base/values_unittest.cc

   1 // Copyright (c) 2012 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 <limits>
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/string16.h"
   9 #include "base/utf_string_conversions.h"
  10 #include "base/values.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 namespace base {
  14
  15 TEST(ValuesTest, Basic) {
  16   // Test basic dictionary getting/setting
  17   DictionaryValue settings;
  18   std::string homepage = "http://google.com";
  19   ASSERT_FALSE(settings.GetString("global.homepage", &homepage));
  20   ASSERT_EQ(std::string("http://google.com"), homepage);
  21
  22   ASSERT_FALSE(settings.Get("global", NULL));
  23   settings.Set("global", new FundamentalValue(true));
  24   ASSERT_TRUE(settings.Get("global", NULL));
  25   settings.SetString("global.homepage", "http://scurvy.com");
  26   ASSERT_TRUE(settings.Get("global", NULL));
  27   homepage = "http://google.com";
  28   ASSERT_TRUE(settings.GetString("global.homepage", &homepage));
  29   ASSERT_EQ(std::string("http://scurvy.com"), homepage);
  30
  31   // Test storing a dictionary in a list.
  32   ListValue* toolbar_bookmarks;
  33   ASSERT_FALSE(
  34     settings.GetList("global.toolbar.bookmarks", &toolbar_bookmarks));
  35
  36   toolbar_bookmarks = new ListValue;
  37   settings.Set("global.toolbar.bookmarks", toolbar_bookmarks);
  38   ASSERT_TRUE(settings.GetList("global.toolbar.bookmarks", &toolbar_bookmarks));
  39
  40   DictionaryValue* new_bookmark = new DictionaryValue;
  41   new_bookmark->SetString("name", "Froogle");
  42   new_bookmark->SetString("url", "http://froogle.com");
  43   toolbar_bookmarks->Append(new_bookmark);
  44
  45   ListValue* bookmark_list;
  46   ASSERT_TRUE(settings.GetList("global.toolbar.bookmarks", &bookmark_list));
  47   DictionaryValue* bookmark;
  48   ASSERT_EQ(1U, bookmark_list->GetSize());
  49   ASSERT_TRUE(bookmark_list->GetDictionary(0, &bookmark));
  50   std::string bookmark_name = "Unnamed";
  51   ASSERT_TRUE(bookmark->GetString("name", &bookmark_name));
  52   ASSERT_EQ(std::string("Froogle"), bookmark_name);
  53   std::string bookmark_url;
  54   ASSERT_TRUE(bookmark->GetString("url", &bookmark_url));
  55   ASSERT_EQ(std::string("http://froogle.com"), bookmark_url);
  56 }
  57
  58 TEST(ValuesTest, List) {
  59   scoped_ptr<ListValue> mixed_list(new ListValue());
  60   mixed_list->Set(0, new FundamentalValue(true));
  61   mixed_list->Set(1, new FundamentalValue(42));
  62   mixed_list->Set(2, new FundamentalValue(88.8));
  63   mixed_list->Set(3, new StringValue("foo"));
  64   ASSERT_EQ(4u, mixed_list->GetSize());
  65
  66   Value *value = NULL;
  67   bool bool_value = false;
  68   int int_value = 0;
  69   double double_value = 0.0;
  70   std::string string_value;
  71
  72   ASSERT_FALSE(mixed_list->Get(4, &value));
  73
  74   ASSERT_FALSE(mixed_list->GetInteger(0, &int_value));
  75   ASSERT_EQ(0, int_value);
  76   ASSERT_FALSE(mixed_list->GetBoolean(1, &bool_value));
  77   ASSERT_FALSE(bool_value);
  78   ASSERT_FALSE(mixed_list->GetString(2, &string_value));
  79   ASSERT_EQ("", string_value);
  80   ASSERT_FALSE(mixed_list->GetInteger(2, &int_value));
  81   ASSERT_EQ(0, int_value);
  82   ASSERT_FALSE(mixed_list->GetBoolean(3, &bool_value));
  83   ASSERT_FALSE(bool_value);
  84
  85   ASSERT_TRUE(mixed_list->GetBoolean(0, &bool_value));
  86   ASSERT_TRUE(bool_value);
  87   ASSERT_TRUE(mixed_list->GetInteger(1, &int_value));
  88   ASSERT_EQ(42, int_value);
  89   // implicit conversion from Integer to Double should be possible.
  90   ASSERT_TRUE(mixed_list->GetDouble(1, &double_value));
  91   ASSERT_EQ(42, double_value);
  92   ASSERT_TRUE(mixed_list->GetDouble(2, &double_value));
  93   ASSERT_EQ(88.8, double_value);
  94   ASSERT_TRUE(mixed_list->GetString(3, &string_value));
  95   ASSERT_EQ("foo", string_value);
  96
  97   // Try searching in the mixed list.
