blob: 08abb6fbdb803f2aba856105545da3e137f99f47 [file] [log] [blame]
// Copyright 2011 Google Inc. All Rights Reserved.
#include "object.h"
#include <stdint.h>
#include <stdio.h>
#include "UniquePtr.h"
#include "class_linker.h"
#include "common_test.h"
#include "dex_file.h"
#include "heap.h"
#include "runtime_support.h"
namespace art {
class ObjectTest : public CommonTest {
protected:
void AssertString(int32_t length,
const char* utf8_in,
const char* utf16_expected_le,
int32_t expected_hash) {
uint16_t utf16_expected[length];
for (int32_t i = 0; i < length; i++) {
uint16_t ch = (((utf16_expected_le[i*2 + 0] & 0xff) << 8) |
((utf16_expected_le[i*2 + 1] & 0xff) << 0));
utf16_expected[i] = ch;
}
SirtRef<String> string(String::AllocFromModifiedUtf8(length, utf8_in));
ASSERT_EQ(length, string->GetLength());
ASSERT_TRUE(string->GetCharArray() != NULL);
ASSERT_TRUE(string->GetCharArray()->GetData() != NULL);
// strlen is necessary because the 1-character string "\0" is interpreted as ""
ASSERT_TRUE(string->Equals(utf8_in) || length != static_cast<int32_t>(strlen(utf8_in)));
for (int32_t i = 0; i < length; i++) {
EXPECT_EQ(utf16_expected[i], string->CharAt(i));
}
EXPECT_EQ(expected_hash, string->GetHashCode());
}
};
TEST_F(ObjectTest, IsInSamePackage) {
// Matches
SirtRef<String> Object_descriptor(String::AllocFromModifiedUtf8("Ljava/lang/Object;"));
SirtRef<String> Class_descriptor(String::AllocFromModifiedUtf8("Ljava/lang/Class;"));
EXPECT_TRUE(Class::IsInSamePackage(Object_descriptor.get(), Class_descriptor.get()));
SirtRef<String> Foo_descriptor(String::AllocFromModifiedUtf8("LFoo;"));
SirtRef<String> Bar_descriptor(String::AllocFromModifiedUtf8("LBar;"));
EXPECT_TRUE(Class::IsInSamePackage(Foo_descriptor.get(), Bar_descriptor.get()));
// Mismatches
SirtRef<String> File_descriptor(String::AllocFromModifiedUtf8("Ljava/io/File;"));
EXPECT_FALSE(Class::IsInSamePackage(Object_descriptor.get(), File_descriptor.get()));
SirtRef<String> Method_descriptor(String::AllocFromModifiedUtf8("Ljava/lang/reflect/Method;"));
EXPECT_FALSE(Class::IsInSamePackage(Object_descriptor.get(), Method_descriptor.get()));
}
TEST_F(ObjectTest, Clone) {
SirtRef<ObjectArray<Object> > a1(class_linker_->AllocObjectArray<Object>(256));
size_t s1 = a1->SizeOf();
Object* clone = a1->Clone();
EXPECT_EQ(s1, clone->SizeOf());
EXPECT_TRUE(clone->GetClass() == a1->GetClass());
}
TEST_F(ObjectTest, AllocObjectArray) {
SirtRef<ObjectArray<Object> > oa(class_linker_->AllocObjectArray<Object>(2));
EXPECT_EQ(2, oa->GetLength());
EXPECT_TRUE(oa->Get(0) == NULL);
EXPECT_TRUE(oa->Get(1) == NULL);
oa->Set(0, oa.get());
EXPECT_TRUE(oa->Get(0) == oa.get());
EXPECT_TRUE(oa->Get(1) == NULL);
oa->Set(1, oa.get());
EXPECT_TRUE(oa->Get(0) == oa.get());
EXPECT_TRUE(oa->Get(1) == oa.get());
Thread* self = Thread::Current();
Class* aioobe = class_linker_->FindSystemClass("Ljava/lang/ArrayIndexOutOfBoundsException;");
