runtime/proxy_test.cc - platform/art - Gitiles

 /*
  * Copyright (C) 2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include <jni.h>
 #include <vector>

 #include "common_compiler_test.h"
 #include "field_helper.h"
 #include "mirror/art_field-inl.h"
 #include "scoped_thread_state_change.h"

 namespace art {

 class ProxyTest : public CommonCompilerTest {
  public:
   // Generate a proxy class with the given name and interfaces. This is a simplification from what
   // libcore does to fit to our test needs. We do not check for duplicated interfaces or methods and
   // we do not declare exceptions.
   mirror::Class* GenerateProxyClass(ScopedObjectAccess& soa, jobject jclass_loader,
                                     const char* className,
                                     const std::vector<mirror::Class*>& interfaces)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     mirror::Class* javaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
     CHECK(javaLangObject != nullptr);

     jclass javaLangClass = soa.AddLocalReference<jclass>(mirror::Class::GetJavaLangClass());

     // Builds the interfaces array.
     jobjectArray proxyClassInterfaces = soa.Env()->NewObjectArray(interfaces.size(), javaLangClass,
                                                                   nullptr);
     soa.Self()->AssertNoPendingException();
     for (size_t i = 0; i < interfaces.size(); ++i) {
       soa.Env()->SetObjectArrayElement(proxyClassInterfaces, i,
                                        soa.AddLocalReference<jclass>(interfaces[i]));
     }

     // Builds the method array.
     jsize methods_count = 3;  // Object.equals, Object.hashCode and Object.toString.
     for (mirror::Class* interface : interfaces) {
       mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
       methods_count += (virtual_methods == nullptr) ? 0 : virtual_methods->GetLength();
     }
     jclass javaLangReflectArtMethod =
         soa.AddLocalReference<jclass>(mirror::ArtMethod::GetJavaLangReflectArtMethod());
     jobjectArray proxyClassMethods = soa.Env()->NewObjectArray(methods_count,
                                                                javaLangReflectArtMethod, nullptr);
     soa.Self()->AssertNoPendingException();

     // Fill the method array
     mirror::ArtMethod* equalsMethod = javaLangObject->FindDeclaredVirtualMethod("equals",
                                                                                 "(Ljava/lang/Object;)Z");
     mirror::ArtMethod* hashCodeMethod = javaLangObject->FindDeclaredVirtualMethod("hashCode",
                                                                                   "()I");
     mirror::ArtMethod* toStringMethod = javaLangObject->FindDeclaredVirtualMethod("toString",
                                                                                   "()Ljava/lang/String;");
     CHECK(equalsMethod != nullptr);
     CHECK(hashCodeMethod != nullptr);
     CHECK(toStringMethod != nullptr);

     jsize array_index = 0;
     // Adds Object methods.
     soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
                                      soa.AddLocalReference<jobject>(equalsMethod));
     soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
                                      soa.AddLocalReference<jobject>(hashCodeMethod));
     soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
                                      soa.AddLocalReference<jobject>(toStringMethod));

     // Now adds all interfaces virtual methods.
     for (mirror::Class* interface : interfaces) {
       mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
       if (virtual_methods != nullptr) {
         for (int32_t mth_index = 0; mth_index < virtual_methods->GetLength(); ++mth_index) {
           mirror::ArtMethod* method = virtual_methods->Get(mth_index);
           soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
                                            soa.AddLocalReference<jobject>(method));
         }
       }
     }
     CHECK_EQ(array_index, methods_count);

     // Builds an empty exception array.
     jobjectArray proxyClassThrows = soa.Env()->NewObjectArray(0, javaLangClass, nullptr);
     soa.Self()->AssertNoPendingException();

     mirror::Class* proxyClass = class_linker_->CreateProxyClass(soa,
                                                                 soa.Env()->NewStringUTF(className),
                                                                 proxyClassInterfaces, jclass_loader,
                                                                 proxyClassMethods, proxyClassThrows);
     soa.Self()->AssertNoPendingException();
     return proxyClass;
   }
 };

