content/browser/android/java/gin_java_method_invocation_helper_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/android/java/gin_java_method_invocation_helper.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "content/browser/android/java/jni_helper.h"
   9 #include "content/common/android/gin_java_bridge_value.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace content {
  13
  14 namespace {
  15
  16 class NullObjectDelegate
  17     : public GinJavaMethodInvocationHelper::ObjectDelegate {
  18  public:
  19   NullObjectDelegate() {}
  20
  21   virtual ~NullObjectDelegate() {}
  22
  23   virtual base::android::ScopedJavaLocalRef<jobject> GetLocalRef(
  24       JNIEnv* env) OVERRIDE {
  25     return base::android::ScopedJavaLocalRef<jobject>();
  26   }
  27
  28   virtual base::android::ScopedJavaLocalRef<jclass> GetLocalClassRef(
  29       JNIEnv* env) OVERRIDE {
  30     return base::android::ScopedJavaLocalRef<jclass>();
  31   }
  32
  33   virtual const JavaMethod* FindMethod(const std::string& method_name,
  34                                        size_t num_parameters) OVERRIDE {
  35     return NULL;
  36   }
  37
  38   virtual bool IsObjectGetClassMethod(const JavaMethod* method) OVERRIDE {
  39     return false;
  40   }
  41
  42   virtual const base::android::JavaRef<jclass>& GetSafeAnnotationClass()
  43       OVERRIDE {
  44     return safe_annotation_class_;
  45   }
  46
  47  private:
  48   base::android::ScopedJavaLocalRef<jclass> safe_annotation_class_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(NullObjectDelegate);
  51 };
  52
  53 class NullDispatcherDelegate
  54     : public GinJavaMethodInvocationHelper::DispatcherDelegate {
  55  public:
  56   NullDispatcherDelegate() {}
  57
  58   virtual ~NullDispatcherDelegate() {}
  59
  60   virtual JavaObjectWeakGlobalRef GetObjectWeakRef(
  61       GinJavaBoundObject::ObjectID object_id) OVERRIDE {
  62     return JavaObjectWeakGlobalRef();
  63   }
  64
  65   DISALLOW_COPY_AND_ASSIGN(NullDispatcherDelegate);
  66 };
  67
  68 }  // namespace
  69
  70 class GinJavaMethodInvocationHelperTest : public testing::Test {
  71 };
  72
  73 namespace {
  74
  75 class CountingDispatcherDelegate
  76     : public GinJavaMethodInvocationHelper::DispatcherDelegate {
  77  public:
  78   CountingDispatcherDelegate() {}
  79
  80   virtual ~CountingDispatcherDelegate() {}
  81
  82   virtual JavaObjectWeakGlobalRef GetObjectWeakRef(
  83       GinJavaBoundObject::ObjectID object_id) OVERRIDE {
  84     counters_[object_id]++;
  85     return JavaObjectWeakGlobalRef();
  86   }
  87
  88   void AssertInvocationsCount(GinJavaBoundObject::ObjectID begin_object_id,
  89                               GinJavaBoundObject::ObjectID end_object_id) {
  90     EXPECT_EQ(end_object_id - begin_object_id,
  91               static_cast<int>(counters_.size()));
  92     for (GinJavaBoundObject::ObjectID i = begin_object_id;
  93          i < end_object_id; ++i) {
  94       EXPECT_LT(0, counters_[i]) << "ObjectID: " << i;
  95     }
  96   }
  97
  98  private:
  99   typedef std::map<GinJavaBoundObject::ObjectID, int> Counters;
 100   Counters counters_;
 101
 102   DISALLOW_COPY_AND_ASSIGN(CountingDispatcherDelegate);
 103 };
 104
 105 }  // namespace
 106
 107 TEST_F(GinJavaMethodInvocationHelperTest, RetrievalOfObjectsNoObjects) {
 108   base::ListValue no_objects;
 109   for (int i = 0; i < 10; ++i) {
 110     no_objects.AppendInteger(i);
 111   }
 112
 113   scoped_refptr<GinJavaMethodInvocationHelper> helper =
 114       new GinJavaMethodInvocationHelper(
 115           scoped_ptr<GinJavaMethodInvocationHelper::ObjectDelegate>(
 116               new NullObjectDelegate()),
 117           "foo",
 118           no_objects);
 119   CountingDispatcherDelegate counter;
 120   helper->Init(&counter);
 121   counter.AssertInvocationsCount(0, 0);
 122 }
 123
 124 TEST_F(GinJavaMethodInvocationHelperTest, RetrievalOfObjectsHaveObjects) {
 125   base::ListValue objects;
 126   objects.AppendInteger(100);
 127   objects.Append(GinJavaBridgeValue::CreateObjectIDValue(1).release());
 128   base::ListValue* sub_list = new base::ListValue();