  98   base::FundamentalValue sought_value(42);
  99   base::FundamentalValue not_found_value(false);
 100
 101   ASSERT_NE(mixed_list->end(), mixed_list->Find(sought_value));
 102   ASSERT_TRUE((*mixed_list->Find(sought_value))->GetAsInteger(&int_value));
 103   ASSERT_EQ(42, int_value);
 104   ASSERT_EQ(mixed_list->end(), mixed_list->Find(not_found_value));
 105 }
 106
 107 TEST(ValuesTest, BinaryValue) {
 108   char* buffer = NULL;
 109   // Passing a null buffer pointer doesn't yield a BinaryValue
 110   scoped_ptr<BinaryValue> binary(BinaryValue::Create(buffer, 0));
 111   ASSERT_FALSE(binary.get());
 112
 113   // If you want to represent an empty binary value, use a zero-length buffer.
 114   buffer = new char[1];
 115   ASSERT_TRUE(buffer);
 116   binary.reset(BinaryValue::Create(buffer, 0));
 117   ASSERT_TRUE(binary.get());
 118   ASSERT_TRUE(binary->GetBuffer());
 119   ASSERT_EQ(buffer, binary->GetBuffer());
 120   ASSERT_EQ(0U, binary->GetSize());
 121
 122   // Test the common case of a non-empty buffer
 123   buffer = new char[15];
 124   binary.reset(BinaryValue::Create(buffer, 15));
 125   ASSERT_TRUE(binary.get());
 126   ASSERT_TRUE(binary->GetBuffer());
 127   ASSERT_EQ(buffer, binary->GetBuffer());
 128   ASSERT_EQ(15U, binary->GetSize());
 129
 130   char stack_buffer[42];
 131   memset(stack_buffer, '!', 42);
 132   binary.reset(BinaryValue::CreateWithCopiedBuffer(stack_buffer, 42));
 133   ASSERT_TRUE(binary.get());
 134   ASSERT_TRUE(binary->GetBuffer());
 135   ASSERT_NE(stack_buffer, binary->GetBuffer());
 136   ASSERT_EQ(42U, binary->GetSize());
 137   ASSERT_EQ(0, memcmp(stack_buffer, binary->GetBuffer(), binary->GetSize()));
 138 }
 139
 140 TEST(ValuesTest, StringValue) {
 141   // Test overloaded CreateStringValue.
 142   scoped_ptr<Value> narrow_value(new StringValue("narrow"));
 143   ASSERT_TRUE(narrow_value.get());
 144   ASSERT_TRUE(narrow_value->IsType(Value::TYPE_STRING));
 145   scoped_ptr<Value> utf16_value(new StringValue(ASCIIToUTF16("utf16")));
 146   ASSERT_TRUE(utf16_value.get());
 147   ASSERT_TRUE(utf16_value->IsType(Value::TYPE_STRING));
 148
 149   // Test overloaded GetString.
 150   std::string narrow = "http://google.com";
 151   string16 utf16 = ASCIIToUTF16("http://google.com");
 152   ASSERT_TRUE(narrow_value->GetAsString(&narrow));
 153   ASSERT_TRUE(narrow_value->GetAsString(&utf16));
 154   ASSERT_EQ(std::string("narrow"), narrow);
 155   ASSERT_EQ(ASCIIToUTF16("narrow"), utf16);
 156
 157   ASSERT_TRUE(utf16_value->GetAsString(&narrow));
 158   ASSERT_TRUE(utf16_value->GetAsString(&utf16));
 159   ASSERT_EQ(std::string("utf16"), narrow);
 160   ASSERT_EQ(ASCIIToUTF16("utf16"), utf16);
 161 }
 162
 163 // This is a Value object that allows us to tell if it's been
 164 // properly deleted by modifying the value of external flag on destruction.