 // Creates a proxy class and check ClassHelper works correctly.
 TEST_F(ProxyTest, ProxyClassHelper) {
   ScopedObjectAccess soa(Thread::Current());
   jobject jclass_loader = LoadDex("Interfaces");
   StackHandleScope<4> hs(soa.Self());
   Handle<mirror::ClassLoader> class_loader(
       hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));

   Handle<mirror::Class> I(hs.NewHandle(
       class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
   Handle<mirror::Class> J(hs.NewHandle(
       class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
   ASSERT_TRUE(I.Get() != nullptr);
   ASSERT_TRUE(J.Get() != nullptr);

   std::vector<mirror::Class*> interfaces;
   interfaces.push_back(I.Get());
   interfaces.push_back(J.Get());
   Handle<mirror::Class> proxy_class(hs.NewHandle(
       GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces)));
   interfaces.clear();  // Don't least possibly stale objects in the array as good practice.
   ASSERT_TRUE(proxy_class.Get() != nullptr);
   ASSERT_TRUE(proxy_class->IsProxyClass());
   ASSERT_TRUE(proxy_class->IsInitialized());

   EXPECT_EQ(2U, proxy_class->NumDirectInterfaces());  // Interfaces$I and Interfaces$J.
   EXPECT_EQ(I.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 0));
   EXPECT_EQ(J.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 1));
   std::string proxy_class_descriptor(proxy_class->GetDescriptor());
   EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor.c_str());
   EXPECT_EQ(nullptr, proxy_class->GetSourceFile());
 }

 // Creates a proxy class and check FieldHelper works correctly.
 TEST_F(ProxyTest, ProxyFieldHelper) {
   ScopedObjectAccess soa(Thread::Current());
   jobject jclass_loader = LoadDex("Interfaces");
   StackHandleScope<9> hs(soa.Self());
   Handle<mirror::ClassLoader> class_loader(
       hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));

   Handle<mirror::Class> I(hs.NewHandle(
       class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
   Handle<mirror::Class> J(hs.NewHandle(
       class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
   ASSERT_TRUE(I.Get() != nullptr);
   ASSERT_TRUE(J.Get() != nullptr);

   Handle<mirror::Class> proxyClass;
   {
     std::vector<mirror::Class*> interfaces;
     interfaces.push_back(I.Get());
     interfaces.push_back(J.Get());
     proxyClass = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces));
   }

   ASSERT_TRUE(proxyClass.Get() != nullptr);
   ASSERT_TRUE(proxyClass->IsProxyClass());
   ASSERT_TRUE(proxyClass->IsInitialized());

   Handle<mirror::ObjectArray<mirror::ArtField>> instance_fields(
       hs.NewHandle(proxyClass->GetIFields()));
   EXPECT_TRUE(instance_fields.Get() == nullptr);

   Handle<mirror::ObjectArray<mirror::ArtField>> static_fields(
       hs.NewHandle(proxyClass->GetSFields()));
   ASSERT_TRUE(static_fields.Get() != nullptr);
   ASSERT_EQ(2, static_fields->GetLength());

   Handle<mirror::Class> interfacesFieldClass(
       hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;")));
   ASSERT_TRUE(interfacesFieldClass.Get() != nullptr);
   Handle<mirror::Class> throwsFieldClass(
       hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;")));
   ASSERT_TRUE(throwsFieldClass.Get() != nullptr);

   // Test "Class[] interfaces" field.
   FieldHelper fh(hs.NewHandle(static_fields->Get(0)));
   EXPECT_EQ("interfaces", std::string(fh.GetField()->GetName()));
   EXPECT_EQ("[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
   EXPECT_EQ(interfacesFieldClass.Get(), fh.GetType());
   EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
   EXPECT_FALSE(fh.GetField()->IsPrimitiveType());

   // Test "Class[][] throws" field.
   fh.ChangeField(static_fields->Get(1));
   EXPECT_EQ("throws", std::string(fh.GetField()->GetName()));
   EXPECT_EQ("[[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
   EXPECT_EQ(throwsFieldClass.Get(), fh.GetType());
   EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
   EXPECT_FALSE(fh.GetField()->IsPrimitiveType());
 }

