Update from https://crrev.com/329939

base/json/json_writer_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 "base/json/json_writer.h"
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
 TEST(JSONWriterTest, BasicTypes) {
   std::string output_js;
 
   // Test null.
-  Value* root = Value::CreateNullValue();
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  EXPECT_TRUE(JSONWriter::Write(Value::CreateNullValue().get(), &output_js));
   EXPECT_EQ("null", output_js);
-  delete root;
 
   // Test empty dict.
-  root = new DictionaryValue;
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  DictionaryValue dict;
+  EXPECT_TRUE(JSONWriter::Write(&dict, &output_js));
   EXPECT_EQ("{}", output_js);
-  delete root;
 
   // Test empty list.
-  root = new ListValue;
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  ListValue list;
+  EXPECT_TRUE(JSONWriter::Write(&list, &output_js));
   EXPECT_EQ("[]", output_js);
-  delete root;
 
   // Test integer values.
-  root = new FundamentalValue(42);
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  FundamentalValue int_value(42);
+  EXPECT_TRUE(JSONWriter::Write(&int_value, &output_js));
   EXPECT_EQ("42", output_js);
-  delete root;
 
   // Test boolean values.
-  root = new FundamentalValue(true);
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  FundamentalValue bool_value(true);
+  EXPECT_TRUE(JSONWriter::Write(&bool_value, &output_js));
   EXPECT_EQ("true", output_js);
-  delete root;
 
   // Test Real values should always have a decimal or an 'e'.
-  root = new FundamentalValue(1.0);
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  FundamentalValue double_value(1.0);
+  EXPECT_TRUE(JSONWriter::Write(&double_value, &output_js));
   EXPECT_EQ("1.0", output_js);
-  delete root;
 
   // Test Real values in the the range (-1, 1) must have leading zeros
-  root = new FundamentalValue(0.2);
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  FundamentalValue double_value2(0.2);
+  EXPECT_TRUE(JSONWriter::Write(&double_value2, &output_js));
   EXPECT_EQ("0.2", output_js);
-  delete root;
 
   // Test Real values in the the range (-1, 1) must have leading zeros
-  root = new FundamentalValue(-0.8);
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  FundamentalValue double_value3(-0.8);
+  EXPECT_TRUE(JSONWriter::Write(&double_value3, &output_js));
   EXPECT_EQ("-0.8", output_js);
-  delete root;
 
   // Test String values.
-  root = new StringValue("foo");
-  EXPECT_TRUE(JSONWriter::Write(root, &output_js));
+  StringValue string_value("foo");
+  EXPECT_TRUE(JSONWriter::Write(&string_value, &output_js));
   EXPECT_EQ("\"foo\"", output_js);
-  delete root;
 }
 
-
 TEST(JSONWriterTest, NestedTypes) {
   std::string output_js;
 
   // Writer unittests like empty list/dict nesting,
   // list list nesting, etc.
   DictionaryValue root_dict;
-  ListValue* list = new ListValue;
-  root_dict.Set("list", list);
-  DictionaryValue* inner_dict = new DictionaryValue;
-  list->Append(inner_dict);
+  scoped_ptr<ListValue> list(new ListValue());
+  scoped_ptr<DictionaryValue> inner_dict(new DictionaryValue());
   inner_dict->SetInteger("inner int", 10);
-  ListValue* inner_list = new ListValue;
-  list->Append(inner_list);
-  list->Append(new FundamentalValue(true));
+  list->Append(inner_dict.Pass());
+  list->Append(make_scoped_ptr(new ListValue()));
+  list->AppendBoolean(true);
+  root_dict.Set("list", list.Pass());
 
   // Test the pretty-printer.
   EXPECT_TRUE(JSONWriter::Write(&root_dict, &output_js));
   EXPECT_EQ("{\"list\":[{\"inner int\":10},[],true]}", output_js);
   EXPECT_TRUE(JSONWriter::WriteWithOptions(&root_dict,
                                            JSONWriter::OPTIONS_PRETTY_PRINT,
                                            &output_js));
 
   // The pretty-printer uses a different newline style on Windows than on
   // other platforms.
 #if defined(OS_WIN)
 #define JSON_NEWLINE "\r\n"
 #else
 #define JSON_NEWLINE "\n"
 #endif
   EXPECT_EQ("{" JSON_NEWLINE
             "   \"list\": [ {" JSON_NEWLINE
             "      \"inner int\": 10" JSON_NEWLINE
             "   }, [  ], true ]" JSON_NEWLINE
             "}" JSON_NEWLINE,
             output_js);
 #undef JSON_NEWLINE
 }
 
 TEST(JSONWriterTest, KeysWithPeriods) {
   std::string output_js;
 