 165 class DeletionTestValue : public Value {
 166  public:
 167   explicit DeletionTestValue(bool* deletion_flag) : Value(TYPE_NULL) {
 168     Init(deletion_flag);  // Separate function so that we can use ASSERT_*
 169   }
 170
 171   void Init(bool* deletion_flag) {
 172     ASSERT_TRUE(deletion_flag);
 173     deletion_flag_ = deletion_flag;
 174     *deletion_flag_ = false;
 175   }
 176
 177   virtual ~DeletionTestValue() {
 178     *deletion_flag_ = true;
 179   }
 180
 181  private:
 182   bool* deletion_flag_;
 183 };
 184
 185 TEST(ValuesTest, ListDeletion) {
 186   bool deletion_flag = true;
 187
 188   {
 189     ListValue list;
 190     list.Append(new DeletionTestValue(&deletion_flag));
 191     EXPECT_FALSE(deletion_flag);
 192   }
 193   EXPECT_TRUE(deletion_flag);
 194
 195   {
 196     ListValue list;
 197     list.Append(new DeletionTestValue(&deletion_flag));
 198     EXPECT_FALSE(deletion_flag);
 199     list.Clear();
 200     EXPECT_TRUE(deletion_flag);
 201   }
 202
 203   {
 204     ListValue list;
 205     list.Append(new DeletionTestValue(&deletion_flag));
 206     EXPECT_FALSE(deletion_flag);
 207     EXPECT_TRUE(list.Set(0, Value::CreateNullValue()));
 208     EXPECT_TRUE(deletion_flag);
 209   }
 210 }
 211
 212 TEST(ValuesTest, ListRemoval) {
 213   bool deletion_flag = true;
 214   Value* removed_item = NULL;
 215
 216   {
 217     ListValue list;
 218     list.Append(new DeletionTestValue(&deletion_flag));
 219     EXPECT_FALSE(deletion_flag);
 220     EXPECT_EQ(1U, list.GetSize());
 221     EXPECT_FALSE(list.Remove(std::numeric_limits<size_t>::max(),
 222                              &removed_item));
 223     EXPECT_FALSE(list.Remove(1, &removed_item));
 224     EXPECT_TRUE(list.Remove(0, &removed_item));
 225     ASSERT_TRUE(removed_item);
 226     EXPECT_EQ(0U, list.GetSize());
 227   }
 228   EXPECT_FALSE(deletion_flag);
 229   delete removed_item;
 230   removed_item = NULL;
 231   EXPECT_TRUE(deletion_flag);
 232
 233   {
 234     ListValue list;
 235     list.Append(new DeletionTestValue(&deletion_flag));
 236     EXPECT_FALSE(deletion_flag);
 237     EXPECT_TRUE(list.Remove(0, NULL));
 238     EXPECT_TRUE(deletion_flag);
 239     EXPECT_EQ(0U, list.GetSize());
 240   }
 241
 242   {
 243     ListValue list;
 244     DeletionTestValue* value = new DeletionTestValue(&deletion_flag);
 245     list.Append(value);
 246     EXPECT_FALSE(deletion_flag);
 247     size_t index = 0;
 248     list.Remove(*value, &index);
 249     EXPECT_EQ(0U, index);
 250     EXPECT_TRUE(deletion_flag);
 251     EXPECT_EQ(0U, list.GetSize());
 252   }
 253 }
 254
 255 TEST(ValuesTest, DictionaryDeletion) {
 256   std::string key = "test";
 257   bool deletion_flag = true;
 258
 259   {
 260     DictionaryValue dict;
 261     dict.Set(key, new DeletionTestValue(&deletion_flag));
 262     EXPECT_FALSE(deletion_flag);
 263   }
 264   EXPECT_TRUE(deletion_flag);
 265
 266   {
 267     DictionaryValue dict;
 268     dict.Set(key, new DeletionTestValue(&deletion_flag));
 269     EXPECT_FALSE(deletion_flag);
 270     dict.Clear();
 271     EXPECT_TRUE(deletion_flag);
 272   }
 273
 274   {
 275     DictionaryValue dict;
 276     dict.Set(key, new DeletionTestValue(&deletion_flag));
 277     EXPECT_FALSE(deletion_flag);
 278     dict.Set(key, Value::CreateNullValue());
 279     EXPECT_TRUE(deletion_flag);
 280   }
 281 }
 282
 283 TEST(ValuesTest, DictionaryRemoval) {
 284   std::string key = "test";
 285   bool deletion_flag = true;
 286   Value* removed_item = NULL;
 287
 288   {
 289     DictionaryValue dict;
 290     dict.Set(key, new DeletionTestValue(&deletion_flag));
 291     EXPECT_FALSE(deletion_flag);
 292     EXPECT_TRUE(dict.HasKey(key));
 293     EXPECT_FALSE(dict.Remove("absent key", &removed_item));
 294     EXPECT_TRUE(dict.Remove(key, &removed_item));
 295     EXPECT_FALSE(dict.HasKey(key));
 296     ASSERT_TRUE(removed_item);
 297   }
 298   EXPECT_FALSE(deletion_flag);
 299   delete removed_item;
 300   removed_item = NULL;
 301   EXPECT_TRUE(deletion_flag);
 302
 303   {
 304     DictionaryValue dict;
 305     dict.Set(key, new DeletionTestValue(&deletion_flag));
 306     EXPECT_FALSE(deletion_flag);
 307     EXPECT_TRUE(dict.HasKey(key));
 308     EXPECT_TRUE(dict.Remove(key, NULL));
 309     EXPECT_TRUE(deletion_flag);
