blob: 399bbd4a43108a90e054f5de3fcedfcbf00950a1 [file] [log] [blame]
// 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 <memory>
#include <string>
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/json/json_file_value_serializer.h"
#include "base/json/json_reader.h"
#include "base/json/json_string_value_serializer.h"
#include "base/json/json_writer.h"
#include "base/path_service.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "build/build_config.h"
#include "starboard/common/string.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
// Some proper JSON to test with:
const char kProperJSON[] =
"{\n"
" \"compound\": {\n"
" \"a\": 1,\n"
" \"b\": 2\n"
" },\n"
" \"some_String\": \"1337\",\n"
" \"some_int\": 42,\n"
" \"the_list\": [ \"val1\", \"val2\" ]\n"
"}\n";
// Some proper JSON with trailing commas:
const char kProperJSONWithCommas[] =
"{\n"
"\t\"some_int\": 42,\n"
"\t\"some_String\": \"1337\",\n"
"\t\"the_list\": [\"val1\", \"val2\", ],\n"
"\t\"compound\": { \"a\": 1, \"b\": 2, },\n"
"}\n";
// kProperJSON with a few misc characters at the begin and end.
const char kProperJSONPadded[] =
")]}'\n"
"{\n"
" \"compound\": {\n"
" \"a\": 1,\n"
" \"b\": 2\n"
" },\n"
" \"some_String\": \"1337\",\n"
" \"some_int\": 42,\n"
" \"the_list\": [ \"val1\", \"val2\" ]\n"
"}\n"
"?!ab\n";
const char kWinLineEnds[] = "\r\n";
const char kLinuxLineEnds[] = "\n";
// Verifies the generated JSON against the expected output.
void CheckJSONIsStillTheSame(const Value& value) {
// Serialize back the output.
std::string serialized_json;
JSONStringValueSerializer str_serializer(&serialized_json);
str_serializer.set_pretty_print(true);
ASSERT_TRUE(str_serializer.Serialize(value));
// Unify line endings between platforms.
ReplaceSubstringsAfterOffset(&serialized_json, 0,
kWinLineEnds, kLinuxLineEnds);
// Now compare the input with the output.
ASSERT_EQ(kProperJSON, serialized_json);
}
void ValidateJsonList(const std::string& json) {
std::unique_ptr<ListValue> list = ListValue::From(JSONReader::Read(json));
ASSERT_TRUE(list);
ASSERT_EQ(1U, list->GetSize());
Value* elt = nullptr;
ASSERT_TRUE(list->Get(0, &elt));
int value = 0;
ASSERT_TRUE(elt && elt->GetAsInteger(&value));
ASSERT_EQ(1, value);
}
// Test proper JSON deserialization from string is working.
TEST(JSONValueDeserializerTest, ReadProperJSONFromString) {
// Try to deserialize it through the serializer.
JSONStringValueDeserializer str_deserializer(kProperJSON);
int error_code = 0;
std::string error_message;
std::unique_ptr<Value> value =
str_deserializer.Deserialize(&error_code, &error_message);
ASSERT_TRUE(value);
ASSERT_EQ(0, error_code);
ASSERT_TRUE(error_message.empty());
// Verify if the same JSON is still there.
CheckJSONIsStillTheSame(*value);
}
// Test proper JSON deserialization from a StringPiece substring.
TEST(JSONValueDeserializerTest, ReadProperJSONFromStringPiece) {
// Create a StringPiece for the substring of kProperJSONPadded that matches
// kProperJSON.
StringPiece proper_json(kProperJSONPadded);
proper_json = proper_json.substr(5, proper_json.length() - 10);
JSONStringValueDeserializer str_deserializer(proper_json);
int error_code = 0;
std::string error_message;
std::unique_ptr<Value> value =
str_deserializer.Deserialize(&error_code, &error_message);
ASSERT_TRUE(value);
ASSERT_EQ(0, error_code);
ASSERT_TRUE(error_message.empty());
// Verify if the same JSON is still there.
CheckJSONIsStillTheSame(*value);
}
// Test that trialing commas are only properly deserialized from string when
// the proper flag for that is set.
TEST(JSONValueDeserializerTest, ReadJSONWithTrailingCommasFromString) {
// Try to deserialize it through the serializer.
