utf16_length,const char * utf8_in,const char * utf16_expected_le,int32_t expected_hash)47 void AssertString(int32_t expected_utf16_length,
48 const char* utf8_in,
49 const char* utf16_expected_le,
50 int32_t expected_hash)
51 SHARED_REQUIRES(Locks::mutator_lock_) {
52 std::unique_ptr<uint16_t[]> utf16_expected(new uint16_t[expected_utf16_length]);
53 for (int32_t i = 0; i < expected_utf16_length; i++) {
54 uint16_t ch = (((utf16_expected_le[i*2 + 0] & 0xff) << 8) |
55 ((utf16_expected_le[i*2 + 1] & 0xff) << 0));
56 utf16_expected[i] = ch;
57 }
58
59 Thread* self = Thread::Current();
60 StackHandleScope<1> hs(self);
61 Handle<String> string(
62 hs.NewHandle(String::AllocFromModifiedUtf8(self, expected_utf16_length, utf8_in)));
63 ASSERT_EQ(expected_utf16_length, string->GetLength());
64 ASSERT_TRUE(string->GetValue() != nullptr);
65 // strlen is necessary because the 1-character string "\x00\x00" is interpreted as ""
66 ASSERT_TRUE(string->Equals(utf8_in) || (expected_utf16_length == 1 && strlen(utf8_in) == 0));
67 ASSERT_TRUE(string->Equals(StringPiece(utf8_in)) ||
68 (expected_utf16_length == 1 && strlen(utf8_in) == 0));
69 for (int32_t i = 0; i < expected_utf16_length; i++) {
70 EXPECT_EQ(utf16_expected[i], string->CharAt(i));
71 }
72 EXPECT_EQ(expected_hash, string->GetHashCode());
73 }
74 };
75
76 // Keep constants in sync.
TEST_F(ObjectTest,Constants)77 TEST_F(ObjectTest, Constants) {
78 EXPECT_EQ(kObjectReferenceSize, sizeof(HeapReference<Object>));
79 EXPECT_EQ(kObjectHeaderSize, sizeof(Object));
80 EXPECT_EQ(ART_METHOD_QUICK_CODE_OFFSET_32,
81 ArtMethod::EntryPointFromQuickCompiledCodeOffset(4).Int32Value());
82 EXPECT_EQ(ART_METHOD_QUICK_CODE_OFFSET_64,
83 ArtMethod::EntryPointFromQuickCompiledCodeOffset(8).Int32Value());
84 }
85
TEST_F(ObjectTest,IsInSamePackage)86 TEST_F(ObjectTest, IsInSamePackage) {
87 // Matches
88 EXPECT_TRUE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/Class;"));
89 EXPECT_TRUE(Class::IsInSamePackage("LFoo;", "LBar;"));
90
91 // Mismatches
92 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/io/File;"));
93 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/reflect/Method;"));
94 }
95
TEST_F(ObjectTest,Clone)96 TEST_F(ObjectTest, Clone) {
97 ScopedObjectAccess soa(Thread::Current());
98 StackHandleScope<2> hs(soa.Self());
99 Handle<ObjectArray<Object>> a1(
100 hs.NewHandle(class_linker_->AllocObjectArray<Object>(soa.Self(), 256)));
101 size_t s1 = a1->SizeOf();
102 Object* clone = a1->Clone(soa.Self());
103 EXPECT_EQ(s1, clone->SizeOf());
104 EXPECT_TRUE(clone->GetClass() == a1->GetClass());
105 }
106
TEST_F(ObjectTest,AllocObjectArray)107 TEST_F(ObjectTest, AllocObjectArray) {
108 ScopedObjectAccess soa(Thread::Current());
109 StackHandleScope<2> hs(soa.Self());
110 Handle<ObjectArray<Object>> oa(
111 hs.NewHandle(class_linker_->AllocObjectArray<Object>(soa.Self(), 2)));
112 EXPECT_EQ(2, oa->GetLength());
113 EXPECT_TRUE(oa->Get(0) == nullptr);
114 EXPECT_TRUE(oa->Get(1) == nullptr);
115 oa->Set<false>(0, oa.Get());
116 EXPECT_TRUE(oa->Get(0) == oa.Get());
117 EXPECT_TRUE(oa->Get(1) == nullptr);
118 oa->Set<false>(1, oa.Get());
119 EXPECT_TRUE(oa->Get(0) == oa.Get());
120 EXPECT_TRUE(oa->Get(1) == oa.Get());
121
122 Class* aioobe = class_linker_->FindSystemClass(soa.Self(),
123 "Ljava/lang/ArrayIndexOutOfBoundsException;");
124
125 EXPECT_TRUE(oa->Get(-1) == nullptr);
126 EXPECT_TRUE(soa.Self()->IsExceptionPending());
127 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
128 soa.Self()->ClearException();
129
130 EXPECT_TRUE(oa->Get(2) == nullptr);
131 EXPECT_TRUE(soa.Self()->IsExceptionPending());
132 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
133 soa.Self()->ClearException();
134
135 ASSERT_TRUE(oa->GetClass() != nullptr);