EXPECT_TRUE(oa->Get(-1) == NULL);
EXPECT_TRUE(self->IsExceptionPending());
EXPECT_EQ(aioobe, self->GetException()->GetClass());
self->ClearException();
EXPECT_TRUE(oa->Get(2) == NULL);
EXPECT_TRUE(self->IsExceptionPending());
EXPECT_EQ(aioobe, self->GetException()->GetClass());
self->ClearException();
ASSERT_TRUE(oa->GetClass() != NULL);
ASSERT_EQ(2U, oa->GetClass()->NumInterfaces());
EXPECT_EQ(class_linker_->FindSystemClass("Ljava/lang/Cloneable;"),
oa->GetClass()->GetInterface(0));
EXPECT_EQ(class_linker_->FindSystemClass("Ljava/io/Serializable;"),
oa->GetClass()->GetInterface(1));
}
TEST_F(ObjectTest, AllocArray) {
Class* c = class_linker_->FindSystemClass("[I");
SirtRef<Array> a(Array::Alloc(c, 1));
ASSERT_TRUE(c == a->GetClass());
c = class_linker_->FindSystemClass("[Ljava/lang/Object;");
a.reset(Array::Alloc(c, 1));
ASSERT_TRUE(c == a->GetClass());
c = class_linker_->FindSystemClass("[[Ljava/lang/Object;");
a.reset(Array::Alloc(c, 1));
ASSERT_TRUE(c == a->GetClass());
}
template<typename ArrayT>
void TestPrimitiveArray(ClassLinker* cl) {
typedef typename ArrayT::ElementType T;
ArrayT* a = ArrayT::Alloc(2);
EXPECT_EQ(2, a->GetLength());
EXPECT_EQ(0, a->Get(0));
EXPECT_EQ(0, a->Get(1));
a->Set(0, T(123));
EXPECT_EQ(T(123), a->Get(0));
EXPECT_EQ(0, a->Get(1));
a->Set(1, T(321));
EXPECT_EQ(T(123), a->Get(0));
EXPECT_EQ(T(321), a->Get(1));
Thread* self = Thread::Current();
Class* aioobe = cl->FindSystemClass("Ljava/lang/ArrayIndexOutOfBoundsException;");
EXPECT_EQ(0, a->Get(-1));
EXPECT_TRUE(self->IsExceptionPending());
EXPECT_EQ(aioobe, self->GetException()->GetClass());
self->ClearException();
EXPECT_EQ(0, a->Get(2));
EXPECT_TRUE(self->IsExceptionPending());
EXPECT_EQ(aioobe, self->GetException()->GetClass());
self->ClearException();
}
TEST_F(ObjectTest, PrimitiveArray_Boolean_Alloc) {
TestPrimitiveArray<BooleanArray>(class_linker_);
}
TEST_F(ObjectTest, PrimitiveArray_Byte_Alloc) {
TestPrimitiveArray<ByteArray>(class_linker_);
}
TEST_F(ObjectTest, PrimitiveArray_Char_Alloc) {
TestPrimitiveArray<CharArray>(class_linker_);
}
TEST_F(ObjectTest, PrimitiveArray_Double_Alloc) {
TestPrimitiveArray<DoubleArray>(class_linker_);
}
TEST_F(ObjectTest, PrimitiveArray_Float_Alloc) {
TestPrimitiveArray<FloatArray>(class_linker_);
}
TEST_F(ObjectTest, PrimitiveArray_Int_Alloc) {
TestPrimitiveArray<IntArray>(class_linker_);
}
TEST_F(ObjectTest, PrimitiveArray_Long_Alloc) {
TestPrimitiveArray<LongArray>(class_linker_);
}
TEST_F(ObjectTest, PrimitiveArray_Short_Alloc) {
TestPrimitiveArray<ShortArray>(class_linker_);
}
TEST_F(ObjectTest, CheckAndAllocArrayFromCode) {
// pretend we are trying to call 'new char[3]' from String.toCharArray
Class* java_util_Arrays = class_linker_->FindSystemClass("Ljava/util/Arrays;");
Method* sort = java_util_Arrays->FindDirectMethod("sort", "([I)V");
