BinaryValue support for NULL buffer.

base/values_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 87 matching lines @@
   base::FundamentalValue sought_value(42);
   base::FundamentalValue not_found_value(false);
 
   ASSERT_NE(mixed_list->end(), mixed_list->Find(sought_value));
   ASSERT_TRUE((*mixed_list->Find(sought_value))->GetAsInteger(&int_value));
   ASSERT_EQ(42, int_value);
   ASSERT_EQ(mixed_list->end(), mixed_list->Find(not_found_value));
 }
 
 TEST(ValuesTest, BinaryValue) {
-  char* buffer = NULL;
-  // Passing a null buffer pointer doesn't yield a BinaryValue
-  scoped_ptr<BinaryValue> binary(BinaryValue::Create(buffer, 0));
-  ASSERT_FALSE(binary.get());
+  // Default constructor creates a BinaryValue with a null buffer and size 0.
+  scoped_ptr<BinaryValue> binary(new BinaryValue());
+  ASSERT_TRUE(binary.get());
+  ASSERT_EQ(NULL, binary->GetBuffer());
+  ASSERT_EQ(0U, binary->GetSize());
 
-  // If you want to represent an empty binary value, use a zero-length buffer.
-  buffer = new char[1];
-  ASSERT_TRUE(buffer);
-  binary.reset(BinaryValue::Create(buffer, 0));
+  // Test the common case of a non-empty buffer
+  char* buffer = new char[15];
+  binary.reset(new BinaryValue(scoped_ptr<char[]>(buffer), 15));
   ASSERT_TRUE(binary.get());
   ASSERT_TRUE(binary->GetBuffer());
   ASSERT_EQ(buffer, binary->GetBuffer());
-  ASSERT_EQ(0U, binary->GetSize());
-
-  // Test the common case of a non-empty buffer
-  buffer = new char[15];
-  binary.reset(BinaryValue::Create(buffer, 15));
-  ASSERT_TRUE(binary.get());
-  ASSERT_TRUE(binary->GetBuffer());
-  ASSERT_EQ(buffer, binary->GetBuffer());
   ASSERT_EQ(15U, binary->GetSize());
 
   char stack_buffer[42];
   memset(stack_buffer, '!', 42);
   binary.reset(BinaryValue::CreateWithCopiedBuffer(stack_buffer, 42));
   ASSERT_TRUE(binary.get());
   ASSERT_TRUE(binary->GetBuffer());
   ASSERT_NE(stack_buffer, binary->GetBuffer());
   ASSERT_EQ(42U, binary->GetSize());
   ASSERT_EQ(0, memcmp(stack_buffer, binary->GetBuffer(), binary->GetSize()));
@@ skipping 203 matching lines @@
   original_dict.Set("bool", original_bool);
   FundamentalValue* original_int = new FundamentalValue(42);
   original_dict.Set("int", original_int);
   FundamentalValue* original_double = new FundamentalValue(3.14);
   original_dict.Set("double", original_double);
   StringValue* original_string = new StringValue("hello");
   original_dict.Set("string", original_string);
   StringValue* original_string16 = new StringValue(ASCIIToUTF16("hello16"));
   original_dict.Set("string16", original_string16);
 
-  char* original_buffer = new char[42];
-  memset(original_buffer, '!', 42);
-  BinaryValue* original_binary = BinaryValue::Create(original_buffer, 42);
+  scoped_ptr<char[]> original_buffer(new char[42]);
+  memset(original_buffer.get(), '!', 42);
+  BinaryValue* original_binary = new BinaryValue(original_buffer.Pass(), 42);
   original_dict.Set("binary", original_binary);
 
   ListValue* original_list = new ListValue();
   FundamentalValue* original_list_element_0 = new FundamentalValue(0);
   original_list->Append(original_list_element_0);
   FundamentalValue* original_list_element_1 = new FundamentalValue(1);
   original_list->Append(original_list_element_1);
   original_dict.Set("list", original_list);
 
   DictionaryValue* original_nested_dictionary = new DictionaryValue();
@@ skipping 184 matching lines @@
   original_dict.Set("bool", original_bool);
   FundamentalValue* original_int = new FundamentalValue(42);
   original_dict.Set("int", original_int);
   FundamentalValue* original_double = new FundamentalValue(3.14);
   original_dict.Set("double", original_double);
   StringValue* original_string = new StringValue("hello");
   original_dict.Set("string", original_string);
   StringValue* original_string16 = new StringValue(ASCIIToUTF16("hello16"));
   original_dict.Set("string16", original_string16);
 
-  char* original_buffer = new char[42];
-  memset(original_buffer, '!', 42);
-  BinaryValue* original_binary = BinaryValue::Create(original_buffer, 42);
+  scoped_ptr<char[]> original_buffer(new char[42]);
+  memset(original_buffer.get(), '!', 42);
+  BinaryValue* original_binary = new BinaryValue(original_buffer.Pass(), 42);
   original_dict.Set("binary", original_binary);
 
   ListValue* original_list = new ListValue();
   FundamentalValue* original_list_element_0 = new FundamentalValue(0);
   original_list->Append(original_list_element_0);
   FundamentalValue* original_list_element_1 = new FundamentalValue(1);
   original_list->Append(original_list_element_1);
   original_dict.Set("list", original_list);
 
   Value* original_dict_value = &original_dict;
@@ skipping 206 matching lines @@
       seen2 = true;
     } else {
       ADD_FAILURE();
     }
   }
   EXPECT_TRUE(seen1);
   EXPECT_TRUE(seen2);
 }
 
 }  // namespace base