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488 lines
18 KiB
488 lines
18 KiB
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <memory>
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#include <string>
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#include "base/files/file_util.h"
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#include "base/files/scoped_temp_dir.h"
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#include "base/json/json_file_value_serializer.h"
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#include "base/json/json_reader.h"
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#include "base/json/json_string_value_serializer.h"
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#include "base/json/json_writer.h"
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#include "base/path_service.h"
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#include "base/strings/string_piece.h"
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#include "base/strings/string_util.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/values.h"
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#include "build/build_config.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace {
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// Some proper JSON to test with:
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const char kProperJSON[] =
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"{\n"
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" \"compound\": {\n"
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" \"a\": 1,\n"
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" \"b\": 2\n"
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" },\n"
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" \"some_String\": \"1337\",\n"
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" \"some_int\": 42,\n"
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" \"the_list\": [ \"val1\", \"val2\" ]\n"
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"}\n";
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// Some proper JSON with trailing commas:
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const char kProperJSONWithCommas[] =
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"{\n"
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"\t\"some_int\": 42,\n"
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"\t\"some_String\": \"1337\",\n"
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"\t\"the_list\": [\"val1\", \"val2\", ],\n"
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"\t\"compound\": { \"a\": 1, \"b\": 2, },\n"
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"}\n";
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// kProperJSON with a few misc characters at the begin and end.
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const char kProperJSONPadded[] =
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")]}'\n"
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"{\n"
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" \"compound\": {\n"
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" \"a\": 1,\n"
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" \"b\": 2\n"
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" },\n"
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" \"some_String\": \"1337\",\n"
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" \"some_int\": 42,\n"
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" \"the_list\": [ \"val1\", \"val2\" ]\n"
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"}\n"
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"?!ab\n";
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const char kWinLineEnds[] = "\r\n";
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const char kLinuxLineEnds[] = "\n";
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// Verifies the generated JSON against the expected output.
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void CheckJSONIsStillTheSame(const Value& value) {
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// Serialize back the output.
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std::string serialized_json;
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JSONStringValueSerializer str_serializer(&serialized_json);
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str_serializer.set_pretty_print(true);
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ASSERT_TRUE(str_serializer.Serialize(value));
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// Unify line endings between platforms.
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ReplaceSubstringsAfterOffset(&serialized_json, 0,
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kWinLineEnds, kLinuxLineEnds);
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// Now compare the input with the output.
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ASSERT_EQ(kProperJSON, serialized_json);
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}
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void ValidateJsonList(const std::string& json) {
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std::unique_ptr<ListValue> list = ListValue::From(JSONReader::Read(json));
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ASSERT_TRUE(list);
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ASSERT_EQ(1U, list->GetSize());
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Value* elt = nullptr;
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ASSERT_TRUE(list->Get(0, &elt));
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int value = 0;
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ASSERT_TRUE(elt && elt->GetAsInteger(&value));
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ASSERT_EQ(1, value);
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}
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// Test proper JSON deserialization from string is working.
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TEST(JSONValueDeserializerTest, ReadProperJSONFromString) {
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// Try to deserialize it through the serializer.
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JSONStringValueDeserializer str_deserializer(kProperJSON);
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int error_code = 0;
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std::string error_message;
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std::unique_ptr<Value> value =
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str_deserializer.Deserialize(&error_code, &error_message);
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ASSERT_TRUE(value);
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ASSERT_EQ(0, error_code);
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ASSERT_TRUE(error_message.empty());
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// Verify if the same JSON is still there.
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CheckJSONIsStillTheSame(*value);
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}
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// Test proper JSON deserialization from a StringPiece substring.
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TEST(JSONValueDeserializerTest, ReadProperJSONFromStringPiece) {
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// Create a StringPiece for the substring of kProperJSONPadded that matches
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// kProperJSON.