 310     EXPECT_FALSE(dict.HasKey(key));
 311   }
 312 }
 313
 314 TEST(ValuesTest, DictionaryWithoutPathExpansion) {
 315   DictionaryValue dict;
 316   dict.Set("this.is.expanded", Value::CreateNullValue());
 317   dict.SetWithoutPathExpansion("this.isnt.expanded", Value::CreateNullValue());
 318
 319   EXPECT_FALSE(dict.HasKey("this.is.expanded"));
 320   EXPECT_TRUE(dict.HasKey("this"));
 321   Value* value1;
 322   EXPECT_TRUE(dict.Get("this", &value1));
 323   DictionaryValue* value2;
 324   ASSERT_TRUE(dict.GetDictionaryWithoutPathExpansion("this", &value2));
 325   EXPECT_EQ(value1, value2);
 326   EXPECT_EQ(1U, value2->size());
 327
 328   EXPECT_TRUE(dict.HasKey("this.isnt.expanded"));
 329   Value* value3;
 330   EXPECT_FALSE(dict.Get("this.isnt.expanded", &value3));
 331   Value* value4;
 332   ASSERT_TRUE(dict.GetWithoutPathExpansion("this.isnt.expanded", &value4));
 333   EXPECT_EQ(Value::TYPE_NULL, value4->GetType());
 334 }
 335
 336 TEST(ValuesTest, DeepCopy) {
 337   DictionaryValue original_dict;
 338   Value* original_null = Value::CreateNullValue();
 339   original_dict.Set("null", original_null);
 340   FundamentalValue* original_bool = new FundamentalValue(true);
 341   original_dict.Set("bool", original_bool);
 342   FundamentalValue* original_int = new FundamentalValue(42);
 343   original_dict.Set("int", original_int);
 344   FundamentalValue* original_double = new FundamentalValue(3.14);
 345   original_dict.Set("double", original_double);
 346   StringValue* original_string = new StringValue("hello");
 347   original_dict.Set("string", original_string);
 348   StringValue* original_string16 = new StringValue(ASCIIToUTF16("hello16"));
 349   original_dict.Set("string16", original_string16);
 350
 351   char* original_buffer = new char[42];
 352   memset(original_buffer, '!', 42);
 353   BinaryValue* original_binary = BinaryValue::Create(original_buffer, 42);
 354   original_dict.Set("binary", original_binary);
 355
 356   ListValue* original_list = new ListValue();
 357   FundamentalValue* original_list_element_0 = new FundamentalValue(0);
 358   original_list->Append(original_list_element_0);
 359   FundamentalValue* original_list_element_1 = new FundamentalValue(1);
 360   original_list->Append(original_list_element_1);
 361   original_dict.Set("list", original_list);
 362
 363   DictionaryValue* original_nested_dictionary = new DictionaryValue();
 364   original_nested_dictionary->Set("key", new StringValue("value"));
 365   original_dict.Set("dictionary", original_nested_dictionary);
 366
 367   scoped_ptr<DictionaryValue> copy_dict(original_dict.DeepCopy());
 368   ASSERT_TRUE(copy_dict.get());
 369   ASSERT_NE(copy_dict.get(), &original_dict);
 370
 371   Value* copy_null = NULL;
 372   ASSERT_TRUE(copy_dict->Get("null", &copy_null));
 373   ASSERT_TRUE(copy_null);
 374   ASSERT_NE(copy_null, original_null);
 375   ASSERT_TRUE(copy_null->IsType(Value::TYPE_NULL));
 376
 377   Value* copy_bool = NULL;
 378   ASSERT_TRUE(copy_dict->Get("bool", &copy_bool));
 379   ASSERT_TRUE(copy_bool);
 380   ASSERT_NE(copy_bool, original_bool);
 381   ASSERT_TRUE(copy_bool->IsType(Value::TYPE_BOOLEAN));
 382   bool copy_bool_value = false;
 383   ASSERT_TRUE(copy_bool->GetAsBoolean(&copy_bool_value));
 384   ASSERT_TRUE(copy_bool_value);
 385
 386   Value* copy_int = NULL;
 387   ASSERT_TRUE(copy_dict->Get("int", &copy_int));
 388   ASSERT_TRUE(copy_int);
 389   ASSERT_NE(copy_int, original_int);
 390   ASSERT_TRUE(copy_int->IsType(Value::TYPE_INTEGER));
 391   int copy_int_value = 0;
 392   ASSERT_TRUE(copy_int->GetAsInteger(&copy_int_value));
 393   ASSERT_EQ(42, copy_int_value);
 394
 395   Value* copy_double = NULL;
 396   ASSERT_TRUE(copy_dict->Get("double", &copy_double));
 397   ASSERT_TRUE(copy_double);
 398   ASSERT_NE(copy_double, original_double);
 399   ASSERT_TRUE(copy_double->IsType(Value::TYPE_DOUBLE));
 400   double copy_double_value = 0;
 401   ASSERT_TRUE(copy_double->GetAsDouble(&copy_double_value));
 402   ASSERT_EQ(3.14, copy_double_value);
 403
 404   Value* copy_string = NULL;
 405   ASSERT_TRUE(copy_dict->Get("string", &copy_string));
 406   ASSERT_TRUE(copy_string);
 407   ASSERT_NE(copy_string, original_string);
 408   ASSERT_TRUE(copy_string->IsType(Value::TYPE_STRING));
 409   std::string copy_string_value;