JSONStringValueDeserializer str_deserializer(kProperJSONWithCommas);
int error_code = 0;
std::string error_message;
std::unique_ptr<Value> value =
str_deserializer.Deserialize(&error_code, &error_message);
ASSERT_FALSE(value);
ASSERT_NE(0, error_code);
ASSERT_FALSE(error_message.empty());
// Repeat with commas allowed.
JSONStringValueDeserializer str_deserializer2(kProperJSONWithCommas,
JSON_ALLOW_TRAILING_COMMAS);
value = str_deserializer2.Deserialize(&error_code, &error_message);
ASSERT_TRUE(value);
ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
// Verify if the same JSON is still there.
CheckJSONIsStillTheSame(*value);
}
// Test proper JSON deserialization from file is working.
TEST(JSONValueDeserializerTest, ReadProperJSONFromFile) {
ScopedTempDir tempdir;
ASSERT_TRUE(tempdir.CreateUniqueTempDir());
// Write it down in the file.
FilePath temp_file(tempdir.GetPath().AppendASCII("test.json"));
ASSERT_EQ(static_cast<int>(SbStringGetLength(kProperJSON)),
WriteFile(temp_file, kProperJSON, SbStringGetLength(kProperJSON)));
// Try to deserialize it through the serializer.
JSONFileValueDeserializer file_deserializer(temp_file);
int error_code = 0;
std::string error_message;
std::unique_ptr<Value> value =
file_deserializer.Deserialize(&error_code, &error_message);
ASSERT_TRUE(value);
ASSERT_EQ(0, error_code);
ASSERT_TRUE(error_message.empty());
// Verify if the same JSON is still there.
CheckJSONIsStillTheSame(*value);
}
// Test that trialing commas are only properly deserialized from file when
// the proper flag for that is set.
TEST(JSONValueDeserializerTest, ReadJSONWithCommasFromFile) {
ScopedTempDir tempdir;
ASSERT_TRUE(tempdir.CreateUniqueTempDir());
// Write it down in the file.
FilePath temp_file(tempdir.GetPath().AppendASCII("test.json"));
ASSERT_EQ(static_cast<int>(SbStringGetLength(kProperJSONWithCommas)),
WriteFile(temp_file, kProperJSONWithCommas,
SbStringGetLength(kProperJSONWithCommas)));
// Try to deserialize it through the serializer.
JSONFileValueDeserializer file_deserializer(temp_file);
// This must fail without the proper flag.
int error_code = 0;
std::string error_message;
std::unique_ptr<Value> value =
file_deserializer.Deserialize(&error_code, &error_message);
ASSERT_FALSE(value);
ASSERT_NE(0, error_code);
ASSERT_FALSE(error_message.empty());
// Repeat with commas allowed.
JSONFileValueDeserializer file_deserializer2(temp_file,
JSON_ALLOW_TRAILING_COMMAS);
value = file_deserializer2.Deserialize(&error_code, &error_message);
ASSERT_TRUE(value);
ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
// Verify if the same JSON is still there.
CheckJSONIsStillTheSame(*value);
}
TEST(JSONValueDeserializerTest, AllowTrailingComma) {
static const char kTestWithCommas[] = "{\"key\": [true,],}";
static const char kTestNoCommas[] = "{\"key\": [true]}";
JSONStringValueDeserializer deserializer(kTestWithCommas,
JSON_ALLOW_TRAILING_COMMAS);
JSONStringValueDeserializer deserializer_expected(kTestNoCommas);
std::unique_ptr<Value> root = deserializer.Deserialize(nullptr, nullptr);
ASSERT_TRUE(root);
std::unique_ptr<Value> root_expected;
root_expected = deserializer_expected.Deserialize(nullptr, nullptr);
ASSERT_TRUE(root_expected);
ASSERT_TRUE(root->Equals(root_expected.get()));
}
TEST(JSONValueSerializerTest, Roundtrip) {
static const char kOriginalSerialization[] =
"{\"bool\":true,\"double\":3.14,\"int\":42,\"list\":[1,2],\"null\":null}";
JSONStringValueDeserializer deserializer(kOriginalSerialization);