136 Handle<mirror::Class> klass(hs.NewHandle(oa->GetClass()));
137 ASSERT_EQ(2U, klass->NumDirectInterfaces());
138 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Cloneable;"),
139 mirror::Class::GetDirectInterface(soa.Self(), klass, 0));
140 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;"),
141 mirror::Class::GetDirectInterface(soa.Self(), klass, 1));
142 }
143
TEST_F(ObjectTest,AllocArray)144 TEST_F(ObjectTest, AllocArray) {
145 ScopedObjectAccess soa(Thread::Current());
146 Class* c = class_linker_->FindSystemClass(soa.Self(), "[I");
147 StackHandleScope<1> hs(soa.Self());
148 MutableHandle<Array> a(
149 hs.NewHandle(Array::Alloc<true>(soa.Self(), c, 1, c->GetComponentSizeShift(),
150 Runtime::Current()->GetHeap()->GetCurrentAllocator())));
151 EXPECT_TRUE(c == a->GetClass());
152 EXPECT_EQ(1, a->GetLength());
153
154 c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;");
155 a.Assign(Array::Alloc<true>(soa.Self(), c, 1, c->GetComponentSizeShift(),
156 Runtime::Current()->GetHeap()->GetCurrentAllocator()));
157 EXPECT_TRUE(c == a->GetClass());
158 EXPECT_EQ(1, a->GetLength());
159
160 c = class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;");
161 a.Assign(Array::Alloc<true>(soa.Self(), c, 1, c->GetComponentSizeShift(),
162 Runtime::Current()->GetHeap()->GetCurrentAllocator()));
163 EXPECT_TRUE(c == a->GetClass());
164 EXPECT_EQ(1, a->GetLength());
165 }
166
TEST_F(ObjectTest,AllocArray_FillUsable)167 TEST_F(ObjectTest, AllocArray_FillUsable) {
168 ScopedObjectAccess soa(Thread::Current());
169 Class* c = class_linker_->FindSystemClass(soa.Self(), "[B");
170 StackHandleScope<1> hs(soa.Self());
171 MutableHandle<Array> a(
172 hs.NewHandle(Array::Alloc<true, true>(soa.Self(), c, 1, c->GetComponentSizeShift(),
173 Runtime::Current()->GetHeap()->GetCurrentAllocator())));
174 EXPECT_TRUE(c == a->GetClass());
175 EXPECT_LE(1, a->GetLength());
176
177 c = class_linker_->FindSystemClass(soa.Self(), "[I");
178 a.Assign(Array::Alloc<true, true>(soa.Self(), c, 2, c->GetComponentSizeShift(),
179 Runtime::Current()->GetHeap()->GetCurrentAllocator()));
180 EXPECT_TRUE(c == a->GetClass());
181 EXPECT_LE(2, a->GetLength());
182
183 c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;");
184 a.Assign(Array::Alloc<true, true>(soa.Self(), c, 2, c->GetComponentSizeShift(),
185 Runtime::Current()->GetHeap()->GetCurrentAllocator()));
186 EXPECT_TRUE(c == a->GetClass());
187 EXPECT_LE(2, a->GetLength());
188
189 c = class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;");
190 a.Assign(Array::Alloc<true, true>(soa.Self(), c, 2, c->GetComponentSizeShift(),
191 Runtime::Current()->GetHeap()->GetCurrentAllocator()));
192 EXPECT_TRUE(c == a->GetClass());
193 EXPECT_LE(2, a->GetLength());
194 }
195
196 template<typename ArrayT>
TestPrimitiveArray(ClassLinker * cl)197 void TestPrimitiveArray(ClassLinker* cl) {
198 ScopedObjectAccess soa(Thread::Current());
199 typedef typename ArrayT::ElementType T;
200
201 ArrayT* a = ArrayT::Alloc(soa.Self(), 2);
202 EXPECT_EQ(2, a->GetLength());
203 EXPECT_EQ(0, a->Get(0));
204 EXPECT_EQ(0, a->Get(1));
205 a->Set(0, T(123));
206 EXPECT_EQ(T(123), a->Get(0));
207 EXPECT_EQ(0, a->Get(1));
208 a->Set(1, T(321));
209 EXPECT_EQ(T(123), a->Get(0));
210 EXPECT_EQ(T(321), a->Get(1));
211
212 Class* aioobe = cl->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;");
213
214 EXPECT_EQ(0, a->Get(-1));
215 EXPECT_TRUE(soa.Self()->IsExceptionPending());
216 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
217 soa.Self()->ClearException();
218
219 EXPECT_EQ(0, a->Get(2));
220 EXPECT_TRUE(soa.Self()->IsExceptionPending());
221 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
222 soa.Self()->ClearException();
223 }
224