 410   string16 copy_string16_value;
 411   ASSERT_TRUE(copy_string->GetAsString(&copy_string_value));
 412   ASSERT_TRUE(copy_string->GetAsString(&copy_string16_value));
 413   ASSERT_EQ(std::string("hello"), copy_string_value);
 414   ASSERT_EQ(ASCIIToUTF16("hello"), copy_string16_value);
 415
 416   Value* copy_string16 = NULL;
 417   ASSERT_TRUE(copy_dict->Get("string16", &copy_string16));
 418   ASSERT_TRUE(copy_string16);
 419   ASSERT_NE(copy_string16, original_string16);
 420   ASSERT_TRUE(copy_string16->IsType(Value::TYPE_STRING));
 421   ASSERT_TRUE(copy_string16->GetAsString(&copy_string_value));
 422   ASSERT_TRUE(copy_string16->GetAsString(&copy_string16_value));
 423   ASSERT_EQ(std::string("hello16"), copy_string_value);
 424   ASSERT_EQ(ASCIIToUTF16("hello16"), copy_string16_value);
 425
 426   Value* copy_binary = NULL;
 427   ASSERT_TRUE(copy_dict->Get("binary", &copy_binary));
 428   ASSERT_TRUE(copy_binary);
 429   ASSERT_NE(copy_binary, original_binary);
 430   ASSERT_TRUE(copy_binary->IsType(Value::TYPE_BINARY));
 431   ASSERT_NE(original_binary->GetBuffer(),
 432     static_cast<BinaryValue*>(copy_binary)->GetBuffer());
 433   ASSERT_EQ(original_binary->GetSize(),
 434     static_cast<BinaryValue*>(copy_binary)->GetSize());
 435   ASSERT_EQ(0, memcmp(original_binary->GetBuffer(),
 436                static_cast<BinaryValue*>(copy_binary)->GetBuffer(),
 437                original_binary->GetSize()));
 438
 439   Value* copy_value = NULL;
 440   ASSERT_TRUE(copy_dict->Get("list", &copy_value));
 441   ASSERT_TRUE(copy_value);
 442   ASSERT_NE(copy_value, original_list);
 443   ASSERT_TRUE(copy_value->IsType(Value::TYPE_LIST));
 444   ListValue* copy_list = NULL;
 445   ASSERT_TRUE(copy_value->GetAsList(&copy_list));
 446   ASSERT_TRUE(copy_list);
 447   ASSERT_EQ(2U, copy_list->GetSize());
 448
 449   Value* copy_list_element_0;
 450   ASSERT_TRUE(copy_list->Get(0, &copy_list_element_0));
 451   ASSERT_TRUE(copy_list_element_0);
 452   ASSERT_NE(copy_list_element_0, original_list_element_0);
 453   int copy_list_element_0_value;
 454   ASSERT_TRUE(copy_list_element_0->GetAsInteger(&copy_list_element_0_value));
 455   ASSERT_EQ(0, copy_list_element_0_value);
 456
 457   Value* copy_list_element_1;
 458   ASSERT_TRUE(copy_list->Get(1, &copy_list_element_1));
 459   ASSERT_TRUE(copy_list_element_1);
 460   ASSERT_NE(copy_list_element_1, original_list_element_1);
 461   int copy_list_element_1_value;
 462   ASSERT_TRUE(copy_list_element_1->GetAsInteger(&copy_list_element_1_value));
 463   ASSERT_EQ(1, copy_list_element_1_value);
 464
 465   copy_value = NULL;
 466   ASSERT_TRUE(copy_dict->Get("dictionary", &copy_value));
 467   ASSERT_TRUE(copy_value);
 468   ASSERT_NE(copy_value, original_nested_dictionary);
 469   ASSERT_TRUE(copy_value->IsType(Value::TYPE_DICTIONARY));
 470   DictionaryValue* copy_nested_dictionary = NULL;
 471   ASSERT_TRUE(copy_value->GetAsDictionary(&copy_nested_dictionary));
 472   ASSERT_TRUE(copy_nested_dictionary);
 473   EXPECT_TRUE(copy_nested_dictionary->HasKey("key"));
 474 }
 475
 476 TEST(ValuesTest, Equals) {
 477   Value* null1 = Value::CreateNullValue();
 478   Value* null2 = Value::CreateNullValue();
 479   EXPECT_NE(null1, null2);
 480   EXPECT_TRUE(null1->Equals(null2));
 481
 482   Value* boolean = new FundamentalValue(false);
 483   EXPECT_FALSE(null1->Equals(boolean));
 484   delete null1;
 485   delete null2;
 486   delete boolean;
 487
 488   DictionaryValue dv;
 489   dv.SetBoolean("a", false);
 490   dv.SetInteger("b", 2);
 491   dv.SetDouble("c", 2.5);
 492   dv.SetString("d1", "string");
 493   dv.SetString("d2", ASCIIToUTF16("http://google.com"));
 494   dv.Set("e", Value::CreateNullValue());
 495
 496   scoped_ptr<DictionaryValue> copy;
 497   copy.reset(dv.DeepCopy());
 498   EXPECT_TRUE(dv.Equals(copy.get()));
 499
 500   ListValue* list = new ListValue;
 501   list->Append(Value::CreateNullValue());
 502   list->Append(new DictionaryValue);
 503   dv.Set("f", list);
 504
 505   EXPECT_FALSE(dv.Equals(copy.get()));
 506   copy->Set("f", list->DeepCopy());
 507   EXPECT_TRUE(dv.Equals(copy.get()));
 508
 509   list->Append(new FundamentalValue(true));
 510   EXPECT_FALSE(dv.Equals(copy.get()));
 511
 512   // Check if Equals detects differences in only the keys.