 129   sub_list->AppendInteger(200);
 130   sub_list->Append(GinJavaBridgeValue::CreateObjectIDValue(2).release());
 131   objects.Append(sub_list);
 132   base::DictionaryValue* sub_dict = new base::DictionaryValue();
 133   sub_dict->SetInteger("1", 300);
 134   sub_dict->Set("2", GinJavaBridgeValue::CreateObjectIDValue(3).release());
 135   objects.Append(sub_dict);
 136   base::ListValue* sub_list_with_dict = new base::ListValue();
 137   base::DictionaryValue* sub_sub_dict = new base::DictionaryValue();
 138   sub_sub_dict->Set("1", GinJavaBridgeValue::CreateObjectIDValue(4).release());
 139   sub_list_with_dict->Append(sub_sub_dict);
 140   objects.Append(sub_list_with_dict);
 141   base::DictionaryValue* sub_dict_with_list = new base::DictionaryValue();
 142   base::ListValue* sub_sub_list = new base::ListValue();
 143   sub_sub_list->Append(GinJavaBridgeValue::CreateObjectIDValue(5).release());
 144   sub_dict_with_list->Set("1", sub_sub_list);
 145   objects.Append(sub_dict_with_list);
 146
 147   scoped_refptr<GinJavaMethodInvocationHelper> helper =
 148       new GinJavaMethodInvocationHelper(
 149           scoped_ptr<GinJavaMethodInvocationHelper::ObjectDelegate>(
 150               new NullObjectDelegate()),
 151           "foo",
 152           objects);
 153   CountingDispatcherDelegate counter;
 154   helper->Init(&counter);
 155   counter.AssertInvocationsCount(1, 6);
 156 }
 157
 158 namespace {
 159
 160 class ObjectIsGoneObjectDelegate : public NullObjectDelegate {
 161  public:
 162   ObjectIsGoneObjectDelegate() :
 163       get_local_ref_called_(false) {
 164     // We need a Java Method object to create a valid JavaMethod instance.
 165     JNIEnv* env = base::android::AttachCurrentThread();
 166     jmethodID method_id =
 167         GetMethodIDFromClassName(env, "java/lang/Object", "hashCode", "()I");
 168     EXPECT_TRUE(method_id);
 169     base::android::ScopedJavaLocalRef<jobject> method_obj(
 170         env,
 171         env->ToReflectedMethod(
 172             base::android::GetClass(env, "java/lang/Object").obj(),
 173             method_id,
 174             false));
 175     EXPECT_TRUE(method_obj.obj());
 176     method_.reset(new JavaMethod(method_obj));
 177   }
 178
 179   virtual ~ObjectIsGoneObjectDelegate() {}
 180
 181   virtual base::android::ScopedJavaLocalRef<jobject> GetLocalRef(
 182       JNIEnv* env) OVERRIDE {
 183     get_local_ref_called_ = true;
 184     return NullObjectDelegate::GetLocalRef(env);
 185   }
 186
 187   virtual const JavaMethod* FindMethod(const std::string& method_name,
 188                                        size_t num_parameters) OVERRIDE {
 189     return method_.get();
 190   }
 191
 192   bool get_local_ref_called() { return get_local_ref_called_; }
 193
 194   const std::string& get_method_name() { return method_->name(); }
 195
 196  protected:
 197   scoped_ptr<JavaMethod> method_;
 198   bool get_local_ref_called_;
 199
 200  private:
 201   DISALLOW_COPY_AND_ASSIGN(ObjectIsGoneObjectDelegate);
 202 };
 203
 204 }  // namespace
 205
 206 TEST_F(GinJavaMethodInvocationHelperTest, HandleObjectIsGone) {
 207   base::ListValue no_objects;
 208   ObjectIsGoneObjectDelegate* object_delegate =
 209       new ObjectIsGoneObjectDelegate();
 210   scoped_refptr<GinJavaMethodInvocationHelper> helper =
 211       new GinJavaMethodInvocationHelper(
 212           scoped_ptr<GinJavaMethodInvocationHelper::ObjectDelegate>(
 213               object_delegate),
 214           object_delegate->get_method_name(),
 215           no_objects);
 216   NullDispatcherDelegate dispatcher;
 217   helper->Init(&dispatcher);
 218   EXPECT_FALSE(object_delegate->get_local_ref_called());
 219   EXPECT_EQ(kGinJavaBridgeNoError, helper->GetInvocationError());
 220   helper->Invoke();
 221   EXPECT_TRUE(object_delegate->get_local_ref_called());
 222   EXPECT_TRUE(helper->HoldsPrimitiveResult());
 223   EXPECT_TRUE(helper->GetPrimitiveResult().empty());
 224   EXPECT_EQ(kGinJavaBridgeObjectIsGone, helper->GetInvocationError());
 225 }
 226
 227 namespace {
 228
 229 class MethodNotFoundObjectDelegate : public NullObjectDelegate {