TEST_F(ObjectTest,PrimitiveArray_Boolean_Alloc)225 TEST_F(ObjectTest, PrimitiveArray_Boolean_Alloc) {
226 TestPrimitiveArray<BooleanArray>(class_linker_);
227 }
TEST_F(ObjectTest,PrimitiveArray_Byte_Alloc)228 TEST_F(ObjectTest, PrimitiveArray_Byte_Alloc) {
229 TestPrimitiveArray<ByteArray>(class_linker_);
230 }
TEST_F(ObjectTest,PrimitiveArray_Char_Alloc)231 TEST_F(ObjectTest, PrimitiveArray_Char_Alloc) {
232 TestPrimitiveArray<CharArray>(class_linker_);
233 }
TEST_F(ObjectTest,PrimitiveArray_Int_Alloc)234 TEST_F(ObjectTest, PrimitiveArray_Int_Alloc) {
235 TestPrimitiveArray<IntArray>(class_linker_);
236 }
TEST_F(ObjectTest,PrimitiveArray_Long_Alloc)237 TEST_F(ObjectTest, PrimitiveArray_Long_Alloc) {
238 TestPrimitiveArray<LongArray>(class_linker_);
239 }
TEST_F(ObjectTest,PrimitiveArray_Short_Alloc)240 TEST_F(ObjectTest, PrimitiveArray_Short_Alloc) {
241 TestPrimitiveArray<ShortArray>(class_linker_);
242 }
243
TEST_F(ObjectTest,PrimitiveArray_Double_Alloc)244 TEST_F(ObjectTest, PrimitiveArray_Double_Alloc) {
245 typedef DoubleArray ArrayT;
246 ScopedObjectAccess soa(Thread::Current());
247 typedef typename ArrayT::ElementType T;
248
249 ArrayT* a = ArrayT::Alloc(soa.Self(), 2);
250 EXPECT_EQ(2, a->GetLength());
251 EXPECT_DOUBLE_EQ(0, a->Get(0));
252 EXPECT_DOUBLE_EQ(0, a->Get(1));
253 a->Set(0, T(123));
254 EXPECT_DOUBLE_EQ(T(123), a->Get(0));
255 EXPECT_DOUBLE_EQ(0, a->Get(1));
256 a->Set(1, T(321));
257 EXPECT_DOUBLE_EQ(T(123), a->Get(0));
258 EXPECT_DOUBLE_EQ(T(321), a->Get(1));
259
260 Class* aioobe = class_linker_->FindSystemClass(soa.Self(),
261 "Ljava/lang/ArrayIndexOutOfBoundsException;");
262
263 EXPECT_DOUBLE_EQ(0, a->Get(-1));
264 EXPECT_TRUE(soa.Self()->IsExceptionPending());
265 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
266 soa.Self()->ClearException();
267
268 EXPECT_DOUBLE_EQ(0, a->Get(2));
269 EXPECT_TRUE(soa.Self()->IsExceptionPending());
270 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
271 soa.Self()->ClearException();
272 }
273
TEST_F(ObjectTest,PrimitiveArray_Float_Alloc)274 TEST_F(ObjectTest, PrimitiveArray_Float_Alloc) {
275 typedef FloatArray ArrayT;
276 ScopedObjectAccess soa(Thread::Current());
277 typedef typename ArrayT::ElementType T;
278
279 ArrayT* a = ArrayT::Alloc(soa.Self(), 2);
280 EXPECT_FLOAT_EQ(2, a->GetLength());
281 EXPECT_FLOAT_EQ(0, a->Get(0));
282 EXPECT_FLOAT_EQ(0, a->Get(1));
283 a->Set(0, T(123));
284 EXPECT_FLOAT_EQ(T(123), a->Get(0));
285 EXPECT_FLOAT_EQ(0, a->Get(1));
286 a->Set(1, T(321));
287 EXPECT_FLOAT_EQ(T(123), a->Get(0));
288 EXPECT_FLOAT_EQ(T(321), a->Get(1));
289
290 Class* aioobe = class_linker_->FindSystemClass(soa.Self(),
291 "Ljava/lang/ArrayIndexOutOfBoundsException;");
292
293 EXPECT_FLOAT_EQ(0, a->Get(-1));
294 EXPECT_TRUE(soa.Self()->IsExceptionPending());
295 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
296 soa.Self()->ClearException();
297
298 EXPECT_FLOAT_EQ(0, a->Get(2));
299 EXPECT_TRUE(soa.Self()->IsExceptionPending());
300 EXPECT_EQ(aioobe, soa.Self()->GetException()->GetClass());
301 soa.Self()->ClearException();
302 }
303
304
TEST_F(ObjectTest,CheckAndAllocArrayFromCode)305 TEST_F(ObjectTest, CheckAndAllocArrayFromCode) {
306 // pretend we are trying to call 'new char[3]' from String.toCharArray
307 ScopedObjectAccess soa(Thread::Current());
308 Class* java_util_Arrays = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/Arrays;");
309 ArtMethod* sort = java_util_Arrays->FindDirectMethod("sort", "([I)V", sizeof(void*));
310 const DexFile::TypeId* type_id = java_lang_dex_file_->FindTypeId("[I");
311 ASSERT_TRUE(type_id != nullptr);
312 uint32_t type_idx = java_lang_dex_file_->GetIndexForTypeId(*type_id);
313 Object* array = CheckAndAllocArrayFromCodeInstrumented(
