203 lines
9.3 KiB
C++
203 lines
9.3 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <jni.h>
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#include <vector>
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#include "common_compiler_test.h"
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#include "field_helper.h"
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#include "mirror/art_field-inl.h"
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#include "scoped_thread_state_change.h"
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namespace art {
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class ProxyTest : public CommonCompilerTest {
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public:
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// Generate a proxy class with the given name and interfaces. This is a simplification from what
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// libcore does to fit to our test needs. We do not check for duplicated interfaces or methods and
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// we do not declare exceptions.
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mirror::Class* GenerateProxyClass(ScopedObjectAccess& soa, jobject jclass_loader,
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const char* className,
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const std::vector<mirror::Class*>& interfaces)
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SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
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mirror::Class* javaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
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CHECK(javaLangObject != nullptr);
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jclass javaLangClass = soa.AddLocalReference<jclass>(mirror::Class::GetJavaLangClass());
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// Builds the interfaces array.
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jobjectArray proxyClassInterfaces = soa.Env()->NewObjectArray(interfaces.size(), javaLangClass,
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nullptr);
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soa.Self()->AssertNoPendingException();
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for (size_t i = 0; i < interfaces.size(); ++i) {
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soa.Env()->SetObjectArrayElement(proxyClassInterfaces, i,
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soa.AddLocalReference<jclass>(interfaces[i]));
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}
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// Builds the method array.
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jsize methods_count = 3; // Object.equals, Object.hashCode and Object.toString.
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for (mirror::Class* interface : interfaces) {
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mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
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methods_count += (virtual_methods == nullptr) ? 0 : virtual_methods->GetLength();
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}
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jclass javaLangReflectArtMethod =
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soa.AddLocalReference<jclass>(mirror::ArtMethod::GetJavaLangReflectArtMethod());
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jobjectArray proxyClassMethods = soa.Env()->NewObjectArray(methods_count,
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javaLangReflectArtMethod, nullptr);
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soa.Self()->AssertNoPendingException();
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// Fill the method array
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mirror::ArtMethod* equalsMethod = javaLangObject->FindDeclaredVirtualMethod("equals",
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"(Ljava/lang/Object;)Z");
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mirror::ArtMethod* hashCodeMethod = javaLangObject->FindDeclaredVirtualMethod("hashCode",
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"()I");
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mirror::ArtMethod* toStringMethod = javaLangObject->FindDeclaredVirtualMethod("toString",
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"()Ljava/lang/String;");
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CHECK(equalsMethod != nullptr);
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CHECK(hashCodeMethod != nullptr);
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CHECK(toStringMethod != nullptr);
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jsize array_index = 0;
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// Adds Object methods.
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soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
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soa.AddLocalReference<jobject>(equalsMethod));
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soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
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soa.AddLocalReference<jobject>(hashCodeMethod));
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soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
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soa.AddLocalReference<jobject>(toStringMethod));
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// Now adds all interfaces virtual methods.
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for (mirror::Class* interface : interfaces) {
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mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
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if (virtual_methods != nullptr) {
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for (int32_t mth_index = 0; mth_index < virtual_methods->GetLength(); ++mth_index) {
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mirror::ArtMethod* method = virtual_methods->Get(mth_index);
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soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
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soa.AddLocalReference<jobject>(method));
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}
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}
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}
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CHECK_EQ(array_index, methods_count);
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// Builds an empty exception array.
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jobjectArray proxyClassThrows = soa.Env()->NewObjectArray(0, javaLangClass, nullptr);
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soa.Self()->AssertNoPendingException();
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mirror::Class* proxyClass = class_linker_->CreateProxyClass(soa,
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soa.Env()->NewStringUTF(className),
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proxyClassInterfaces, jclass_loader,
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proxyClassMethods, proxyClassThrows);
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soa.Self()->AssertNoPendingException();
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return proxyClass;
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}
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};
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// Creates a proxy class and check ClassHelper works correctly.
