1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include <memory>
6 #include <string>
7 
8 #include "base/files/file_util.h"
9 #include "base/files/scoped_temp_dir.h"
10 #include "base/json/json_file_value_serializer.h"
11 #include "base/json/json_reader.h"
12 #include "base/json/json_string_value_serializer.h"
13 #include "base/json/json_writer.h"
14 #include "base/path_service.h"
15 #include "base/strings/string_piece.h"
16 #include "base/strings/string_util.h"
17 #include "base/strings/utf_string_conversions.h"
18 #include "base/values.h"
19 #include "build/build_config.h"
20 #include "testing/gtest/include/gtest/gtest.h"
21 
22 namespace base {
23 
24 namespace {
25 
26 // Some proper JSON to test with:
27 const char kProperJSON[] =
28     "{\n"
29     "   \"compound\": {\n"
30     "      \"a\": 1,\n"
31     "      \"b\": 2\n"
32     "   },\n"
33     "   \"some_String\": \"1337\",\n"
34     "   \"some_int\": 42,\n"
35     "   \"the_list\": [ \"val1\", \"val2\" ]\n"
36     "}\n";
37 
38 // Some proper JSON with trailing commas:
39 const char kProperJSONWithCommas[] =
40     "{\n"
41     "\t\"some_int\": 42,\n"
42     "\t\"some_String\": \"1337\",\n"
43     "\t\"the_list\": [\"val1\", \"val2\", ],\n"
44     "\t\"compound\": { \"a\": 1, \"b\": 2, },\n"
45     "}\n";
46 
47 // kProperJSON with a few misc characters at the begin and end.
48 const char kProperJSONPadded[] =
49     ")]}'\n"
50     "{\n"
51     "   \"compound\": {\n"
52     "      \"a\": 1,\n"
53     "      \"b\": 2\n"
54     "   },\n"
55     "   \"some_String\": \"1337\",\n"
56     "   \"some_int\": 42,\n"
57     "   \"the_list\": [ \"val1\", \"val2\" ]\n"
58     "}\n"
59     "?!ab\n";
60 
61 const char kWinLineEnds[] = "\r\n";
62 const char kLinuxLineEnds[] = "\n";
63 
64 // Verifies the generated JSON against the expected output.
CheckJSONIsStillTheSame(const Value & value)65 void CheckJSONIsStillTheSame(const Value& value) {
66   // Serialize back the output.
67   std::string serialized_json;
68   JSONStringValueSerializer str_serializer(&serialized_json);
69   str_serializer.set_pretty_print(true);
70   ASSERT_TRUE(str_serializer.Serialize(value));
71   // Unify line endings between platforms.
72   ReplaceSubstringsAfterOffset(&serialized_json, 0,
73                                kWinLineEnds, kLinuxLineEnds);
74   // Now compare the input with the output.
75   ASSERT_EQ(kProperJSON, serialized_json);
76 }
77 
ValidateJsonList(const std::string & json)78 void ValidateJsonList(const std::string& json) {
79   std::unique_ptr<ListValue> list = ListValue::From(JSONReader::Read(json));
80   ASSERT_TRUE(list);
81   ASSERT_EQ(1U, list->GetSize());
82   Value* elt = nullptr;
83   ASSERT_TRUE(list->Get(0, &elt));
84   int value = 0;
85   ASSERT_TRUE(elt && elt->GetAsInteger(&value));
86   ASSERT_EQ(1, value);
87 }
88 
89 // Test proper JSON deserialization from string is working.
TEST(JSONValueDeserializerTest,ReadProperJSONFromString)90 TEST(JSONValueDeserializerTest, ReadProperJSONFromString) {
91   // Try to deserialize it through the serializer.
92   JSONStringValueDeserializer str_deserializer(kProperJSON);
93 
94   int error_code = 0;
95   std::string error_message;
96   std::unique_ptr<Value> value =
97       str_deserializer.Deserialize(&error_code, &error_message);
98   ASSERT_TRUE(value);
99   ASSERT_EQ(0, error_code);
100   ASSERT_TRUE(error_message.empty());
101   // Verify if the same JSON is still there.
102   CheckJSONIsStillTheSame(*value);
103 }
104 
105 // Test proper JSON deserialization from a StringPiece substring.
TEST(JSONValueDeserializerTest,ReadProperJSONFromStringPiece)106 TEST(JSONValueDeserializerTest, ReadProperJSONFromStringPiece) {
107   // Create a StringPiece for the substring of kProperJSONPadded that matches
108   // kProperJSON.
109   StringPiece proper_json(kProperJSONPadded);
110   proper_json = proper_json.substr(5, proper_json.length() - 10);
111   JSONStringValueDeserializer str_deserializer(proper_json);
112 
113   int error_code = 0;
114   std::string error_message;
115   std::unique_ptr<Value> value =
116       str_deserializer.Deserialize(&error_code, &error_message);
117   ASSERT_TRUE(value);
118   ASSERT_EQ(0, error_code);
119   ASSERT_TRUE(error_message.empty());
120   // Verify if the same JSON is still there.
121   CheckJSONIsStillTheSame(*value);
122 }
123 
124 // Test that trialing commas are only properly deserialized from string when
125 // the proper flag for that is set.
TEST(JSONValueDeserializerTest,ReadJSONWithTrailingCommasFromString)126 TEST(JSONValueDeserializerTest, ReadJSONWithTrailingCommasFromString) {
127   // Try to deserialize it through the serializer.