314 type_idx, 3, sort, Thread::Current(), false,
315 Runtime::Current()->GetHeap()->GetCurrentAllocator());
316 EXPECT_TRUE(array->IsArrayInstance());
317 EXPECT_EQ(3, array->AsArray()->GetLength());
318 EXPECT_TRUE(array->GetClass()->IsArrayClass());
319 EXPECT_TRUE(array->GetClass()->GetComponentType()->IsPrimitive());
320 }
321
TEST_F(ObjectTest,CreateMultiArray)322 TEST_F(ObjectTest, CreateMultiArray) {
323 ScopedObjectAccess soa(Thread::Current());
324
325 StackHandleScope<2> hs(soa.Self());
326 Handle<Class> c(hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "I")));
327 MutableHandle<IntArray> dims(hs.NewHandle(IntArray::Alloc(soa.Self(), 1)));
328 dims->Set<false>(0, 1);
329 Array* multi = Array::CreateMultiArray(soa.Self(), c, dims);
330 EXPECT_TRUE(multi->GetClass() == class_linker_->FindSystemClass(soa.Self(), "[I"));
331 EXPECT_EQ(1, multi->GetLength());
332
333 dims->Set<false>(0, -1);
334 multi = Array::CreateMultiArray(soa.Self(), c, dims);
335 EXPECT_TRUE(soa.Self()->IsExceptionPending());
336 EXPECT_EQ(PrettyDescriptor(soa.Self()->GetException()->GetClass()),
337 "java.lang.NegativeArraySizeException");
338 soa.Self()->ClearException();
339
340 dims.Assign(IntArray::Alloc(soa.Self(), 2));
341 for (int i = 1; i < 20; ++i) {
342 for (int j = 0; j < 20; ++j) {
343 dims->Set<false>(0, i);
344 dims->Set<false>(1, j);
345 multi = Array::CreateMultiArray(soa.Self(), c, dims);
346 EXPECT_TRUE(multi->GetClass() == class_linker_->FindSystemClass(soa.Self(), "[[I"));
347 EXPECT_EQ(i, multi->GetLength());
348 for (int k = 0; k < i; ++k) {
349 Array* outer = multi->AsObjectArray<Array>()->Get(k);
350 EXPECT_TRUE(outer->GetClass() == class_linker_->FindSystemClass(soa.Self(), "[I"));
351 EXPECT_EQ(j, outer->GetLength());
352 }
353 }
354 }
355 }
356
TEST_F(ObjectTest,StaticFieldFromCode)357 TEST_F(ObjectTest, StaticFieldFromCode) {
358 // pretend we are trying to access 'Static.s0' from StaticsFromCode.<clinit>
359 ScopedObjectAccess soa(Thread::Current());
360 jobject class_loader = LoadDex("StaticsFromCode");
361 const DexFile* dex_file = GetFirstDexFile(class_loader);
362
363 StackHandleScope<2> hs(soa.Self());
364 Handle<mirror::ClassLoader> loader(hs.NewHandle(soa.Decode<ClassLoader*>(class_loader)));
365 Class* klass = class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", loader);
366 ArtMethod* clinit = klass->FindClassInitializer(sizeof(void*));
367 const DexFile::TypeId* klass_type_id = dex_file->FindTypeId("LStaticsFromCode;");
368 ASSERT_TRUE(klass_type_id != nullptr);
369
370 const DexFile::TypeId* type_type_id = dex_file->FindTypeId("Ljava/lang/Object;");
371 ASSERT_TRUE(type_type_id != nullptr);
372
373 const DexFile::StringId* name_str_id = dex_file->FindStringId("s0");
374 ASSERT_TRUE(name_str_id != nullptr);
375
376 const DexFile::FieldId* field_id = dex_file->FindFieldId(
377 *klass_type_id, *name_str_id, *type_type_id);
378 ASSERT_TRUE(field_id != nullptr);
379 uint32_t field_idx = dex_file->GetIndexForFieldId(*field_id);
380
381 ArtField* field = FindFieldFromCode<StaticObjectRead, true>(field_idx, clinit, Thread::Current(),
382 sizeof(HeapReference<Object>));
383 Object* s0 = field->GetObj(klass);
384 EXPECT_TRUE(s0 != nullptr);
385
386 Handle<CharArray> char_array(hs.NewHandle(CharArray::Alloc(soa.Self(), 0)));
387 field->SetObj<false>(field->GetDeclaringClass(), char_array.Get());
388 EXPECT_EQ(char_array.Get(), field->GetObj(klass));
389
390 field->SetObj<false>(field->GetDeclaringClass(), nullptr);
391 EXPECT_EQ(nullptr, field->GetObj(klass));
392
393 // TODO: more exhaustive tests of all 6 cases of ArtField::*FromCode
394 }
395
TEST_F(ObjectTest,String)396 TEST_F(ObjectTest, String) {
397 ScopedObjectAccess soa(Thread::Current());
398 // Test the empty string.