 }  // namespace art
	/*
	* Copyright (C) 2014 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include <jni.h>
	#include <vector>

	#include "common_compiler_test.h"
	#include "field_helper.h"
	#include "mirror/art_field-inl.h"
	#include "scoped_thread_state_change.h"

	namespace art {

	class ProxyTest : public CommonCompilerTest {
	public:
	// Generate a proxy class with the given name and interfaces. This is a simplification from what
	// libcore does to fit to our test needs. We do not check for duplicated interfaces or methods and
	// we do not declare exceptions.
	mirror::Class* GenerateProxyClass(ScopedObjectAccess& soa, jobject jclass_loader,
	const char* className,
	const std::vector<mirror::Class*>& interfaces)
	SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
	mirror::Class* javaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
	CHECK(javaLangObject != nullptr);

	jclass javaLangClass = soa.AddLocalReference<jclass>(mirror::Class::GetJavaLangClass());

	// Builds the interfaces array.
	jobjectArray proxyClassInterfaces = soa.Env()->NewObjectArray(interfaces.size(), javaLangClass,
	nullptr);
	soa.Self()->AssertNoPendingException();
	for (size_t i = 0; i < interfaces.size(); ++i) {
	soa.Env()->SetObjectArrayElement(proxyClassInterfaces, i,
	soa.AddLocalReference<jclass>(interfaces[i]));
	}

	// Builds the method array.
	jsize methods_count = 3; // Object.equals, Object.hashCode and Object.toString.
	for (mirror::Class* interface : interfaces) {
	mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
	methods_count += (virtual_methods == nullptr) ? 0 : virtual_methods->GetLength();
	}
	jclass javaLangReflectArtMethod =
	soa.AddLocalReference<jclass>(mirror::ArtMethod::GetJavaLangReflectArtMethod());
	jobjectArray proxyClassMethods = soa.Env()->NewObjectArray(methods_count,
	javaLangReflectArtMethod, nullptr);
	soa.Self()->AssertNoPendingException();

	// Fill the method array
	mirror::ArtMethod* equalsMethod = javaLangObject->FindDeclaredVirtualMethod("equals",
	"(Ljava/lang/Object;)Z");
	mirror::ArtMethod* hashCodeMethod = javaLangObject->FindDeclaredVirtualMethod("hashCode",
	"()I");
	mirror::ArtMethod* toStringMethod = javaLangObject->FindDeclaredVirtualMethod("toString",
	"()Ljava/lang/String;");
	CHECK(equalsMethod != nullptr);
	CHECK(hashCodeMethod != nullptr);
	CHECK(toStringMethod != nullptr);

	jsize array_index = 0;
	// Adds Object methods.
	soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
	soa.AddLocalReference<jobject>(equalsMethod));
	soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
	soa.AddLocalReference<jobject>(hashCodeMethod));
	soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
	soa.AddLocalReference<jobject>(toStringMethod));

	// Now adds all interfaces virtual methods.
	for (mirror::Class* interface : interfaces) {
	mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
	if (virtual_methods != nullptr) {
	for (int32_t mth_index = 0; mth_index < virtual_methods->GetLength(); ++mth_index) {
	mirror::ArtMethod* method = virtual_methods->Get(mth_index);
	soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
	soa.AddLocalReference<jobject>(method));
	}
	}
	}
	CHECK_EQ(array_index, methods_count);

	// Builds an empty exception array.
	jobjectArray proxyClassThrows = soa.Env()->NewObjectArray(0, javaLangClass, nullptr);
	soa.Self()->AssertNoPendingException();

	mirror::Class* proxyClass = class_linker_->CreateProxyClass(soa,
	soa.Env()->NewStringUTF(className),
	proxyClassInterfaces, jclass_loader,
	proxyClassMethods, proxyClassThrows);
	soa.Self()->AssertNoPendingException();
	return proxyClass;
	}
	};