const DexFile::StringId* string_id = java_lang_dex_file_->FindStringId("[I");
ASSERT_TRUE(string_id != NULL);
const DexFile::TypeId* type_id = java_lang_dex_file_->FindTypeId(
java_lang_dex_file_->GetIndexForStringId(*string_id));
ASSERT_TRUE(type_id != NULL);
uint32_t type_idx = java_lang_dex_file_->GetIndexForTypeId(*type_id);
Object* array = CheckAndAllocArrayFromCode(type_idx, sort, 3, Thread::Current());
EXPECT_TRUE(array->IsArrayInstance());
EXPECT_EQ(3, array->AsArray()->GetLength());
EXPECT_TRUE(array->GetClass()->IsArrayClass());
EXPECT_TRUE(array->GetClass()->GetComponentType()->IsPrimitive());
}
TEST_F(ObjectTest, StaticFieldFromCode) {
// pretend we are trying to access 'Static.s0' from StaticsFromCode.<clinit>
SirtRef<ClassLoader> class_loader(LoadDex("StaticsFromCode"));
const DexFile* dex_file = ClassLoader::GetCompileTimeClassPath(class_loader.get())[0];
CHECK(dex_file != NULL);
Class* klass = class_linker_->FindClass("LStaticsFromCode;", class_loader.get());
Method* clinit = klass->FindDirectMethod("<clinit>", "()V");
const DexFile::StringId* klass_string_id = dex_file->FindStringId("LStaticsFromCode;");
ASSERT_TRUE(klass_string_id != NULL);
const DexFile::TypeId* klass_type_id = dex_file->FindTypeId(
dex_file->GetIndexForStringId(*klass_string_id));
ASSERT_TRUE(klass_type_id != NULL);
const DexFile::StringId* type_string_id = dex_file->FindStringId("Ljava/lang/Object;");
ASSERT_TRUE(type_string_id != NULL);
const DexFile::TypeId* type_type_id = dex_file->FindTypeId(
dex_file->GetIndexForStringId(*type_string_id));
ASSERT_TRUE(type_type_id != NULL);
const DexFile::StringId* name_str_id = dex_file->FindStringId("s0");
ASSERT_TRUE(name_str_id != NULL);
const DexFile::FieldId* field_id = dex_file->FindFieldId(
*klass_type_id, *name_str_id, *type_type_id);
ASSERT_TRUE(field_id != NULL);
uint32_t field_idx = dex_file->GetIndexForFieldId(*field_id);
Field* field = FindFieldFromCode(field_idx, clinit, true);
Object* s0 = field->GetObj(NULL);
EXPECT_EQ(NULL, s0);
SirtRef<CharArray> char_array(CharArray::Alloc(0));
field->SetObj(NULL, char_array.get());
EXPECT_EQ(char_array.get(), field->GetObj(NULL));
field->SetObj(NULL, NULL);
EXPECT_EQ(NULL, field->GetObj(NULL));
// TODO: more exhaustive tests of all 6 cases of Field::*FromCode
}
TEST_F(ObjectTest, String) {
// Test the empty string.
AssertString(0, "", "", 0);
// Test one-byte characters.
AssertString(1, " ", "\x00\x20", 0x20);
AssertString(1, "", "\x00\x00", 0);
AssertString(1, "\x7f", "\x00\x7f", 0x7f);
AssertString(2, "hi", "\x00\x68\x00\x69", (31 * 0x68) + 0x69);
// Test two-byte characters.
AssertString(1, "\xc2\x80", "\x00\x80", 0x80);
AssertString(1, "\xd9\xa6", "\x06\x66", 0x0666);
AssertString(1, "\xdf\xbf", "\x07\xff", 0x07ff);
AssertString(3, "h\xd9\xa6i", "\x00\x68\x06\x66\x00\x69", (31 * ((31 * 0x68) + 0x0666)) + 0x69);
// Test three-byte characters.