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StringPiece proper_json(kProperJSONPadded);
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proper_json = proper_json.substr(5, proper_json.length() - 10);
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JSONStringValueDeserializer str_deserializer(proper_json);
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int error_code = 0;
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std::string error_message;
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std::unique_ptr<Value> value =
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str_deserializer.Deserialize(&error_code, &error_message);
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ASSERT_TRUE(value);
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ASSERT_EQ(0, error_code);
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ASSERT_TRUE(error_message.empty());
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// Verify if the same JSON is still there.
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CheckJSONIsStillTheSame(*value);
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}
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// Test that trialing commas are only properly deserialized from string when
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// the proper flag for that is set.
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TEST(JSONValueDeserializerTest, ReadJSONWithTrailingCommasFromString) {
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// Try to deserialize it through the serializer.
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JSONStringValueDeserializer str_deserializer(kProperJSONWithCommas);
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int error_code = 0;
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std::string error_message;
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std::unique_ptr<Value> value =
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str_deserializer.Deserialize(&error_code, &error_message);
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ASSERT_FALSE(value);
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ASSERT_NE(0, error_code);
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ASSERT_FALSE(error_message.empty());
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// Repeat with commas allowed.
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JSONStringValueDeserializer str_deserializer2(kProperJSONWithCommas,
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JSON_ALLOW_TRAILING_COMMAS);
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value = str_deserializer2.Deserialize(&error_code, &error_message);
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ASSERT_TRUE(value);
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ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
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// Verify if the same JSON is still there.
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CheckJSONIsStillTheSame(*value);
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}
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// Test proper JSON deserialization from file is working.
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TEST(JSONValueDeserializerTest, ReadProperJSONFromFile) {
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ScopedTempDir tempdir;
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ASSERT_TRUE(tempdir.CreateUniqueTempDir());
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// Write it down in the file.
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FilePath temp_file(tempdir.GetPath().AppendASCII("test.json"));
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ASSERT_EQ(static_cast<int>(strlen(kProperJSON)),
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WriteFile(temp_file, kProperJSON, strlen(kProperJSON)));
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// Try to deserialize it through the serializer.
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JSONFileValueDeserializer file_deserializer(temp_file);
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int error_code = 0;
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std::string error_message;
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std::unique_ptr<Value> value =
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file_deserializer.Deserialize(&error_code, &error_message);
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ASSERT_TRUE(value);
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ASSERT_EQ(0, error_code);
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ASSERT_TRUE(error_message.empty());
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// Verify if the same JSON is still there.
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CheckJSONIsStillTheSame(*value);
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}
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// Test that trialing commas are only properly deserialized from file when
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// the proper flag for that is set.
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TEST(JSONValueDeserializerTest, ReadJSONWithCommasFromFile) {
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ScopedTempDir tempdir;
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ASSERT_TRUE(tempdir.CreateUniqueTempDir());
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// Write it down in the file.
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FilePath temp_file(tempdir.GetPath().AppendASCII("test.json"));
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ASSERT_EQ(static_cast<int>(strlen(kProperJSONWithCommas)),
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WriteFile(temp_file, kProperJSONWithCommas,
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strlen(kProperJSONWithCommas)));
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// Try to deserialize it through the serializer.
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JSONFileValueDeserializer file_deserializer(temp_file);
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// This must fail without the proper flag.
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int error_code = 0;
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std::string error_message;
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std::unique_ptr<Value> value =
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file_deserializer.Deserialize(&error_code, &error_message);
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ASSERT_FALSE(value);
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ASSERT_NE(0, error_code);
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ASSERT_FALSE(error_message.empty());
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// Repeat with commas allowed.
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JSONFileValueDeserializer file_deserializer2(temp_file,
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JSON_ALLOW_TRAILING_COMMAS);
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value = file_deserializer2.Deserialize(&error_code, &error_message);
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ASSERT_TRUE(value);
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ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
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// Verify if the same JSON is still there.