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TEST_F(ProxyTest, ProxyClassHelper) {
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ScopedObjectAccess soa(Thread::Current());
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jobject jclass_loader = LoadDex("Interfaces");
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StackHandleScope<4> hs(soa.Self());
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Handle<mirror::ClassLoader> class_loader(
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hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
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Handle<mirror::Class> I(hs.NewHandle(
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class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
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Handle<mirror::Class> J(hs.NewHandle(
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class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
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ASSERT_TRUE(I.Get() != nullptr);
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ASSERT_TRUE(J.Get() != nullptr);
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std::vector<mirror::Class*> interfaces;
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interfaces.push_back(I.Get());
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interfaces.push_back(J.Get());
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Handle<mirror::Class> proxy_class(hs.NewHandle(
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GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces)));
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interfaces.clear(); // Don't least possibly stale objects in the array as good practice.
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ASSERT_TRUE(proxy_class.Get() != nullptr);
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ASSERT_TRUE(proxy_class->IsProxyClass());
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ASSERT_TRUE(proxy_class->IsInitialized());
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EXPECT_EQ(2U, proxy_class->NumDirectInterfaces()); // Interfaces$I and Interfaces$J.
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EXPECT_EQ(I.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 0));
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EXPECT_EQ(J.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 1));
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std::string temp;
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const char* proxy_class_descriptor = proxy_class->GetDescriptor(&temp);
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EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor);
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EXPECT_EQ(nullptr, proxy_class->GetSourceFile());
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}
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// Creates a proxy class and check FieldHelper works correctly.
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TEST_F(ProxyTest, ProxyFieldHelper) {
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ScopedObjectAccess soa(Thread::Current());
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jobject jclass_loader = LoadDex("Interfaces");
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StackHandleScope<9> hs(soa.Self());
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Handle<mirror::ClassLoader> class_loader(
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hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
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Handle<mirror::Class> I(hs.NewHandle(
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class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
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Handle<mirror::Class> J(hs.NewHandle(
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class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
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ASSERT_TRUE(I.Get() != nullptr);
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ASSERT_TRUE(J.Get() != nullptr);
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Handle<mirror::Class> proxyClass;
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{
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std::vector<mirror::Class*> interfaces;
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interfaces.push_back(I.Get());
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interfaces.push_back(J.Get());
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proxyClass = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces));
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}
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ASSERT_TRUE(proxyClass.Get() != nullptr);
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ASSERT_TRUE(proxyClass->IsProxyClass());
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ASSERT_TRUE(proxyClass->IsInitialized());
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Handle<mirror::ObjectArray<mirror::ArtField>> instance_fields(
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hs.NewHandle(proxyClass->GetIFields()));
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EXPECT_TRUE(instance_fields.Get() == nullptr);
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Handle<mirror::ObjectArray<mirror::ArtField>> static_fields(
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hs.NewHandle(proxyClass->GetSFields()));
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ASSERT_TRUE(static_fields.Get() != nullptr);
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ASSERT_EQ(2, static_fields->GetLength());
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Handle<mirror::Class> interfacesFieldClass(
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hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;")));
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ASSERT_TRUE(interfacesFieldClass.Get() != nullptr);
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Handle<mirror::Class> throwsFieldClass(
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hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;")));
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ASSERT_TRUE(throwsFieldClass.Get() != nullptr);
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// Test "Class[] interfaces" field.
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FieldHelper fh(hs.NewHandle(static_fields->Get(0)));
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EXPECT_EQ("interfaces", std::string(fh.GetField()->GetName()));
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EXPECT_EQ("[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
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EXPECT_EQ(interfacesFieldClass.Get(), fh.GetType());
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EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
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EXPECT_FALSE(fh.GetField()->IsPrimitiveType());
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// Test "Class[][] throws" field.
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fh.ChangeField(static_fields->Get(1));
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EXPECT_EQ("throws", std::string(fh.GetField()->GetName()));
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EXPECT_EQ("[[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
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EXPECT_EQ(throwsFieldClass.Get(), fh.GetType());
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EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
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EXPECT_FALSE(fh.GetField()->IsPrimitiveType());
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}
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} // namespace art
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