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// 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, Writing) {
// Test null
Value* root = Value::CreateNullValue();
std::string output_js;
JSONWriter::Write(root, &output_js);
ASSERT_EQ("null", output_js);
delete root;
// Test empty dict
root = new DictionaryValue;
JSONWriter::Write(root, &output_js);
ASSERT_EQ("{}", output_js);
delete root;
// Test empty list
root = new ListValue;
JSONWriter::Write(root, &output_js);
ASSERT_EQ("[]", output_js);
delete root;
// Test Real values should always have a decimal or an 'e'.
root = new FundamentalValue(1.0);
JSONWriter::Write(root, &output_js);
ASSERT_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);
JSONWriter::Write(root, &output_js);
ASSERT_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);
JSONWriter::Write(root, &output_js);
ASSERT_EQ("-0.8", output_js);
delete root;
// 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);
inner_dict->SetInteger("inner int", 10);
ListValue* inner_list = new ListValue;
list->Append(inner_list);
list->Append(new FundamentalValue(true));
// Test the pretty-printer.
JSONWriter::Write(&root_dict, &output_js);
ASSERT_EQ("{\"list\":[{\"inner int\":10},[],true]}", output_js);
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
ASSERT_EQ("{" JSON_NEWLINE
" \"list\": [ {" JSON_NEWLINE
" \"inner int\": 10" JSON_NEWLINE
" }, [ ], true ]" JSON_NEWLINE
"}" JSON_NEWLINE,
output_js);
#undef JSON_NEWLINE
// Test keys with periods
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);
JSONWriter::Write(&period_dict, &output_js);
ASSERT_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));
JSONWriter::Write(&period_dict3, &output_js);
ASSERT_EQ("{\"a\":{\"b\":2},\"a.b\":1}", output_js);
// Test omitting binary values.
root = BinaryValue::CreateWithCopiedBuffer("asdf", 4);
JSONWriter::WriteWithOptions(root, JSONWriter::OPTIONS_OMIT_BINARY_VALUES,
&output_js);
ASSERT_TRUE(output_js.empty());
delete root;
ListValue binary_list;
binary_list.Append(new FundamentalValue(5));
binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4));
binary_list.Append(new FundamentalValue(2));
JSONWriter::WriteWithOptions(&binary_list,
JSONWriter::OPTIONS_OMIT_BINARY_VALUES,
&output_js);
ASSERT_EQ("[5,2]", output_js);
DictionaryValue binary_dict;
binary_dict.Set("a", new FundamentalValue(5));
binary_dict.Set("b", BinaryValue::CreateWithCopiedBuffer("asdf", 4));
binary_dict.Set("c", new FundamentalValue(2));
JSONWriter::WriteWithOptions(&binary_dict,
JSONWriter::OPTIONS_OMIT_BINARY_VALUES,
&output_js);
ASSERT_EQ("{\"a\":5,\"c\":2}", output_js);
// Test allowing a double with no fractional part to be written as an integer.
FundamentalValue double_value(1e10);
JSONWriter::WriteWithOptions(
&double_value,
JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION,
&output_js);
ASSERT_EQ("10000000000", output_js);
}
} // namespace base
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