399 AssertString(0, "", "", 0);
400
401 // Test one-byte characters.
402 AssertString(1, " ", "\x00\x20", 0x20);
403 AssertString(1, "", "\x00\x00", 0);
404 AssertString(1, "\x7f", "\x00\x7f", 0x7f);
405 AssertString(2, "hi", "\x00\x68\x00\x69", (31 * 0x68) + 0x69);
406
407 // Test two-byte characters.
408 AssertString(1, "\xc2\x80", "\x00\x80", 0x80);
409 AssertString(1, "\xd9\xa6", "\x06\x66", 0x0666);
410 AssertString(1, "\xdf\xbf", "\x07\xff", 0x07ff);
411 AssertString(3, "h\xd9\xa6i", "\x00\x68\x06\x66\x00\x69",
412 (31 * ((31 * 0x68) + 0x0666)) + 0x69);
413
414 // Test three-byte characters.
415 AssertString(1, "\xe0\xa0\x80", "\x08\x00", 0x0800);
416 AssertString(1, "\xe1\x88\xb4", "\x12\x34", 0x1234);
417 AssertString(1, "\xef\xbf\xbf", "\xff\xff", 0xffff);
418 AssertString(3, "h\xe1\x88\xb4i", "\x00\x68\x12\x34\x00\x69",
419 (31 * ((31 * 0x68) + 0x1234)) + 0x69);
420
421 // Test four-byte characters.
422 AssertString(2, "\xf0\x9f\x8f\xa0", "\xd8\x3c\xdf\xe0", (31 * 0xd83c) + 0xdfe0);
423 AssertString(2, "\xf0\x9f\x9a\x80", "\xd8\x3d\xde\x80", (31 * 0xd83d) + 0xde80);
424 AssertString(4, "h\xf0\x9f\x9a\x80i", "\x00\x68\xd8\x3d\xde\x80\x00\x69",
425 (31 * (31 * (31 * 0x68 + 0xd83d) + 0xde80) + 0x69));
426 }
427
TEST_F(ObjectTest,StringEqualsUtf8)428 TEST_F(ObjectTest, StringEqualsUtf8) {
429 ScopedObjectAccess soa(Thread::Current());
430 StackHandleScope<2> hs(soa.Self());
431 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
432 EXPECT_TRUE(string->Equals("android"));
433 EXPECT_FALSE(string->Equals("Android"));
434 EXPECT_FALSE(string->Equals("ANDROID"));
435 EXPECT_FALSE(string->Equals(""));
436 EXPECT_FALSE(string->Equals("and"));
437 EXPECT_FALSE(string->Equals("androids"));
438
439 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
440 EXPECT_TRUE(empty->Equals(""));
441 EXPECT_FALSE(empty->Equals("a"));
442 }
443
TEST_F(ObjectTest,StringEquals)444 TEST_F(ObjectTest, StringEquals) {
445 ScopedObjectAccess soa(Thread::Current());
446 StackHandleScope<3> hs(soa.Self());
447 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
448 Handle<String> string_2(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
449 EXPECT_TRUE(string->Equals(string_2.Get()));
450 EXPECT_FALSE(string->Equals("Android"));
451 EXPECT_FALSE(string->Equals("ANDROID"));
452 EXPECT_FALSE(string->Equals(""));
453 EXPECT_FALSE(string->Equals("and"));
454 EXPECT_FALSE(string->Equals("androids"));
455
456 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
457 EXPECT_TRUE(empty->Equals(""));
458 EXPECT_FALSE(empty->Equals("a"));
459 }
460
TEST_F(ObjectTest,StringCompareTo)461 TEST_F(ObjectTest, StringCompareTo) {
462 ScopedObjectAccess soa(Thread::Current());
463 StackHandleScope<5> hs(soa.Self());
464 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
465 Handle<String> string_2(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
466 Handle<String> string_3(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "Android")));
467 Handle<String> string_4(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "and")));
468 Handle<String> string_5(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
469 EXPECT_EQ(0, string->CompareTo(string_2.Get()));
470 EXPECT_LT(0, string->CompareTo(string_3.Get()));
471 EXPECT_GT(0, string_3->CompareTo(string.Get()));
472 EXPECT_LT(0, string->CompareTo(string_4.Get()));
473 EXPECT_GT(0, string_4->CompareTo(string.Get()));
474 EXPECT_LT(0, string->CompareTo(string_5.Get()));
475 EXPECT_GT(0, string_5->CompareTo(string.Get()));
476 }
477
TEST_F(ObjectTest,StringLength)478 TEST_F(ObjectTest, StringLength) {
479 ScopedObjectAccess soa(Thread::Current());
480 StackHandleScope<1> hs(soa.Self());
481 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
482 EXPECT_EQ(string->GetLength(), 7);
483 EXPECT_EQ(string->GetUtfLength(), 7);
484 }
485
TEST_F(ObjectTest,DescriptorCompare)486 TEST_F(ObjectTest, DescriptorCompare) {
487 // Two classloaders conflicts in compile_time_class_paths_.
