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/*
* 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 "common_compiler_test.h"
#include "mirror/art_field-inl.h"
#include <jni.h>
#include <vector>
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<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
mirror::Class* I = class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader);
mirror::Class* J = class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader);
ASSERT_TRUE(I != nullptr);
ASSERT_TRUE(J != nullptr);
std::vector<mirror::Class*> interfaces;
interfaces.push_back(I);
interfaces.push_back(J);
mirror::Class* proxyClass = GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces);
ASSERT_TRUE(proxyClass != nullptr);
ASSERT_TRUE(proxyClass->IsProxyClass());
ASSERT_TRUE(proxyClass->IsInitialized());
// Check ClassHelper for proxy.
ClassHelper kh(proxyClass);
EXPECT_EQ(kh.NumDirectInterfaces(), 2U); // Interfaces$I and Interfaces$J.
EXPECT_EQ(I, kh.GetDirectInterface(0));
EXPECT_EQ(J, kh.GetDirectInterface(1));
std::string proxyClassDescriptor(kh.GetDescriptor());
EXPECT_EQ("L$Proxy1234;", proxyClassDescriptor);
}
// Creates a proxy class and check FieldHelper works correctly.
TEST_F(ProxyTest, ProxyFieldHelper) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("Interfaces");
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
mirror::Class* I = class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader);
mirror::Class* J = class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader);
ASSERT_TRUE(I != nullptr);
ASSERT_TRUE(J != nullptr);
std::vector<mirror::Class*> interfaces;
interfaces.push_back(I);
interfaces.push_back(J);
mirror::Class* proxyClass = GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces);
ASSERT_TRUE(proxyClass != nullptr);
ASSERT_TRUE(proxyClass->IsProxyClass());
ASSERT_TRUE(proxyClass->IsInitialized());
mirror::ObjectArray<mirror::ArtField>* instance_fields = proxyClass->GetIFields();
EXPECT_TRUE(instance_fields == nullptr);
mirror::ObjectArray<mirror::ArtField>* static_fields = proxyClass->GetSFields();
ASSERT_TRUE(static_fields != nullptr);
ASSERT_EQ(2, static_fields->GetLength());
mirror::Class* interfacesFieldClass = class_linker_->FindSystemClass(soa.Self(),
"[Ljava/lang/Class;");
ASSERT_TRUE(interfacesFieldClass != nullptr);
mirror::Class* throwsFieldClass = class_linker_->FindSystemClass(soa.Self(),
"[[Ljava/lang/Class;");
ASSERT_TRUE(throwsFieldClass != nullptr);
// Test "Class[] interfaces" field.
FieldHelper fh(static_fields->Get(0));
EXPECT_EQ("interfaces", std::string(fh.GetName()));
EXPECT_EQ("[Ljava/lang/Class;", std::string(fh.GetTypeDescriptor()));
EXPECT_EQ(interfacesFieldClass, fh.GetType());
EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
EXPECT_FALSE(fh.IsPrimitiveType());
// Test "Class[][] throws" field.
fh.ChangeField(static_fields->Get(1));
EXPECT_EQ("throws", std::string(fh.GetName()));
EXPECT_EQ("[[Ljava/lang/Class;", std::string(fh.GetTypeDescriptor()));
EXPECT_EQ(throwsFieldClass, fh.GetType());
EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
EXPECT_FALSE(fh.IsPrimitiveType());
}
} // namespace art
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