 513   copy.reset(dv.DeepCopy());
 514   EXPECT_TRUE(dv.Equals(copy.get()));
 515   copy->Remove("a", NULL);
 516   copy->SetBoolean("aa", false);
 517   EXPECT_FALSE(dv.Equals(copy.get()));
 518 }
 519
 520 TEST(ValuesTest, StaticEquals) {
 521   scoped_ptr<Value> null1(Value::CreateNullValue());
 522   scoped_ptr<Value> null2(Value::CreateNullValue());
 523   EXPECT_TRUE(Value::Equals(null1.get(), null2.get()));
 524   EXPECT_TRUE(Value::Equals(NULL, NULL));
 525
 526   scoped_ptr<Value> i42(new FundamentalValue(42));
 527   scoped_ptr<Value> j42(new FundamentalValue(42));
 528   scoped_ptr<Value> i17(new FundamentalValue(17));
 529   EXPECT_TRUE(Value::Equals(i42.get(), i42.get()));
 530   EXPECT_TRUE(Value::Equals(j42.get(), i42.get()));
 531   EXPECT_TRUE(Value::Equals(i42.get(), j42.get()));
 532   EXPECT_FALSE(Value::Equals(i42.get(), i17.get()));
 533   EXPECT_FALSE(Value::Equals(i42.get(), NULL));
 534   EXPECT_FALSE(Value::Equals(NULL, i42.get()));
 535
 536   // NULL and Value::CreateNullValue() are intentionally different: We need
 537   // support for NULL as a return value for "undefined" without caring for
 538   // ownership of the pointer.
 539   EXPECT_FALSE(Value::Equals(null1.get(), NULL));
 540   EXPECT_FALSE(Value::Equals(NULL, null1.get()));
 541 }
 542
 543 TEST(ValuesTest, DeepCopyCovariantReturnTypes) {
 544   DictionaryValue original_dict;
 545   Value* original_null = Value::CreateNullValue();
 546   original_dict.Set("null", original_null);
 547   FundamentalValue* original_bool = new FundamentalValue(true);
 548   original_dict.Set("bool", original_bool);
 549   FundamentalValue* original_int = new FundamentalValue(42);
 550   original_dict.Set("int", original_int);
 551   FundamentalValue* original_double = new FundamentalValue(3.14);
 552   original_dict.Set("double", original_double);
 553   StringValue* original_string = new StringValue("hello");
 554   original_dict.Set("string", original_string);
 555   StringValue* original_string16 = new StringValue(ASCIIToUTF16("hello16"));
 556   original_dict.Set("string16", original_string16);
 557
 558   char* original_buffer = new char[42];
 559   memset(original_buffer, '!', 42);
 560   BinaryValue* original_binary = BinaryValue::Create(original_buffer, 42);
 561   original_dict.Set("binary", original_binary);
 562
 563   ListValue* original_list = new ListValue();
 564   FundamentalValue* original_list_element_0 = new FundamentalValue(0);
 565   original_list->Append(original_list_element_0);
 566   FundamentalValue* original_list_element_1 = new FundamentalValue(1);
 567   original_list->Append(original_list_element_1);
 568   original_dict.Set("list", original_list);
 569
 570   Value* original_dict_value = &original_dict;
 571   Value* original_bool_value = original_bool;
 572   Value* original_int_value = original_int;
 573   Value* original_double_value = original_double;
 574   Value* original_string_value = original_string;
 575   Value* original_string16_value = original_string16;
 576   Value* original_binary_value = original_binary;
 577   Value* original_list_value = original_list;
 578
 579   scoped_ptr<Value> copy_dict_value(original_dict_value->DeepCopy());
 580   scoped_ptr<Value> copy_bool_value(original_bool_value->DeepCopy());
 581   scoped_ptr<Value> copy_int_value(original_int_value->DeepCopy());
 582   scoped_ptr<Value> copy_double_value(original_double_value->DeepCopy());
 583   scoped_ptr<Value> copy_string_value(original_string_value->DeepCopy());
 584   scoped_ptr<Value> copy_string16_value(original_string16_value->DeepCopy());
 585   scoped_ptr<Value> copy_binary_value(original_binary_value->DeepCopy());
 586   scoped_ptr<Value> copy_list_value(original_list_value->DeepCopy());
 587
 588   EXPECT_TRUE(original_dict_value->Equals(copy_dict_value.get()));
 589   EXPECT_TRUE(original_bool_value->Equals(copy_bool_value.get()));
 590   EXPECT_TRUE(original_int_value->Equals(copy_int_value.get()));
 591   EXPECT_TRUE(original_double_value->Equals(copy_double_value.get()));
 592   EXPECT_TRUE(original_string_value->Equals(copy_string_value.get()));
 593   EXPECT_TRUE(original_string16_value->Equals(copy_string16_value.get()));
 594   EXPECT_TRUE(original_binary_value->Equals(copy_binary_value.get()));
 595   EXPECT_TRUE(original_list_value->Equals(copy_list_value.get()));
 596 }
 597
 598 TEST(ValuesTest, RemoveEmptyChildren) {
 599   scoped_ptr<DictionaryValue> root(new DictionaryValue);
 600   // Remove empty lists and dictionaries.
