1 /*
2  * Copyright (C) 2014 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 <jni.h>
18 #include <vector>
19 
20 #include "art_field-inl.h"
21 #include "base/pointer_size.h"
22 #include "common_runtime_test.h"
23 #include "mirror/field.h"
24 #include "proxy_test.h"
25 #include "scoped_thread_state_change-inl.h"
26 #include "well_known_classes.h"
27 
28 namespace art HIDDEN {
29 namespace proxy_test {
30 
31 class ProxyTest : public CommonRuntimeTest {
32  protected:
ProxyTest()33   ProxyTest() {
34     use_boot_image_ = true;  // Make the Runtime creation cheaper.
35   }
36 };
37 
38 // Creates a proxy class and check ClassHelper works correctly.
TEST_F(ProxyTest,ProxyClassHelper)39 TEST_F(ProxyTest, ProxyClassHelper) {
40   ScopedObjectAccess soa(Thread::Current());
41   jobject jclass_loader = LoadDex("Interfaces");
42   StackHandleScope<4> hs(soa.Self());
43   Handle<mirror::ClassLoader> class_loader(
44       hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
45 
46   Handle<mirror::Class> I(hs.NewHandle(
47       class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
48   Handle<mirror::Class> J(hs.NewHandle(
49       class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
50   ASSERT_TRUE(I != nullptr);
51   ASSERT_TRUE(J != nullptr);
52 
53   std::vector<Handle<mirror::Class>> interfaces;
54   interfaces.push_back(I);
55   interfaces.push_back(J);
56   Handle<mirror::Class> proxy_class(hs.NewHandle(
57       GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy1234", interfaces)));
58   interfaces.clear();  // Don't least possibly stale objects in the array as good practice.
59   ASSERT_TRUE(proxy_class != nullptr);
60   ASSERT_TRUE(proxy_class->IsProxyClass());
61   ASSERT_TRUE(proxy_class->IsInitialized());
62 
63   EXPECT_EQ(2U, proxy_class->NumDirectInterfaces());  // Interfaces$I and Interfaces$J.
64   EXPECT_OBJ_PTR_EQ(I.Get(), proxy_class->GetDirectInterface(0));
65   EXPECT_OBJ_PTR_EQ(J.Get(), proxy_class->GetDirectInterface(1));
66   std::string temp;
67   const char* proxy_class_descriptor = proxy_class->GetDescriptor(&temp);
68   EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor);
69   EXPECT_EQ(nullptr, proxy_class->GetSourceFile());
70 }
71 
72 // Creates a proxy class and check FieldHelper works correctly.
TEST_F(ProxyTest,ProxyFieldHelper)73 TEST_F(ProxyTest, ProxyFieldHelper) {
74   ScopedObjectAccess soa(Thread::Current());
75   jobject jclass_loader = LoadDex("Interfaces");
76   StackHandleScope<9> hs(soa.Self());
77   Handle<mirror::ClassLoader> class_loader(
78       hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
79 
80   Handle<mirror::Class> I(hs.NewHandle(
81       class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
82   Handle<mirror::Class> J(hs.NewHandle(
83       class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
84   ASSERT_TRUE(I != nullptr);
85   ASSERT_TRUE(J != nullptr);
86 
87   Handle<mirror::Class> proxyClass;
88   {
89     std::vector<Handle<mirror::Class>> interfaces;
90     interfaces.push_back(I);
91     interfaces.push_back(J);
92     proxyClass = hs.NewHandle(
93         GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy1234", interfaces));
94   }
95 
96   ASSERT_TRUE(proxyClass != nullptr);
97   ASSERT_TRUE(proxyClass->IsProxyClass());
98   ASSERT_TRUE(proxyClass->IsInitialized());
99 
100   EXPECT_TRUE(proxyClass->GetIFieldsPtr() == nullptr);
101 
102   LengthPrefixedArray<ArtField>* static_fields = proxyClass->GetSFieldsPtr();
103   ASSERT_TRUE(static_fields != nullptr);
104   ASSERT_EQ(2u, proxyClass->NumStaticFields());
105 
106   Handle<mirror::Class> interfacesFieldClass(
107       hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;")));
108   ASSERT_TRUE(interfacesFieldClass != nullptr);
109   Handle<mirror::Class> throwsFieldClass(
110       hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;")));
111   ASSERT_TRUE(throwsFieldClass != nullptr);
112 
113   // Test "Class[] interfaces" field.