std::unique_ptr<DictionaryValue> root_dict =
DictionaryValue::From(deserializer.Deserialize(nullptr, nullptr));
ASSERT_TRUE(root_dict);
Value* null_value = nullptr;
ASSERT_TRUE(root_dict->Get("null", &null_value));
ASSERT_TRUE(null_value);
ASSERT_TRUE(null_value->is_none());
bool bool_value = false;
ASSERT_TRUE(root_dict->GetBoolean("bool", &bool_value));
ASSERT_TRUE(bool_value);
int int_value = 0;
ASSERT_TRUE(root_dict->GetInteger("int", &int_value));
ASSERT_EQ(42, int_value);
double double_value = 0.0;
ASSERT_TRUE(root_dict->GetDouble("double", &double_value));
ASSERT_DOUBLE_EQ(3.14, double_value);
std::string test_serialization;
JSONStringValueSerializer mutable_serializer(&test_serialization);
ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
ASSERT_EQ(kOriginalSerialization, test_serialization);
mutable_serializer.set_pretty_print(true);
ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
// JSON output 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
const std::string pretty_serialization =
"{" JSON_NEWLINE
" \"bool\": true," JSON_NEWLINE
" \"double\": 3.14," JSON_NEWLINE
" \"int\": 42," JSON_NEWLINE
" \"list\": [ 1, 2 ]," JSON_NEWLINE
" \"null\": null" JSON_NEWLINE
"}" JSON_NEWLINE;
#undef JSON_NEWLINE
ASSERT_EQ(pretty_serialization, test_serialization);
}
TEST(JSONValueSerializerTest, StringEscape) {
string16 all_chars;
for (int i = 1; i < 256; ++i) {
all_chars += static_cast<char16>(i);
}
// Generated in in Firefox using the following js (with an extra backslash for
// double quote):
// var s = '';
// for (var i = 1; i < 256; ++i) { s += String.fromCharCode(i); }
// uneval(s).replace(/\\/g, "\\\\");
std::string all_chars_expected =
"\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007\\b\\t\\n\\u000B\\f\\r"
"\\u000E\\u000F\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017"
"\\u0018\\u0019\\u001A\\u001B\\u001C\\u001D\\u001E\\u001F !\\\"#$%&'()*+,"
"-./0123456789:;\\u003C=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_`abcde"
"fghijklmnopqrstuvwxyz{|}~\x7F\xC2\x80\xC2\x81\xC2\x82\xC2\x83\xC2\x84"
"\xC2\x85\xC2\x86\xC2\x87\xC2\x88\xC2\x89\xC2\x8A\xC2\x8B\xC2\x8C\xC2\x8D"
"\xC2\x8E\xC2\x8F\xC2\x90\xC2\x91\xC2\x92\xC2\x93\xC2\x94\xC2\x95\xC2\x96"
"\xC2\x97\xC2\x98\xC2\x99\xC2\x9A\xC2\x9B\xC2\x9C\xC2\x9D\xC2\x9E\xC2\x9F"
"\xC2\xA0\xC2\xA1\xC2\xA2\xC2\xA3\xC2\xA4\xC2\xA5\xC2\xA6\xC2\xA7\xC2\xA8"
"\xC2\xA9\xC2\xAA\xC2\xAB\xC2\xAC\xC2\xAD\xC2\xAE\xC2\xAF\xC2\xB0\xC2\xB1"
"\xC2\xB2\xC2\xB3\xC2\xB4\xC2\xB5\xC2\xB6\xC2\xB7\xC2\xB8\xC2\xB9\xC2\xBA"
"\xC2\xBB\xC2\xBC\xC2\xBD\xC2\xBE\xC2\xBF\xC3\x80\xC3\x81\xC3\x82\xC3\x83"
"\xC3\x84\xC3\x85\xC3\x86\xC3\x87\xC3\x88\xC3\x89\xC3\x8A\xC3\x8B\xC3\x8C"
"\xC3\x8D\xC3\x8E\xC3\x8F\xC3\x90\xC3\x91\xC3\x92\xC3\x93\xC3\x94\xC3\x95"
"\xC3\x96\xC3\x97\xC3\x98\xC3\x99\xC3\x9A\xC3\x9B\xC3\x9C\xC3\x9D\xC3\x9E"
"\xC3\x9F\xC3\xA0\xC3\xA1\xC3\xA2\xC3\xA3\xC3\xA4\xC3\xA5\xC3\xA6\xC3\xA7"
"\xC3\xA8\xC3\xA9\xC3\xAA\xC3\xAB\xC3\xAC\xC3\xAD\xC3\xAE\xC3\xAF\xC3\xB0"
"\xC3\xB1\xC3\xB2\xC3\xB3\xC3\xB4\xC3\xB5\xC3\xB6\xC3\xB7\xC3\xB8\xC3\xB9"
"\xC3\xBA\xC3\xBB\xC3\xBC\xC3\xBD\xC3\xBE\xC3\xBF";
std::string expected_output = "{\"all_chars\":\"" + all_chars_expected +
"\"}";
// Test JSONWriter interface
std::string output_js;
DictionaryValue valueRoot;
valueRoot.SetString("all_chars", all_chars);
JSONWriter::Write(valueRoot, &output_js);
ASSERT_EQ(expected_output, output_js);
// Test JSONValueSerializer interface (uses JSONWriter).