   DictionaryValue period_dict;
-  period_dict.SetWithoutPathExpansion("a.b", new FundamentalValue(3));
-  period_dict.SetWithoutPathExpansion("c", new FundamentalValue(2));
-  DictionaryValue* period_dict2 = new DictionaryValue;
-  period_dict2->SetWithoutPathExpansion("g.h.i.j", new FundamentalValue(1));
-  period_dict.SetWithoutPathExpansion("d.e.f", period_dict2);
+  period_dict.SetIntegerWithoutPathExpansion("a.b", 3);
+  period_dict.SetIntegerWithoutPathExpansion("c", 2);
+  scoped_ptr<DictionaryValue> period_dict2(new DictionaryValue());
+  period_dict2->SetIntegerWithoutPathExpansion("g.h.i.j", 1);
+  period_dict.SetWithoutPathExpansion("d.e.f", period_dict2.Pass());
   EXPECT_TRUE(JSONWriter::Write(&period_dict, &output_js));
   EXPECT_EQ("{\"a.b\":3,\"c\":2,\"d.e.f\":{\"g.h.i.j\":1}}", output_js);
 
   DictionaryValue period_dict3;
-  period_dict3.Set("a.b", new FundamentalValue(2));
-  period_dict3.SetWithoutPathExpansion("a.b", new FundamentalValue(1));
+  period_dict3.SetInteger("a.b", 2);
+  period_dict3.SetIntegerWithoutPathExpansion("a.b", 1);
   EXPECT_TRUE(JSONWriter::Write(&period_dict3, &output_js));
   EXPECT_EQ("{\"a\":{\"b\":2},\"a.b\":1}", output_js);
 }
 
 TEST(JSONWriterTest, BinaryValues) {
   std::string output_js;
 
   // Binary values should return errors unless suppressed via the
   // OPTIONS_OMIT_BINARY_VALUES flag.
-  Value* root = BinaryValue::CreateWithCopiedBuffer("asdf", 4);
-  EXPECT_FALSE(JSONWriter::Write(root, &output_js));
+  scoped_ptr<Value> root(BinaryValue::CreateWithCopiedBuffer("asdf", 4));
+  EXPECT_FALSE(JSONWriter::Write(root.get(), &output_js));
   EXPECT_TRUE(JSONWriter::WriteWithOptions(
-      root, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js));
+      root.get(), JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js));
   EXPECT_TRUE(output_js.empty());
-  delete root;
 
   ListValue binary_list;
   binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4));
-  binary_list.Append(new FundamentalValue(5));
+  binary_list.Append(make_scoped_ptr(new FundamentalValue(5)));
   binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4));
-  binary_list.Append(new FundamentalValue(2));
+  binary_list.Append(make_scoped_ptr(new FundamentalValue(2)));
   binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4));
   EXPECT_FALSE(JSONWriter::Write(&binary_list, &output_js));
   EXPECT_TRUE(JSONWriter::WriteWithOptions(
       &binary_list, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js));
   EXPECT_EQ("[5,2]", output_js);
 
   DictionaryValue binary_dict;
-  binary_dict.Set("a", BinaryValue::CreateWithCopiedBuffer("asdf", 4));
-  binary_dict.Set("b", new FundamentalValue(5));
-  binary_dict.Set("c", BinaryValue::CreateWithCopiedBuffer("asdf", 4));
-  binary_dict.Set("d", new FundamentalValue(2));
-  binary_dict.Set("e", BinaryValue::CreateWithCopiedBuffer("asdf", 4));
+  binary_dict.Set(
+      "a", make_scoped_ptr(BinaryValue::CreateWithCopiedBuffer("asdf", 4)));
+  binary_dict.SetInteger("b", 5);
+  binary_dict.Set(
+      "c", make_scoped_ptr(BinaryValue::CreateWithCopiedBuffer("asdf", 4)));
+  binary_dict.SetInteger("d", 2);
+  binary_dict.Set(
+      "e", make_scoped_ptr(BinaryValue::CreateWithCopiedBuffer("asdf", 4)));
   EXPECT_FALSE(JSONWriter::Write(&binary_dict, &output_js));
   EXPECT_TRUE(JSONWriter::WriteWithOptions(
       &binary_dict, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js));
   EXPECT_EQ("{\"b\":5,\"d\":2}", output_js);
 }
 
 TEST(JSONWriterTest, DoublesAsInts) {
   std::string output_js;
 
   // Test allowing a double with no fractional part to be written as an integer.
   FundamentalValue double_value(1e10);
   EXPECT_TRUE(JSONWriter::WriteWithOptions(
       &double_value,
       JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION,
       &output_js));
   EXPECT_EQ("10000000000", output_js);
 }
 
 }  // namespace base