 601   root->Set("empty_dict", new DictionaryValue);
 602   root->Set("empty_list", new ListValue);
 603   root->SetWithoutPathExpansion("a.b.c.d.e", new DictionaryValue);
 604   root.reset(root->DeepCopyWithoutEmptyChildren());
 605   EXPECT_TRUE(root->empty());
 606
 607   // Make sure we don't prune too much.
 608   root->SetBoolean("bool", true);
 609   root->Set("empty_dict", new DictionaryValue);
 610   root->SetString("empty_string", "");
 611   root.reset(root->DeepCopyWithoutEmptyChildren());
 612   EXPECT_EQ(2U, root->size());
 613
 614   // Should do nothing.
 615   root.reset(root->DeepCopyWithoutEmptyChildren());
 616   EXPECT_EQ(2U, root->size());
 617
 618   // Nested test cases.  These should all reduce back to the bool and string
 619   // set above.
 620   {
 621     root->Set("a.b.c.d.e", new DictionaryValue);
 622     root.reset(root->DeepCopyWithoutEmptyChildren());
 623     EXPECT_EQ(2U, root->size());
 624   }
 625   {
 626     DictionaryValue* inner = new DictionaryValue;
 627     root->Set("dict_with_emtpy_children", inner);
 628     inner->Set("empty_dict", new DictionaryValue);
 629     inner->Set("empty_list", new ListValue);
 630     root.reset(root->DeepCopyWithoutEmptyChildren());
 631     EXPECT_EQ(2U, root->size());
 632   }
 633   {
 634     ListValue* inner = new ListValue;
 635     root->Set("list_with_empty_children", inner);
 636     inner->Append(new DictionaryValue);
 637     inner->Append(new ListValue);
 638     root.reset(root->DeepCopyWithoutEmptyChildren());
 639     EXPECT_EQ(2U, root->size());
 640   }
 641
 642   // Nested with siblings.
 643   {
 644     ListValue* inner = new ListValue;
 645     root->Set("list_with_empty_children", inner);
 646     inner->Append(new DictionaryValue);
 647     inner->Append(new ListValue);
 648     DictionaryValue* inner2 = new DictionaryValue;
 649     root->Set("dict_with_empty_children", inner2);
 650     inner2->Set("empty_dict", new DictionaryValue);
 651     inner2->Set("empty_list", new ListValue);
 652     root.reset(root->DeepCopyWithoutEmptyChildren());
 653     EXPECT_EQ(2U, root->size());
 654   }
 655
 656   // Make sure nested values don't get pruned.
 657   {
 658     ListValue* inner = new ListValue;
 659     root->Set("list_with_empty_children", inner);
 660     ListValue* inner2 = new ListValue;
 661     inner->Append(new DictionaryValue);
 662     inner->Append(inner2);
 663     inner2->Append(new StringValue("hello"));
 664     root.reset(root->DeepCopyWithoutEmptyChildren());
 665     EXPECT_EQ(3U, root->size());
 666     EXPECT_TRUE(root->GetList("list_with_empty_children", &inner));
 667     EXPECT_EQ(1U, inner->GetSize());  // Dictionary was pruned.
 668     EXPECT_TRUE(inner->GetList(0, &inner2));
 669     EXPECT_EQ(1U, inner2->GetSize());
 670   }
 671 }
 672
 673 TEST(ValuesTest, MergeDictionary) {
 674   scoped_ptr<DictionaryValue> base(new DictionaryValue);
 675   base->SetString("base_key", "base_key_value_base");
 676   base->SetString("collide_key", "collide_key_value_base");
 677   DictionaryValue* base_sub_dict = new DictionaryValue;
 678   base_sub_dict->SetString("sub_base_key", "sub_base_key_value_base");
 679   base_sub_dict->SetString("sub_collide_key", "sub_collide_key_value_base");
 680   base->Set("sub_dict_key", base_sub_dict);
 681
 682   scoped_ptr<DictionaryValue> merge(new DictionaryValue);
 683   merge->SetString("merge_key", "merge_key_value_merge");
 684   merge->SetString("collide_key", "collide_key_value_merge");
 685   DictionaryValue* merge_sub_dict = new DictionaryValue;
 686   merge_sub_dict->SetString("sub_merge_key", "sub_merge_key_value_merge");
 687   merge_sub_dict->SetString("sub_collide_key", "sub_collide_key_value_merge");
 688   merge->Set("sub_dict_key", merge_sub_dict);
 689
 690   base->MergeDictionary(merge.get());
 691
 692   EXPECT_EQ(4U, base->size());
 693   std::string base_key_value;