488 ScopedObjectAccess soa(Thread::Current());
489 ClassLinker* linker = class_linker_;
490
491 jobject jclass_loader_1 = LoadDex("ProtoCompare");
492 jobject jclass_loader_2 = LoadDex("ProtoCompare2");
493 StackHandleScope<4> hs(soa.Self());
494 Handle<ClassLoader> class_loader_1(hs.NewHandle(soa.Decode<ClassLoader*>(jclass_loader_1)));
495 Handle<ClassLoader> class_loader_2(hs.NewHandle(soa.Decode<ClassLoader*>(jclass_loader_2)));
496
497 Class* klass1 = linker->FindClass(soa.Self(), "LProtoCompare;", class_loader_1);
498 ASSERT_TRUE(klass1 != nullptr);
499 Class* klass2 = linker->FindClass(soa.Self(), "LProtoCompare2;", class_loader_2);
500 ASSERT_TRUE(klass2 != nullptr);
501
502 ArtMethod* m1_1 = klass1->GetVirtualMethod(0, sizeof(void*));
503 EXPECT_STREQ(m1_1->GetName(), "m1");
504 ArtMethod* m2_1 = klass1->GetVirtualMethod(1, sizeof(void*));
505 EXPECT_STREQ(m2_1->GetName(), "m2");
506 ArtMethod* m3_1 = klass1->GetVirtualMethod(2, sizeof(void*));
507 EXPECT_STREQ(m3_1->GetName(), "m3");
508 ArtMethod* m4_1 = klass1->GetVirtualMethod(3, sizeof(void*));
509 EXPECT_STREQ(m4_1->GetName(), "m4");
510
511 ArtMethod* m1_2 = klass2->GetVirtualMethod(0, sizeof(void*));
512 EXPECT_STREQ(m1_2->GetName(), "m1");
513 ArtMethod* m2_2 = klass2->GetVirtualMethod(1, sizeof(void*));
514 EXPECT_STREQ(m2_2->GetName(), "m2");
515 ArtMethod* m3_2 = klass2->GetVirtualMethod(2, sizeof(void*));
516 EXPECT_STREQ(m3_2->GetName(), "m3");
517 ArtMethod* m4_2 = klass2->GetVirtualMethod(3, sizeof(void*));
518 EXPECT_STREQ(m4_2->GetName(), "m4");
519 }
520
TEST_F(ObjectTest,StringHashCode)521 TEST_F(ObjectTest, StringHashCode) {
522 ScopedObjectAccess soa(Thread::Current());
523 StackHandleScope<3> hs(soa.Self());
524 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
525 Handle<String> A(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "A")));
526 Handle<String> ABC(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
527
528 EXPECT_EQ(0, empty->GetHashCode());
529 EXPECT_EQ(65, A->GetHashCode());
530 EXPECT_EQ(64578, ABC->GetHashCode());
531 }
532
TEST_F(ObjectTest,InstanceOf)533 TEST_F(ObjectTest, InstanceOf) {
534 ScopedObjectAccess soa(Thread::Current());
535 jobject jclass_loader = LoadDex("XandY");
536 StackHandleScope<3> hs(soa.Self());
537 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader*>(jclass_loader)));
538
539 Class* X = class_linker_->FindClass(soa.Self(), "LX;", class_loader);
540 Class* Y = class_linker_->FindClass(soa.Self(), "LY;", class_loader);
541 ASSERT_TRUE(X != nullptr);
542 ASSERT_TRUE(Y != nullptr);
543
544 Handle<Object> x(hs.NewHandle(X->AllocObject(soa.Self())));
545 Handle<Object> y(hs.NewHandle(Y->AllocObject(soa.Self())));
546 ASSERT_TRUE(x.Get() != nullptr);
547 ASSERT_TRUE(y.Get() != nullptr);
548
549 EXPECT_TRUE(x->InstanceOf(X));
550 EXPECT_FALSE(x->InstanceOf(Y));
551 EXPECT_TRUE(y->InstanceOf(X));
552 EXPECT_TRUE(y->InstanceOf(Y));
553
554 Class* java_lang_Class = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Class;");
555 Class* Object_array_class = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;");
556
557 EXPECT_FALSE(java_lang_Class->InstanceOf(Object_array_class));
558 EXPECT_TRUE(Object_array_class->InstanceOf(java_lang_Class));
559
560 // All array classes implement Cloneable and Serializable.