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CheckJSONIsStillTheSame(*value);
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}
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TEST(JSONValueDeserializerTest, AllowTrailingComma) {
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static const char kTestWithCommas[] = "{\"key\": [true,],}";
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static const char kTestNoCommas[] = "{\"key\": [true]}";
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JSONStringValueDeserializer deserializer(kTestWithCommas,
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JSON_ALLOW_TRAILING_COMMAS);
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JSONStringValueDeserializer deserializer_expected(kTestNoCommas);
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std::unique_ptr<Value> root = deserializer.Deserialize(nullptr, nullptr);
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ASSERT_TRUE(root);
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std::unique_ptr<Value> root_expected;
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root_expected = deserializer_expected.Deserialize(nullptr, nullptr);
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ASSERT_TRUE(root_expected);
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ASSERT_TRUE(root->Equals(root_expected.get()));
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}
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TEST(JSONValueSerializerTest, Roundtrip) {
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static const char kOriginalSerialization[] =
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"{\"bool\":true,\"double\":3.14,\"int\":42,\"list\":[1,2],\"null\":null}";
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JSONStringValueDeserializer deserializer(kOriginalSerialization);
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std::unique_ptr<DictionaryValue> root_dict =
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DictionaryValue::From(deserializer.Deserialize(nullptr, nullptr));
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ASSERT_TRUE(root_dict);
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Value* null_value = nullptr;
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ASSERT_TRUE(root_dict->Get("null", &null_value));
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ASSERT_TRUE(null_value);
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ASSERT_TRUE(null_value->is_none());
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bool bool_value = false;
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ASSERT_TRUE(root_dict->GetBoolean("bool", &bool_value));
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ASSERT_TRUE(bool_value);
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int int_value = 0;
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ASSERT_TRUE(root_dict->GetInteger("int", &int_value));
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ASSERT_EQ(42, int_value);
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double double_value = 0.0;
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ASSERT_TRUE(root_dict->GetDouble("double", &double_value));
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ASSERT_DOUBLE_EQ(3.14, double_value);
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std::string test_serialization;
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JSONStringValueSerializer mutable_serializer(&test_serialization);
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ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
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ASSERT_EQ(kOriginalSerialization, test_serialization);
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mutable_serializer.set_pretty_print(true);
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ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
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// JSON output uses a different newline style on Windows than on other
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// platforms.
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#if defined(OS_WIN)
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#define JSON_NEWLINE "\r\n"
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#else
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#define JSON_NEWLINE "\n"
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#endif
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const std::string pretty_serialization =
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"{" JSON_NEWLINE
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" \"bool\": true," JSON_NEWLINE
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" \"double\": 3.14," JSON_NEWLINE
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" \"int\": 42," JSON_NEWLINE
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" \"list\": [ 1, 2 ]," JSON_NEWLINE
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" \"null\": null" JSON_NEWLINE
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"}" JSON_NEWLINE;
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#undef JSON_NEWLINE
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ASSERT_EQ(pretty_serialization, test_serialization);
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}
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TEST(JSONValueSerializerTest, StringEscape) {
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string16 all_chars;
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for (int i = 1; i < 256; ++i) {
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all_chars += static_cast<char16>(i);
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}
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// Generated in in Firefox using the following js (with an extra backslash for
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// double quote):
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// var s = '';
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// for (var i = 1; i < 256; ++i) { s += String.fromCharCode(i); }