 694   EXPECT_TRUE(base->GetString("base_key", &base_key_value));
 695   EXPECT_EQ("base_key_value_base", base_key_value); // Base value preserved.
 696   std::string collide_key_value;
 697   EXPECT_TRUE(base->GetString("collide_key", &collide_key_value));
 698   EXPECT_EQ("collide_key_value_merge", collide_key_value); // Replaced.
 699   std::string merge_key_value;
 700   EXPECT_TRUE(base->GetString("merge_key", &merge_key_value));
 701   EXPECT_EQ("merge_key_value_merge", merge_key_value); // Merged in.
 702
 703   DictionaryValue* res_sub_dict;
 704   EXPECT_TRUE(base->GetDictionary("sub_dict_key", &res_sub_dict));
 705   EXPECT_EQ(3U, res_sub_dict->size());
 706   std::string sub_base_key_value;
 707   EXPECT_TRUE(res_sub_dict->GetString("sub_base_key", &sub_base_key_value));
 708   EXPECT_EQ("sub_base_key_value_base", sub_base_key_value); // Preserved.
 709   std::string sub_collide_key_value;
 710   EXPECT_TRUE(res_sub_dict->GetString("sub_collide_key",
 711                                       &sub_collide_key_value));
 712   EXPECT_EQ("sub_collide_key_value_merge", sub_collide_key_value); // Replaced.
 713   std::string sub_merge_key_value;
 714   EXPECT_TRUE(res_sub_dict->GetString("sub_merge_key", &sub_merge_key_value));
 715   EXPECT_EQ("sub_merge_key_value_merge", sub_merge_key_value); // Merged in.
 716 }
 717
 718 TEST(ValuesTest, MergeDictionaryDeepCopy) {
 719   DictionaryValue* child = new DictionaryValue;
 720   child->SetString("test", "value");
 721   EXPECT_EQ(1U, child->size());
 722
 723   std::string value;
 724   EXPECT_TRUE(child->GetString("test", &value));
 725   EXPECT_EQ("value", value);
 726
 727   scoped_ptr<DictionaryValue> base(new DictionaryValue);
 728   base->Set("dict", child);
 729   EXPECT_EQ(1U, base->size());
 730
 731   DictionaryValue* ptr;
 732   EXPECT_TRUE(base->GetDictionary("dict", &ptr));
 733   EXPECT_EQ(child, ptr);
 734
 735   scoped_ptr<DictionaryValue> merged(new DictionaryValue);
 736   merged->MergeDictionary(base.get());
 737   EXPECT_EQ(1U, merged->size());
 738   EXPECT_TRUE(merged->GetDictionary("dict", &ptr));
 739   EXPECT_NE(child, ptr);
 740   EXPECT_TRUE(ptr->GetString("test", &value));
 741   EXPECT_EQ("value", value);
 742
 743   child->SetString("test", "overwrite");
 744   base.reset();
 745   EXPECT_TRUE(ptr->GetString("test", &value));
 746   EXPECT_EQ("value", value);
 747 }
 748
 749 TEST(ValuesTest, DictionaryIterator) {
 750   DictionaryValue dict;
 751   for (DictionaryValue::Iterator it(dict); it.HasNext(); it.Advance()) {
 752     ADD_FAILURE();
 753   }
 754
 755   StringValue value1("value1");
 756   dict.Set("key1", value1.DeepCopy());
 757   bool seen1 = false;
 758   for (DictionaryValue::Iterator it(dict); it.HasNext(); it.Advance()) {
 759     EXPECT_FALSE(seen1);
 760     EXPECT_EQ("key1", it.key());
 761     EXPECT_TRUE(value1.Equals(&it.value()));
 762     seen1 = true;
 763   }
 764   EXPECT_TRUE(seen1);
 765
 766   StringValue value2("value2");
 767   dict.Set("key2", value2.DeepCopy());
 768   bool seen2 = seen1 = false;
 769   for (DictionaryValue::Iterator it(dict); it.HasNext(); it.Advance()) {
 770     if (it.key() == "key1") {
 771       EXPECT_FALSE(seen1);
 772       EXPECT_TRUE(value1.Equals(&it.value()));
 773       seen1 = true;
 774     } else if (it.key() == "key2") {
 775       EXPECT_FALSE(seen2);
 776       EXPECT_TRUE(value2.Equals(&it.value()));
 777       seen2 = true;
 778     } else {
 779       ADD_FAILURE();
 780     }
 781   }
 782   EXPECT_TRUE(seen1);
 783   EXPECT_TRUE(seen2);
 784 }
 785
 786 }  // namespace base