AssertString(1, "\xe0\xa0\x80", "\x08\x00", 0x0800);
AssertString(1, "\xe1\x88\xb4", "\x12\x34", 0x1234);
AssertString(1, "\xef\xbf\xbf", "\xff\xff", 0xffff);
AssertString(3, "h\xe1\x88\xb4i", "\x00\x68\x12\x34\x00\x69", (31 * ((31 * 0x68) + 0x1234)) + 0x69);
}
TEST_F(ObjectTest, StringEqualsUtf8) {
SirtRef<String> string(String::AllocFromModifiedUtf8("android"));
EXPECT_TRUE(string->Equals("android"));
EXPECT_FALSE(string->Equals("Android"));
EXPECT_FALSE(string->Equals("ANDROID"));
EXPECT_FALSE(string->Equals(""));
EXPECT_FALSE(string->Equals("and"));
EXPECT_FALSE(string->Equals("androids"));
SirtRef<String> empty(String::AllocFromModifiedUtf8(""));
EXPECT_TRUE(empty->Equals(""));
EXPECT_FALSE(empty->Equals("a"));
}
TEST_F(ObjectTest, StringEquals) {
SirtRef<String> string(String::AllocFromModifiedUtf8("android"));
SirtRef<String> string_2(String::AllocFromModifiedUtf8("android"));
EXPECT_TRUE(string->Equals(string_2.get()));
EXPECT_FALSE(string->Equals("Android"));
EXPECT_FALSE(string->Equals("ANDROID"));
EXPECT_FALSE(string->Equals(""));
EXPECT_FALSE(string->Equals("and"));
EXPECT_FALSE(string->Equals("androids"));
SirtRef<String> empty(String::AllocFromModifiedUtf8(""));
EXPECT_TRUE(empty->Equals(""));
EXPECT_FALSE(empty->Equals("a"));
}
TEST_F(ObjectTest, DescriptorCompare) {
ClassLinker* linker = class_linker_;
SirtRef<ClassLoader> class_loader_1(LoadDex("ProtoCompare"));
SirtRef<ClassLoader> class_loader_2(LoadDex("ProtoCompare2"));
Class* klass1 = linker->FindClass("LProtoCompare;", class_loader_1.get());
ASSERT_TRUE(klass1 != NULL);
Class* klass2 = linker->FindClass("LProtoCompare2;", class_loader_2.get());
ASSERT_TRUE(klass2 != NULL);
Method* m1_1 = klass1->GetVirtualMethod(0);
EXPECT_TRUE(m1_1->GetName()->Equals("m1"));
Method* m2_1 = klass1->GetVirtualMethod(1);
EXPECT_TRUE(m2_1->GetName()->Equals("m2"));
Method* m3_1 = klass1->GetVirtualMethod(2);
EXPECT_TRUE(m3_1->GetName()->Equals("m3"));
Method* m4_1 = klass1->GetVirtualMethod(3);
EXPECT_TRUE(m4_1->GetName()->Equals("m4"));
Method* m1_2 = klass2->GetVirtualMethod(0);
EXPECT_TRUE(m1_2->GetName()->Equals("m1"));
Method* m2_2 = klass2->GetVirtualMethod(1);
EXPECT_TRUE(m2_2->GetName()->Equals("m2"));
Method* m3_2 = klass2->GetVirtualMethod(2);
EXPECT_TRUE(m3_2->GetName()->Equals("m3"));
Method* m4_2 = klass2->GetVirtualMethod(3);
EXPECT_TRUE(m4_2->GetName()->Equals("m4"));
EXPECT_TRUE(m1_1->HasSameNameAndSignature(m1_2));
EXPECT_TRUE(m1_2->HasSameNameAndSignature(m1_1));
EXPECT_TRUE(m2_1->HasSameNameAndSignature(m2_2));
EXPECT_TRUE(m2_2->HasSameNameAndSignature(m2_1));
EXPECT_TRUE(m3_1->HasSameNameAndSignature(m3_2));
EXPECT_TRUE(m3_2->HasSameNameAndSignature(m3_1));
EXPECT_TRUE(m4_1->HasSameNameAndSignature(m4_2));
EXPECT_TRUE(m4_2->HasSameNameAndSignature(m4_1));
}
TEST_F(ObjectTest, StringHashCode) {
SirtRef<String> empty(String::AllocFromModifiedUtf8(""));
SirtRef<String> A(String::AllocFromModifiedUtf8("A"));
SirtRef<String> ABC(String::AllocFromModifiedUtf8("ABC"));
EXPECT_EQ(0, empty->GetHashCode());
EXPECT_EQ(65, A->GetHashCode());
EXPECT_EQ(64578, ABC->GetHashCode());
}
TEST_F(ObjectTest, InstanceOf) {
SirtRef<ClassLoader> class_loader(LoadDex("XandY"));
Class* X = class_linker_->FindClass("LX;", class_loader.get());
Class* Y = class_linker_->FindClass("LY;", class_loader.get());
ASSERT_TRUE(X != NULL);
ASSERT_TRUE(Y != NULL);
SirtRef<Object> x(X->AllocObject());
SirtRef<Object> y(Y->AllocObject());
ASSERT_TRUE(x.get() != NULL);
ASSERT_TRUE(y.get() != NULL);
EXPECT_EQ(1U, IsAssignableFromCode(X, x->GetClass()));
EXPECT_EQ(0U, IsAssignableFromCode(Y, x->GetClass()));
EXPECT_EQ(1U, IsAssignableFromCode(X, y->GetClass()));
EXPECT_EQ(1U, IsAssignableFromCode(Y, y->GetClass()));
EXPECT_TRUE(x->InstanceOf(X));
EXPECT_FALSE(x->InstanceOf(Y));
EXPECT_TRUE(y->InstanceOf(X));
EXPECT_TRUE(y->InstanceOf(Y));
Class* java_lang_Class = class_linker_->FindSystemClass("Ljava/lang/Class;");
Class* Object_array_class = class_linker_->FindSystemClass("[Ljava/lang/Object;");
EXPECT_FALSE(java_lang_Class->InstanceOf(Object_array_class));
EXPECT_TRUE(Object_array_class->InstanceOf(java_lang_Class));
// All array classes implement Cloneable and Serializable.