561 Object* array = ObjectArray<Object>::Alloc(soa.Self(), Object_array_class, 1);
562 Class* java_lang_Cloneable =
563 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Cloneable;");
564 Class* java_io_Serializable =
565 class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;");
566 EXPECT_TRUE(array->InstanceOf(java_lang_Cloneable));
567 EXPECT_TRUE(array->InstanceOf(java_io_Serializable));
568 }
569
TEST_F(ObjectTest,IsAssignableFrom)570 TEST_F(ObjectTest, IsAssignableFrom) {
571 ScopedObjectAccess soa(Thread::Current());
572 jobject jclass_loader = LoadDex("XandY");
573 StackHandleScope<1> hs(soa.Self());
574 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader*>(jclass_loader)));
575 Class* X = class_linker_->FindClass(soa.Self(), "LX;", class_loader);
576 Class* Y = class_linker_->FindClass(soa.Self(), "LY;", class_loader);
577
578 EXPECT_TRUE(X->IsAssignableFrom(X));
579 EXPECT_TRUE(X->IsAssignableFrom(Y));
580 EXPECT_FALSE(Y->IsAssignableFrom(X));
581 EXPECT_TRUE(Y->IsAssignableFrom(Y));
582
583 // class final String implements CharSequence, ..
584 Class* string = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/String;");
585 Class* charseq = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/CharSequence;");
586 // Can String be assigned to CharSequence without a cast?
587 EXPECT_TRUE(charseq->IsAssignableFrom(string));
588 // Can CharSequence be assigned to String without a cast?
589 EXPECT_FALSE(string->IsAssignableFrom(charseq));
590
591 // Primitive types are only assignable to themselves
592 const char* prims = "ZBCSIJFD";
593 Class* prim_types[strlen(prims)];
594 for (size_t i = 0; i < strlen(prims); i++) {
595 prim_types[i] = class_linker_->FindPrimitiveClass(prims[i]);
596 }
597 for (size_t i = 0; i < strlen(prims); i++) {
598 for (size_t j = 0; i < strlen(prims); i++) {
599 if (i == j) {
600 EXPECT_TRUE(prim_types[i]->IsAssignableFrom(prim_types[j]));
601 } else {
602 EXPECT_FALSE(prim_types[i]->IsAssignableFrom(prim_types[j]));
603 }
604 }
605 }
606 }
607
TEST_F(ObjectTest,IsAssignableFromArray)608 TEST_F(ObjectTest, IsAssignableFromArray) {
609 ScopedObjectAccess soa(Thread::Current());
610 jobject jclass_loader = LoadDex("XandY");
611 StackHandleScope<1> hs(soa.Self());
612 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader*>(jclass_loader)));
613 Class* X = class_linker_->FindClass(soa.Self(), "LX;", class_loader);
614 Class* Y = class_linker_->FindClass(soa.Self(), "LY;", class_loader);
615 ASSERT_TRUE(X != nullptr);
616 ASSERT_TRUE(Y != nullptr);
617
618 Class* YA = class_linker_->FindClass(soa.Self(), "[LY;", class_loader);
619 Class* YAA = class_linker_->FindClass(soa.Self(), "[[LY;", class_loader);
620 ASSERT_TRUE(YA != nullptr);
621 ASSERT_TRUE(YAA != nullptr);
622
623 Class* XAA = class_linker_->FindClass(soa.Self(), "[[LX;", class_loader);
624 ASSERT_TRUE(XAA != nullptr);
625
626 Class* O = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
627 Class* OA = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;");
628 Class* OAA = class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;");
629 Class* OAAA = class_linker_->FindSystemClass(soa.Self(), "[[[Ljava/lang/Object;");
630 ASSERT_TRUE(O != nullptr);
631 ASSERT_TRUE(OA != nullptr);
632 ASSERT_TRUE(OAA != nullptr);
633 ASSERT_TRUE(OAAA != nullptr);
634
635 Class* S = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;");
636 Class* SA = class_linker_->FindSystemClass(soa.Self(), "[Ljava/io/Serializable;");
637 Class* SAA = class_linker_->FindSystemClass(soa.Self(), "[[Ljava/io/Serializable;");
638 ASSERT_TRUE(S != nullptr);
639 ASSERT_TRUE(SA != nullptr);
640 ASSERT_TRUE(SAA != nullptr);
641
642 Class* IA = class_linker_->FindSystemClass(soa.Self(), "[I");
643 ASSERT_TRUE(IA != nullptr);
644
645 EXPECT_TRUE(YAA->IsAssignableFrom(YAA)); // identity
646 EXPECT_TRUE(XAA->IsAssignableFrom(YAA)); // element superclass