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// uneval(s).replace(/\\/g, "\\\\");
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std::string all_chars_expected =
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"\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007\\b\\t\\n\\u000B\\f\\r"
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"\\u000E\\u000F\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017"
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"\\u0018\\u0019\\u001A\\u001B\\u001C\\u001D\\u001E\\u001F !\\\"#$%&'()*+,"
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"-./0123456789:;\\u003C=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_`abcde"
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"fghijklmnopqrstuvwxyz{|}~\x7F\xC2\x80\xC2\x81\xC2\x82\xC2\x83\xC2\x84"
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"\xC2\x85\xC2\x86\xC2\x87\xC2\x88\xC2\x89\xC2\x8A\xC2\x8B\xC2\x8C\xC2\x8D"
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"\xC2\x8E\xC2\x8F\xC2\x90\xC2\x91\xC2\x92\xC2\x93\xC2\x94\xC2\x95\xC2\x96"
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"\xC2\x97\xC2\x98\xC2\x99\xC2\x9A\xC2\x9B\xC2\x9C\xC2\x9D\xC2\x9E\xC2\x9F"
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"\xC2\xA0\xC2\xA1\xC2\xA2\xC2\xA3\xC2\xA4\xC2\xA5\xC2\xA6\xC2\xA7\xC2\xA8"
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"\xC2\xA9\xC2\xAA\xC2\xAB\xC2\xAC\xC2\xAD\xC2\xAE\xC2\xAF\xC2\xB0\xC2\xB1"
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"\xC2\xB2\xC2\xB3\xC2\xB4\xC2\xB5\xC2\xB6\xC2\xB7\xC2\xB8\xC2\xB9\xC2\xBA"
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"\xC2\xBB\xC2\xBC\xC2\xBD\xC2\xBE\xC2\xBF\xC3\x80\xC3\x81\xC3\x82\xC3\x83"
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"\xC3\x84\xC3\x85\xC3\x86\xC3\x87\xC3\x88\xC3\x89\xC3\x8A\xC3\x8B\xC3\x8C"
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"\xC3\x8D\xC3\x8E\xC3\x8F\xC3\x90\xC3\x91\xC3\x92\xC3\x93\xC3\x94\xC3\x95"
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"\xC3\x96\xC3\x97\xC3\x98\xC3\x99\xC3\x9A\xC3\x9B\xC3\x9C\xC3\x9D\xC3\x9E"
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"\xC3\x9F\xC3\xA0\xC3\xA1\xC3\xA2\xC3\xA3\xC3\xA4\xC3\xA5\xC3\xA6\xC3\xA7"
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"\xC3\xA8\xC3\xA9\xC3\xAA\xC3\xAB\xC3\xAC\xC3\xAD\xC3\xAE\xC3\xAF\xC3\xB0"
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"\xC3\xB1\xC3\xB2\xC3\xB3\xC3\xB4\xC3\xB5\xC3\xB6\xC3\xB7\xC3\xB8\xC3\xB9"
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"\xC3\xBA\xC3\xBB\xC3\xBC\xC3\xBD\xC3\xBE\xC3\xBF";
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std::string expected_output = "{\"all_chars\":\"" + all_chars_expected +
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"\"}";
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// Test JSONWriter interface
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std::string output_js;
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DictionaryValue valueRoot;
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valueRoot.SetString("all_chars", all_chars);
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JSONWriter::Write(valueRoot, &output_js);
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ASSERT_EQ(expected_output, output_js);
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// Test JSONValueSerializer interface (uses JSONWriter).
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JSONStringValueSerializer serializer(&output_js);
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ASSERT_TRUE(serializer.Serialize(valueRoot));
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ASSERT_EQ(expected_output, output_js);
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}
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TEST(JSONValueSerializerTest, UnicodeStrings) {
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// unicode string json -> escaped ascii text
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DictionaryValue root;
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string16 test(WideToUTF16(L"\x7F51\x9875"));
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root.SetString("web", test);
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static const char kExpected[] = "{\"web\":\"\xE7\xBD\x91\xE9\xA1\xB5\"}";
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std::string actual;
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JSONStringValueSerializer serializer(&actual);
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ASSERT_TRUE(serializer.Serialize(root));
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ASSERT_EQ(kExpected, actual);
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// escaped ascii text -> json
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JSONStringValueDeserializer deserializer(kExpected);
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std::unique_ptr<Value> deserial_root =
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deserializer.Deserialize(nullptr, nullptr);
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ASSERT_TRUE(deserial_root);
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DictionaryValue* dict_root =
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static_cast<DictionaryValue*>(deserial_root.get());
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string16 web_value;
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ASSERT_TRUE(dict_root->GetString("web", &web_value));
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ASSERT_EQ(test, web_value);
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}
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TEST(JSONValueSerializerTest, HexStrings) {
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// hex string json -> escaped ascii text
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DictionaryValue root;
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string16 test(WideToUTF16(L"\x01\x02"));
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root.SetString("test", test);
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static const char kExpected[] = "{\"test\":\"\\u0001\\u0002\"}";