Object* array = ObjectArray<Object>::Alloc(Object_array_class, 1);
Class* java_lang_Cloneable = class_linker_->FindSystemClass("Ljava/lang/Cloneable;");
Class* java_io_Serializable = class_linker_->FindSystemClass("Ljava/io/Serializable;");
EXPECT_TRUE(array->InstanceOf(java_lang_Cloneable));
EXPECT_TRUE(array->InstanceOf(java_io_Serializable));
}
TEST_F(ObjectTest, IsAssignableFrom) {
SirtRef<ClassLoader> class_loader(LoadDex("XandY"));
Class* X = class_linker_->FindClass("LX;", class_loader.get());
Class* Y = class_linker_->FindClass("LY;", class_loader.get());
EXPECT_TRUE(X->IsAssignableFrom(X));
EXPECT_TRUE(X->IsAssignableFrom(Y));
EXPECT_FALSE(Y->IsAssignableFrom(X));
EXPECT_TRUE(Y->IsAssignableFrom(Y));
// class final String implements CharSequence, ..
Class* string = class_linker_->FindSystemClass("Ljava/lang/String;");
Class* charseq = class_linker_->FindSystemClass("Ljava/lang/CharSequence;");
// Can String be assigned to CharSequence without a cast?
EXPECT_TRUE(charseq->IsAssignableFrom(string));
// Can CharSequence be assigned to String without a cast?
EXPECT_FALSE(string->IsAssignableFrom(charseq));
// Primitive types are only assignable to themselves
const char* prims = "ZBCSIJFD";
Class* prim_types[strlen(prims)];
for (size_t i = 0; i < strlen(prims); i++) {
prim_types[i] = class_linker_->FindPrimitiveClass(prims[i]);
}
for (size_t i = 0; i < strlen(prims); i++) {
for (size_t j = 0; i < strlen(prims); i++) {
if (i == j) {
EXPECT_TRUE(prim_types[i]->IsAssignableFrom(prim_types[j]));
} else {
EXPECT_FALSE(prim_types[i]->IsAssignableFrom(prim_types[j]));
}
}
}
}
TEST_F(ObjectTest, IsAssignableFromArray) {
SirtRef<ClassLoader> class_loader(LoadDex("XandY"));
Class* X = class_linker_->FindClass("LX;", class_loader.get());
Class* Y = class_linker_->FindClass("LY;", class_loader.get());
ASSERT_TRUE(X != NULL);
ASSERT_TRUE(Y != NULL);
Class* YA = class_linker_->FindClass("[LY;", class_loader.get());
Class* YAA = class_linker_->FindClass("[[LY;", class_loader.get());
ASSERT_TRUE(YA != NULL);
ASSERT_TRUE(YAA != NULL);
Class* XAA = class_linker_->FindClass("[[LX;", class_loader.get());
ASSERT_TRUE(XAA != NULL);
Class* O = class_linker_->FindSystemClass("Ljava/lang/Object;");
Class* OA = class_linker_->FindSystemClass("[Ljava/lang/Object;");
Class* OAA = class_linker_->FindSystemClass("[[Ljava/lang/Object;");
Class* OAAA = class_linker_->FindSystemClass("[[[Ljava/lang/Object;");
ASSERT_TRUE(O != NULL);
ASSERT_TRUE(OA != NULL);
ASSERT_TRUE(OAA != NULL);
ASSERT_TRUE(OAAA != NULL);
Class* S = class_linker_->FindSystemClass("Ljava/io/Serializable;");
Class* SA = class_linker_->FindSystemClass("[Ljava/io/Serializable;");
Class* SAA = class_linker_->FindSystemClass("[[Ljava/io/Serializable;");
ASSERT_TRUE(S != NULL);
ASSERT_TRUE(SA != NULL);