JSONStringValueSerializer serializer(&output_js);
ASSERT_TRUE(serializer.Serialize(valueRoot));
ASSERT_EQ(expected_output, output_js);
}
TEST(JSONValueSerializerTest, UnicodeStrings) {
// unicode string json -> escaped ascii text
DictionaryValue root;
string16 test(WideToUTF16(L"\x7F51\x9875"));
root.SetString("web", test);
static const char kExpected[] = "{\"web\":\"\xE7\xBD\x91\xE9\xA1\xB5\"}";
std::string actual;
JSONStringValueSerializer serializer(&actual);
ASSERT_TRUE(serializer.Serialize(root));
ASSERT_EQ(kExpected, actual);
// escaped ascii text -> json
JSONStringValueDeserializer deserializer(kExpected);
std::unique_ptr<Value> deserial_root =
deserializer.Deserialize(nullptr, nullptr);
ASSERT_TRUE(deserial_root);
DictionaryValue* dict_root =
static_cast<DictionaryValue*>(deserial_root.get());
string16 web_value;
ASSERT_TRUE(dict_root->GetString("web", &web_value));
ASSERT_EQ(test, web_value);
}
TEST(JSONValueSerializerTest, HexStrings) {
// hex string json -> escaped ascii text
DictionaryValue root;
string16 test(WideToUTF16(L"\x01\x02"));
root.SetString("test", test);
static const char kExpected[] = "{\"test\":\"\\u0001\\u0002\"}";
std::string actual;
JSONStringValueSerializer serializer(&actual);
ASSERT_TRUE(serializer.Serialize(root));
ASSERT_EQ(kExpected, actual);
// escaped ascii text -> json
JSONStringValueDeserializer deserializer(kExpected);
std::unique_ptr<Value> deserial_root =
deserializer.Deserialize(nullptr, nullptr);
ASSERT_TRUE(deserial_root);
DictionaryValue* dict_root =
static_cast<DictionaryValue*>(deserial_root.get());
string16 test_value;
ASSERT_TRUE(dict_root->GetString("test", &test_value));
ASSERT_EQ(test, test_value);
// Test converting escaped regular chars
static const char kEscapedChars[] = "{\"test\":\"\\u0067\\u006f\"}";
JSONStringValueDeserializer deserializer2(kEscapedChars);
deserial_root = deserializer2.Deserialize(nullptr, nullptr);
ASSERT_TRUE(deserial_root);
dict_root = static_cast<DictionaryValue*>(deserial_root.get());
ASSERT_TRUE(dict_root->GetString("test", &test_value));
ASSERT_EQ(ASCIIToUTF16("go"), test_value);
}
TEST(JSONValueSerializerTest, JSONReaderComments) {
ValidateJsonList("[ // 2, 3, ignore me ] \n1 ]");
ValidateJsonList("[ /* 2, \n3, ignore me ]*/ \n1 ]");
ValidateJsonList("//header\n[ // 2, \n// 3, \n1 ]// footer");
ValidateJsonList("/*\n[ // 2, \n// 3, \n1 ]*/[1]");
ValidateJsonList("[ 1 /* one */ ] /* end */");
ValidateJsonList("[ 1 //// ,2\r\n ]");
// It's ok to have a comment in a string.
std::unique_ptr<ListValue> list =
ListValue::From(JSONReader::Read("[\"// ok\\n /* foo */ \"]"));
ASSERT_TRUE(list);
ASSERT_EQ(1U, list->GetSize());
Value* elt = nullptr;
ASSERT_TRUE(list->Get(0, &elt));
std::string value;
ASSERT_TRUE(elt && elt->GetAsString(&value));
ASSERT_EQ("// ok\n /* foo */ ", value);
// You can't nest comments.