114   ArtField* field = &static_fields->At(0);
115   EXPECT_STREQ("interfaces", field->GetName());
116   EXPECT_STREQ("[Ljava/lang/Class;", field->GetTypeDescriptor());
117   EXPECT_EQ("[Ljava/lang/Class;", field->GetTypeDescriptorView());
118   EXPECT_OBJ_PTR_EQ(interfacesFieldClass.Get(), field->ResolveType());
119   std::string temp;
120   EXPECT_STREQ("L$Proxy1234;", field->GetDeclaringClass()->GetDescriptor(&temp));
121   EXPECT_FALSE(field->IsPrimitiveType());
122 
123   // Test "Class[][] throws" field.
124   field = &static_fields->At(1);
125   EXPECT_STREQ("throws", field->GetName());
126   EXPECT_STREQ("[[Ljava/lang/Class;", field->GetTypeDescriptor());
127   EXPECT_EQ("[[Ljava/lang/Class;", field->GetTypeDescriptorView());
128   EXPECT_OBJ_PTR_EQ(throwsFieldClass.Get(), field->ResolveType());
129   EXPECT_STREQ("L$Proxy1234;", field->GetDeclaringClass()->GetDescriptor(&temp));
130   EXPECT_FALSE(field->IsPrimitiveType());
131 }
132 
133 // Creates two proxy classes and check the art/mirror fields of their static fields.
TEST_F(ProxyTest,CheckArtMirrorFieldsOfProxyStaticFields)134 TEST_F(ProxyTest, CheckArtMirrorFieldsOfProxyStaticFields) {
135   ScopedObjectAccess soa(Thread::Current());
136   jobject jclass_loader = LoadDex("Interfaces");
137   StackHandleScope<7> hs(soa.Self());
138 
139   Handle<mirror::Class> proxyClass0;
140   Handle<mirror::Class> proxyClass1;
141   {
142     std::vector<Handle<mirror::Class>> interfaces;
143     proxyClass0 = hs.NewHandle(
144         GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy0", interfaces));
145     proxyClass1 = hs.NewHandle(
146         GenerateProxyClass(soa, jclass_loader, class_linker_, "$Proxy1", interfaces));
147   }
148 
149   ASSERT_TRUE(proxyClass0 != nullptr);
150   ASSERT_TRUE(proxyClass0->IsProxyClass());
151   ASSERT_TRUE(proxyClass0->IsInitialized());
152   ASSERT_TRUE(proxyClass1 != nullptr);
153   ASSERT_TRUE(proxyClass1->IsProxyClass());
154   ASSERT_TRUE(proxyClass1->IsInitialized());
155 
156   LengthPrefixedArray<ArtField>* static_fields0 = proxyClass0->GetSFieldsPtr();
157   ASSERT_TRUE(static_fields0 != nullptr);
158   ASSERT_EQ(2u, static_fields0->size());
159   LengthPrefixedArray<ArtField>* static_fields1 = proxyClass1->GetSFieldsPtr();
160   ASSERT_TRUE(static_fields1 != nullptr);
161   ASSERT_EQ(2u, static_fields1->size());
162 
163   EXPECT_OBJ_PTR_EQ(static_fields0->At(0).GetDeclaringClass(), proxyClass0.Get());
164   EXPECT_OBJ_PTR_EQ(static_fields0->At(1).GetDeclaringClass(), proxyClass0.Get());
165   EXPECT_OBJ_PTR_EQ(static_fields1->At(0).GetDeclaringClass(), proxyClass1.Get());
166   EXPECT_OBJ_PTR_EQ(static_fields1->At(1).GetDeclaringClass(), proxyClass1.Get());
167 
168   ASSERT_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize);
169   ASSERT_FALSE(Runtime::Current()->IsActiveTransaction());
170   Handle<mirror::Field> field00 =
171       hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields0->At(0), true));
172   Handle<mirror::Field> field01 =
173       hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields0->At(1), true));
174   Handle<mirror::Field> field10 =
175       hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields1->At(0), true));
176   Handle<mirror::Field> field11 =
177       hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields1->At(1), true));
178   EXPECT_EQ(field00->GetArtField(), &static_fields0->At(0));
179   EXPECT_EQ(field01->GetArtField(), &static_fields0->At(1));
180   EXPECT_EQ(field10->GetArtField(), &static_fields1->At(0));
181   EXPECT_EQ(field11->GetArtField(), &static_fields1->At(1));
182 }
183 
184 }  // namespace proxy_test
185 }  // namespace art
186