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std::string actual;
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JSONStringValueSerializer serializer(&actual);
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ASSERT_TRUE(serializer.Serialize(root));
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ASSERT_EQ(kExpected, actual);
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// escaped ascii text -> json
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JSONStringValueDeserializer deserializer(kExpected);
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std::unique_ptr<Value> deserial_root =
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deserializer.Deserialize(nullptr, nullptr);
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ASSERT_TRUE(deserial_root);
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DictionaryValue* dict_root =
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static_cast<DictionaryValue*>(deserial_root.get());
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string16 test_value;
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ASSERT_TRUE(dict_root->GetString("test", &test_value));
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ASSERT_EQ(test, test_value);
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// Test converting escaped regular chars
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static const char kEscapedChars[] = "{\"test\":\"\\u0067\\u006f\"}";
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JSONStringValueDeserializer deserializer2(kEscapedChars);
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deserial_root = deserializer2.Deserialize(nullptr, nullptr);
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ASSERT_TRUE(deserial_root);
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dict_root = static_cast<DictionaryValue*>(deserial_root.get());
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ASSERT_TRUE(dict_root->GetString("test", &test_value));
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ASSERT_EQ(ASCIIToUTF16("go"), test_value);
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}
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TEST(JSONValueSerializerTest, JSONReaderComments) {
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ValidateJsonList("[ // 2, 3, ignore me ] \n1 ]");
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ValidateJsonList("[ /* 2, \n3, ignore me ]*/ \n1 ]");
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ValidateJsonList("//header\n[ // 2, \n// 3, \n1 ]// footer");
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ValidateJsonList("/*\n[ // 2, \n// 3, \n1 ]*/[1]");
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ValidateJsonList("[ 1 /* one */ ] /* end */");
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ValidateJsonList("[ 1 //// ,2\r\n ]");
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// It's ok to have a comment in a string.
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std::unique_ptr<ListValue> list =
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ListValue::From(JSONReader::Read("[\"// ok\\n /* foo */ \"]"));
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ASSERT_TRUE(list);
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ASSERT_EQ(1U, list->GetSize());
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Value* elt = nullptr;
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ASSERT_TRUE(list->Get(0, &elt));
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std::string value;
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ASSERT_TRUE(elt && elt->GetAsString(&value));
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ASSERT_EQ("// ok\n /* foo */ ", value);
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// You can't nest comments.
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ASSERT_FALSE(JSONReader::Read("/* /* inner */ outer */ [ 1 ]"));
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// Not a open comment token.
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ASSERT_FALSE(JSONReader::Read("/ * * / [1]"));
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}
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class JSONFileValueSerializerTest : public testing::Test {
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protected:
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void SetUp() override { ASSERT_TRUE(temp_dir_.CreateUniqueTempDir()); }
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ScopedTempDir temp_dir_;
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};
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TEST_F(JSONFileValueSerializerTest, DISABLED_Roundtrip) {
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FilePath original_file_path;
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ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
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original_file_path = original_file_path.AppendASCII("serializer_test.json");
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ASSERT_TRUE(PathExists(original_file_path));
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JSONFileValueDeserializer deserializer(original_file_path);
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std::unique_ptr<DictionaryValue> root_dict =
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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.
|
|
EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
|
|
EXPECT_TRUE(DeleteFile(written_file_path, false));
|
|
}
|
|
|
|
TEST_F(JSONFileValueSerializerTest, DISABLED_RoundtripNested) {
|
|
FilePath original_file_path;
|
|
ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
|
|
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.
|
|
EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
|
|
EXPECT_TRUE(DeleteFile(written_file_path, false));
|
|
}
|
|
|
|
TEST_F(JSONFileValueSerializerTest, DISABLED_NoWhitespace) {
|
|
FilePath source_file_path;
|
|
ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &source_file_path));
|
|
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
|