ASSERT_FALSE(JSONReader::Read("/* /* inner */ outer */ [ 1 ]"));
// Not a open comment token.
ASSERT_FALSE(JSONReader::Read("/ * * / [1]"));
}
class JSONFileValueSerializerTest : public testing::Test {
protected:
void SetUp() override { ASSERT_TRUE(temp_dir_.CreateUniqueTempDir()); }
ScopedTempDir temp_dir_;
};
TEST_F(JSONFileValueSerializerTest, Roundtrip) {
FilePath original_file_path;
ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
#if defined(STARBOARD)
original_file_path = original_file_path.Append(FILE_PATH_LITERAL("base"));
original_file_path = original_file_path.Append(FILE_PATH_LITERAL("test"));
original_file_path = original_file_path.Append(FILE_PATH_LITERAL("data"));
#endif
original_file_path = original_file_path.AppendASCII("serializer_test.json");
ASSERT_TRUE(PathExists(original_file_path));
JSONFileValueDeserializer deserializer(original_file_path);
std::unique_ptr<DictionaryValue> root_dict =
DictionaryValue::From(deserializer.Deserialize(nullptr, nullptr));
ASSERT_TRUE(root_dict);
Value* null_value = nullptr;
ASSERT_TRUE(root_dict->Get("null", &null_value));
ASSERT_TRUE(null_value);
ASSERT_TRUE(null_value->is_none());
bool bool_value = false;
ASSERT_TRUE(root_dict->GetBoolean("bool", &bool_value));
ASSERT_TRUE(bool_value);
int int_value = 0;
ASSERT_TRUE(root_dict->GetInteger("int", &int_value));
ASSERT_EQ(42, int_value);
std::string string_value;
ASSERT_TRUE(root_dict->GetString("string", &string_value));
ASSERT_EQ("hello", string_value);
// Now try writing.
const FilePath written_file_path =
temp_dir_.GetPath().AppendASCII("test_output.js");
ASSERT_FALSE(PathExists(written_file_path));
JSONFileValueSerializer serializer(written_file_path);
ASSERT_TRUE(serializer.Serialize(*root_dict));
ASSERT_TRUE(PathExists(written_file_path));
// Now compare file contents.
#if !defined(STARBOARD)
EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
#endif // !defined(STARBOARD)
EXPECT_TRUE(DeleteFile(written_file_path, false));
}
TEST_F(JSONFileValueSerializerTest, RoundtripNested) {
FilePath original_file_path;
ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
#if defined(STARBOARD)
original_file_path = original_file_path.Append(FILE_PATH_LITERAL("base"));
original_file_path = original_file_path.Append(FILE_PATH_LITERAL("test"));
original_file_path = original_file_path.Append(FILE_PATH_LITERAL("data"));
#endif
original_file_path =
original_file_path.AppendASCII("serializer_nested_test.json");
ASSERT_TRUE(PathExists(original_file_path));
JSONFileValueDeserializer deserializer(original_file_path);
std::unique_ptr<Value> root = deserializer.Deserialize(nullptr, nullptr);
ASSERT_TRUE(root);
// Now try writing.
FilePath written_file_path =
temp_dir_.GetPath().AppendASCII("test_output.json");
ASSERT_FALSE(PathExists(written_file_path));
JSONFileValueSerializer serializer(written_file_path);
ASSERT_TRUE(serializer.Serialize(*root));
ASSERT_TRUE(PathExists(written_file_path));
// Now compare file contents.
#if !defined(STARBOARD)
EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
#endif // !defined(STARBOARD)
EXPECT_TRUE(DeleteFile(written_file_path, false));
}
TEST_F(JSONFileValueSerializerTest, NoWhitespace) {
FilePath source_file_path;
ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &source_file_path));
#if defined(STARBOARD)
source_file_path = source_file_path.Append(FILE_PATH_LITERAL("base"));
source_file_path = source_file_path.Append(FILE_PATH_LITERAL("test"));
source_file_path = source_file_path.Append(FILE_PATH_LITERAL("data"));
#endif
source_file_path =
source_file_path.AppendASCII("serializer_test_nowhitespace.json");
ASSERT_TRUE(PathExists(source_file_path));
JSONFileValueDeserializer deserializer(source_file_path);
std::unique_ptr<Value> root = deserializer.Deserialize(nullptr, nullptr);
ASSERT_TRUE(root);
}
} // namespace
} // namespace base