ASSERT_TRUE(SAA != NULL);
Class* IA = class_linker_->FindSystemClass("[I");
ASSERT_TRUE(IA != NULL);
EXPECT_TRUE(YAA->IsAssignableFrom(YAA)); // identity
EXPECT_TRUE(XAA->IsAssignableFrom(YAA)); // element superclass
EXPECT_FALSE(YAA->IsAssignableFrom(XAA));
EXPECT_FALSE(Y->IsAssignableFrom(YAA));
EXPECT_FALSE(YA->IsAssignableFrom(YAA));
EXPECT_TRUE(O->IsAssignableFrom(YAA)); // everything is an Object
EXPECT_TRUE(OA->IsAssignableFrom(YAA));
EXPECT_TRUE(OAA->IsAssignableFrom(YAA));
EXPECT_TRUE(S->IsAssignableFrom(YAA)); // all arrays are Serializable
EXPECT_TRUE(SA->IsAssignableFrom(YAA));
EXPECT_FALSE(SAA->IsAssignableFrom(YAA)); // unless Y was Serializable
EXPECT_FALSE(IA->IsAssignableFrom(OA));
EXPECT_FALSE(OA->IsAssignableFrom(IA));
EXPECT_TRUE(O->IsAssignableFrom(IA));
}
TEST_F(ObjectTest, FindInstanceField) {
SirtRef<String> s(String::AllocFromModifiedUtf8("ABC"));
ASSERT_TRUE(s.get() != NULL);
Class* c = s->GetClass();
ASSERT_TRUE(c != NULL);
// Wrong type.
EXPECT_TRUE(c->FindDeclaredInstanceField("count", "J") == NULL);
EXPECT_TRUE(c->FindInstanceField("count", "J") == NULL);
// Wrong name.
EXPECT_TRUE(c->FindDeclaredInstanceField("Count", "I") == NULL);
EXPECT_TRUE(c->FindInstanceField("Count", "I") == NULL);
// Right name and type.
Field* f1 = c->FindDeclaredInstanceField("count", "I");
Field* f2 = c->FindInstanceField("count", "I");
EXPECT_TRUE(f1 != NULL);
EXPECT_TRUE(f2 != NULL);
EXPECT_EQ(f1, f2);
// TODO: check that s.count == 3.
// Ensure that we handle superclass fields correctly...
c = class_linker_->FindSystemClass("Ljava/lang/StringBuilder;");
ASSERT_TRUE(c != NULL);
// No StringBuilder.count...
EXPECT_TRUE(c->FindDeclaredInstanceField("count", "I") == NULL);
// ...but there is an AbstractStringBuilder.count.
EXPECT_TRUE(c->FindInstanceField("count", "I") != NULL);
}
TEST_F(ObjectTest, FindStaticField) {
SirtRef<String> s(String::AllocFromModifiedUtf8("ABC"));
ASSERT_TRUE(s.get() != NULL);
Class* c = s->GetClass();
ASSERT_TRUE(c != NULL);
// Wrong type.
EXPECT_TRUE(c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "I") == NULL);
EXPECT_TRUE(c->FindStaticField("CASE_INSENSITIVE_ORDER", "I") == NULL);
// Wrong name.
EXPECT_TRUE(c->FindDeclaredStaticField("cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == NULL);
EXPECT_TRUE(c->FindStaticField("cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == NULL);
// Right name and type.
Field* f1 = c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
Field* f2 = c->FindStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
EXPECT_TRUE(f1 != NULL);
EXPECT_TRUE(f2 != NULL);
EXPECT_EQ(f1, f2);
// TODO: test static fields via superclasses.
// TODO: test static fields via interfaces.
// TODO: test that interfaces trump superclasses.
}
} // namespace art