647 EXPECT_FALSE(YAA->IsAssignableFrom(XAA));
648 EXPECT_FALSE(Y->IsAssignableFrom(YAA));
649 EXPECT_FALSE(YA->IsAssignableFrom(YAA));
650 EXPECT_TRUE(O->IsAssignableFrom(YAA)); // everything is an Object
651 EXPECT_TRUE(OA->IsAssignableFrom(YAA));
652 EXPECT_TRUE(OAA->IsAssignableFrom(YAA));
653 EXPECT_TRUE(S->IsAssignableFrom(YAA)); // all arrays are Serializable
654 EXPECT_TRUE(SA->IsAssignableFrom(YAA));
655 EXPECT_FALSE(SAA->IsAssignableFrom(YAA)); // unless Y was Serializable
656
657 EXPECT_FALSE(IA->IsAssignableFrom(OA));
658 EXPECT_FALSE(OA->IsAssignableFrom(IA));
659 EXPECT_TRUE(O->IsAssignableFrom(IA));
660 }
661
TEST_F(ObjectTest,FindInstanceField)662 TEST_F(ObjectTest, FindInstanceField) {
663 ScopedObjectAccess soa(Thread::Current());
664 StackHandleScope<1> hs(soa.Self());
665 Handle<String> s(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
666 ASSERT_TRUE(s.Get() != nullptr);
667 Class* c = s->GetClass();
668 ASSERT_TRUE(c != nullptr);
669
670 // Wrong type.
671 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "J") == nullptr);
672 EXPECT_TRUE(c->FindInstanceField("count", "J") == nullptr);
673
674 // Wrong name.
675 EXPECT_TRUE(c->FindDeclaredInstanceField("Count", "I") == nullptr);
676 EXPECT_TRUE(c->FindInstanceField("Count", "I") == nullptr);
677
678 // Right name and type.
679 ArtField* f1 = c->FindDeclaredInstanceField("count", "I");
680 ArtField* f2 = c->FindInstanceField("count", "I");
681 EXPECT_TRUE(f1 != nullptr);
682 EXPECT_TRUE(f2 != nullptr);
683 EXPECT_EQ(f1, f2);
684
685 // TODO: check that s.count == 3.
686
687 // Ensure that we handle superclass fields correctly...
688 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/StringBuilder;");
689 ASSERT_TRUE(c != nullptr);
690 // No StringBuilder.count...
691 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "I") == nullptr);
692 // ...but there is an AbstractStringBuilder.count.
693 EXPECT_TRUE(c->FindInstanceField("count", "I") != nullptr);
694 }
695
TEST_F(ObjectTest,FindStaticField)696 TEST_F(ObjectTest, FindStaticField) {
697 ScopedObjectAccess soa(Thread::Current());
698 StackHandleScope<4> hs(soa.Self());
699 Handle<String> s(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
700 ASSERT_TRUE(s.Get() != nullptr);
701 Handle<Class> c(hs.NewHandle(s->GetClass()));
702 ASSERT_TRUE(c.Get() != nullptr);
703
704 // Wrong type.
705 EXPECT_TRUE(c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "I") == nullptr);
706 EXPECT_TRUE(mirror::Class::FindStaticField(
707 soa.Self(), c, "CASE_INSENSITIVE_ORDER", "I") == nullptr);
708
709 // Wrong name.
710 EXPECT_TRUE(c->FindDeclaredStaticField(
711 "cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == nullptr);
712 EXPECT_TRUE(
713 mirror::Class::FindStaticField(soa.Self(), c, "cASE_INSENSITIVE_ORDER",
714 "Ljava/util/Comparator;") == nullptr);
715
716 // Right name and type.
717 ArtField* f1 = c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
718 ArtField* f2 = mirror::Class::FindStaticField(soa.Self(), c, "CASE_INSENSITIVE_ORDER",
719 "Ljava/util/Comparator;");
720 EXPECT_TRUE(f1 != nullptr);
721 EXPECT_TRUE(f2 != nullptr);
722 EXPECT_EQ(f1, f2);
723
724 // TODO: test static fields via superclasses.
725 // TODO: test static fields via interfaces.
726 // TODO: test that interfaces trump superclasses.
727 }
728
TEST_F(ObjectTest,IdentityHashCode)729 TEST_F(ObjectTest, IdentityHashCode) {
730 // Regression test for b/19046417 which had an infinite loop if the
731 // (seed & LockWord::kHashMask) == 0. seed 0 triggered the infinite loop since we did the check
732 // before the CAS which resulted in the same seed the next loop iteration.
733 mirror::Object::SetHashCodeSeed(0);
734 int32_t hash_code = mirror::Object::GenerateIdentityHashCode();
735 EXPECT_NE(hash_code, 0);
736 }
737
738 } // namespace mirror
739 } // namespace art
740