 230  public:
 231   MethodNotFoundObjectDelegate() : find_method_called_(false) {}
 232
 233   virtual ~MethodNotFoundObjectDelegate() {}
 234
 235   virtual base::android::ScopedJavaLocalRef<jobject> GetLocalRef(
 236       JNIEnv* env) OVERRIDE {
 237     return base::android::ScopedJavaLocalRef<jobject>(
 238         env, static_cast<jobject>(env->FindClass("java/lang/String")));
 239   }
 240
 241   virtual const JavaMethod* FindMethod(const std::string& method_name,
 242                                        size_t num_parameters) OVERRIDE {
 243     find_method_called_ = true;
 244     return NULL;
 245   }
 246
 247   bool find_method_called() const { return find_method_called_; }
 248
 249  protected:
 250   bool find_method_called_;
 251
 252  private:
 253   DISALLOW_COPY_AND_ASSIGN(MethodNotFoundObjectDelegate);
 254 };
 255
 256 }  // namespace
 257
 258 TEST_F(GinJavaMethodInvocationHelperTest, HandleMethodNotFound) {
 259   base::ListValue no_objects;
 260   MethodNotFoundObjectDelegate* object_delegate =
 261       new MethodNotFoundObjectDelegate();
 262   scoped_refptr<GinJavaMethodInvocationHelper> helper =
 263       new GinJavaMethodInvocationHelper(
 264           scoped_ptr<GinJavaMethodInvocationHelper::ObjectDelegate>(
 265               object_delegate),
 266           "foo",
 267           no_objects);
 268   NullDispatcherDelegate dispatcher;
 269   helper->Init(&dispatcher);
 270   EXPECT_FALSE(object_delegate->find_method_called());
 271   EXPECT_EQ(kGinJavaBridgeNoError, helper->GetInvocationError());
 272   helper->Invoke();
 273   EXPECT_TRUE(object_delegate->find_method_called());
 274   EXPECT_TRUE(helper->HoldsPrimitiveResult());
 275   EXPECT_TRUE(helper->GetPrimitiveResult().empty());
 276   EXPECT_EQ(kGinJavaBridgeMethodNotFound, helper->GetInvocationError());
 277 }
 278
 279 namespace {
 280
 281 class GetClassObjectDelegate : public MethodNotFoundObjectDelegate {
 282  public:
 283   GetClassObjectDelegate() : get_class_called_(false) {}
 284
 285   virtual ~GetClassObjectDelegate() {}
 286
 287   virtual const JavaMethod* FindMethod(const std::string& method_name,
 288                                        size_t num_parameters) OVERRIDE {
 289     find_method_called_ = true;
 290     return kFakeGetClass;
 291   }
 292
 293   virtual bool IsObjectGetClassMethod(const JavaMethod* method) OVERRIDE {
 294     get_class_called_ = true;
 295     return kFakeGetClass == method;
 296   }
 297
 298   bool get_class_called() const { return get_class_called_; }
 299
 300  private:
 301   static const JavaMethod* kFakeGetClass;
 302   bool get_class_called_;
 303
 304   DISALLOW_COPY_AND_ASSIGN(GetClassObjectDelegate);
 305 };
 306
 307 // We don't expect GinJavaMethodInvocationHelper to actually invoke the
 308 // method, since the point of the test is to verify whether calls to
 309 // 'getClass' get blocked.
 310 const JavaMethod* GetClassObjectDelegate::kFakeGetClass =
 311     (JavaMethod*)0xdeadbeef;
 312
 313 }  // namespace
 314
 315 TEST_F(GinJavaMethodInvocationHelperTest, HandleGetClassInvocation) {
 316   base::ListValue no_objects;
 317   GetClassObjectDelegate* object_delegate =
 318       new GetClassObjectDelegate();
 319   scoped_refptr<GinJavaMethodInvocationHelper> helper =
 320       new GinJavaMethodInvocationHelper(
 321           scoped_ptr<GinJavaMethodInvocationHelper::ObjectDelegate>(
 322               object_delegate),
 323           "foo",
 324           no_objects);
 325   NullDispatcherDelegate dispatcher;
 326   helper->Init(&dispatcher);
 327   EXPECT_FALSE(object_delegate->find_method_called());
 328   EXPECT_FALSE(object_delegate->get_class_called());
 329   EXPECT_EQ(kGinJavaBridgeNoError, helper->GetInvocationError());
 330   helper->Invoke();
 331   EXPECT_TRUE(object_delegate->find_method_called());
 332   EXPECT_TRUE(object_delegate->get_class_called());
 333   EXPECT_TRUE(helper->HoldsPrimitiveResult());
 334   EXPECT_TRUE(helper->GetPrimitiveResult().empty());
 335   EXPECT_EQ(kGinJavaBridgeAccessToObjectGetClassIsBlocked,
 336             helper->GetInvocationError());
 337 }
 338
 339 }  // namespace content