	// Creates a proxy class and check ClassHelper works correctly.
	TEST_F(ProxyTest, ProxyClassHelper) {
	ScopedObjectAccess soa(Thread::Current());
	jobject jclass_loader = LoadDex("Interfaces");
	StackHandleScope<4> hs(soa.Self());
	Handle<mirror::ClassLoader> class_loader(
	hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));

	Handle<mirror::Class> I(hs.NewHandle(
	class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
	Handle<mirror::Class> J(hs.NewHandle(
	class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
	ASSERT_TRUE(I.Get() != nullptr);
	ASSERT_TRUE(J.Get() != nullptr);

	std::vector<mirror::Class*> interfaces;
	interfaces.push_back(I.Get());
	interfaces.push_back(J.Get());
	Handle<mirror::Class> proxy_class(hs.NewHandle(
	GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces)));
	interfaces.clear(); // Don't least possibly stale objects in the array as good practice.
	ASSERT_TRUE(proxy_class.Get() != nullptr);
	ASSERT_TRUE(proxy_class->IsProxyClass());
	ASSERT_TRUE(proxy_class->IsInitialized());

	EXPECT_EQ(2U, proxy_class->NumDirectInterfaces()); // Interfaces$I and Interfaces$J.
	EXPECT_EQ(I.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 0));
	EXPECT_EQ(J.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 1));
	std::string proxy_class_descriptor(proxy_class->GetDescriptor());
	EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor.c_str());
	EXPECT_EQ(nullptr, proxy_class->GetSourceFile());
	}

	// Creates a proxy class and check FieldHelper works correctly.
	TEST_F(ProxyTest, ProxyFieldHelper) {
	ScopedObjectAccess soa(Thread::Current());
	jobject jclass_loader = LoadDex("Interfaces");
	StackHandleScope<9> hs(soa.Self());
	Handle<mirror::ClassLoader> class_loader(
	hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));

	Handle<mirror::Class> I(hs.NewHandle(
	class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
	Handle<mirror::Class> J(hs.NewHandle(
	class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
	ASSERT_TRUE(I.Get() != nullptr);
	ASSERT_TRUE(J.Get() != nullptr);

	Handle<mirror::Class> proxyClass;
	{
	std::vector<mirror::Class*> interfaces;
	interfaces.push_back(I.Get());
	interfaces.push_back(J.Get());
	proxyClass = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces));
	}

	ASSERT_TRUE(proxyClass.Get() != nullptr);
	ASSERT_TRUE(proxyClass->IsProxyClass());
	ASSERT_TRUE(proxyClass->IsInitialized());

	Handle<mirror::ObjectArray<mirror::ArtField>> instance_fields(
	hs.NewHandle(proxyClass->GetIFields()));
	EXPECT_TRUE(instance_fields.Get() == nullptr);

	Handle<mirror::ObjectArray<mirror::ArtField>> static_fields(
	hs.NewHandle(proxyClass->GetSFields()));
	ASSERT_TRUE(static_fields.Get() != nullptr);
	ASSERT_EQ(2, static_fields->GetLength());

	Handle<mirror::Class> interfacesFieldClass(
	hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;")));
	ASSERT_TRUE(interfacesFieldClass.Get() != nullptr);
	Handle<mirror::Class> throwsFieldClass(
	hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;")));
	ASSERT_TRUE(throwsFieldClass.Get() != nullptr);

	// Test "Class[] interfaces" field.
	FieldHelper fh(hs.NewHandle(static_fields->Get(0)));
	EXPECT_EQ("interfaces", std::string(fh.GetField()->GetName()));
	EXPECT_EQ("[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
	EXPECT_EQ(interfacesFieldClass.Get(), fh.GetType());
	EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
	EXPECT_FALSE(fh.GetField()->IsPrimitiveType());

	// Test "Class[][] throws" field.
	fh.ChangeField(static_fields->Get(1));
	EXPECT_EQ("throws", std::string(fh.GetField()->GetName()));
	EXPECT_EQ("[[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
	EXPECT_EQ(throwsFieldClass.Get(), fh.GetType());
	EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
	EXPECT_FALSE(fh.GetField()->IsPrimitiveType());
	}

	} // namespace art