128   JSONStringValueDeserializer str_deserializer(kProperJSONWithCommas);
129 
130   int error_code = 0;
131   std::string error_message;
132   std::unique_ptr<Value> value =
133       str_deserializer.Deserialize(&error_code, &error_message);
134   ASSERT_FALSE(value);
135   ASSERT_NE(0, error_code);
136   ASSERT_FALSE(error_message.empty());
137   // Repeat with commas allowed.
138   JSONStringValueDeserializer str_deserializer2(kProperJSONWithCommas,
139                                                 JSON_ALLOW_TRAILING_COMMAS);
140   value = str_deserializer2.Deserialize(&error_code, &error_message);
141   ASSERT_TRUE(value);
142   ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
143   // Verify if the same JSON is still there.
144   CheckJSONIsStillTheSame(*value);
145 }
146 
147 // Test proper JSON deserialization from file is working.
TEST(JSONValueDeserializerTest,ReadProperJSONFromFile)148 TEST(JSONValueDeserializerTest, ReadProperJSONFromFile) {
149   ScopedTempDir tempdir;
150   ASSERT_TRUE(tempdir.CreateUniqueTempDir());
151   // Write it down in the file.
152   FilePath temp_file(tempdir.GetPath().AppendASCII("test.json"));
153   ASSERT_EQ(static_cast<int>(strlen(kProperJSON)),
154             WriteFile(temp_file, kProperJSON, strlen(kProperJSON)));
155 
156   // Try to deserialize it through the serializer.
157   JSONFileValueDeserializer file_deserializer(temp_file);
158 
159   int error_code = 0;
160   std::string error_message;
161   std::unique_ptr<Value> value =
162       file_deserializer.Deserialize(&error_code, &error_message);
163   ASSERT_TRUE(value);
164   ASSERT_EQ(0, error_code);
165   ASSERT_TRUE(error_message.empty());
166   // Verify if the same JSON is still there.
167   CheckJSONIsStillTheSame(*value);
168 }
169 
170 // Test that trialing commas are only properly deserialized from file when
171 // the proper flag for that is set.
TEST(JSONValueDeserializerTest,ReadJSONWithCommasFromFile)172 TEST(JSONValueDeserializerTest, ReadJSONWithCommasFromFile) {
173   ScopedTempDir tempdir;
174   ASSERT_TRUE(tempdir.CreateUniqueTempDir());
175   // Write it down in the file.
176   FilePath temp_file(tempdir.GetPath().AppendASCII("test.json"));
177   ASSERT_EQ(static_cast<int>(strlen(kProperJSONWithCommas)),
178             WriteFile(temp_file, kProperJSONWithCommas,
179                       strlen(kProperJSONWithCommas)));
180 
181   // Try to deserialize it through the serializer.
182   JSONFileValueDeserializer file_deserializer(temp_file);
183   // This must fail without the proper flag.
184   int error_code = 0;
185   std::string error_message;
186   std::unique_ptr<Value> value =
187       file_deserializer.Deserialize(&error_code, &error_message);
188   ASSERT_FALSE(value);
189   ASSERT_NE(0, error_code);
190   ASSERT_FALSE(error_message.empty());
191   // Repeat with commas allowed.
192   JSONFileValueDeserializer file_deserializer2(temp_file,
193                                                JSON_ALLOW_TRAILING_COMMAS);
194   value = file_deserializer2.Deserialize(&error_code, &error_message);
195   ASSERT_TRUE(value);
196   ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
197   // Verify if the same JSON is still there.
198   CheckJSONIsStillTheSame(*value);
199 }
200 
TEST(JSONValueDeserializerTest,AllowTrailingComma)201 TEST(JSONValueDeserializerTest, AllowTrailingComma) {
202   static const char kTestWithCommas[] = "{\"key\": [true,],}";
203   static const char kTestNoCommas[] = "{\"key\": [true]}";
204 
205   JSONStringValueDeserializer deserializer(kTestWithCommas,
206                                            JSON_ALLOW_TRAILING_COMMAS);
207   JSONStringValueDeserializer deserializer_expected(kTestNoCommas);
208   std::unique_ptr<Value> root = deserializer.Deserialize(nullptr, nullptr);
209   ASSERT_TRUE(root);
210   std::unique_ptr<Value> root_expected;
211   root_expected = deserializer_expected.Deserialize(nullptr, nullptr);
212   ASSERT_TRUE(root_expected);
213   ASSERT_TRUE(root->Equals(root_expected.get()));
214 }
215 
TEST(JSONValueSerializerTest,Roundtrip)216 TEST(JSONValueSerializerTest, Roundtrip) {
217   static const char kOriginalSerialization[] =
218     "{\"bool\":true,\"double\":3.14,\"int\":42,\"list\":[1,2],\"null\":null}";
219   JSONStringValueDeserializer deserializer(kOriginalSerialization);
220   std::unique_ptr<DictionaryValue> root_dict =
221       DictionaryValue::From(deserializer.Deserialize(nullptr, nullptr));
222   ASSERT_TRUE(root_dict);
223 
224   Value* null_value = nullptr;
225   ASSERT_TRUE(root_dict->Get("null", &null_value));
226   ASSERT_TRUE(null_value);
227   ASSERT_TRUE(null_value->is_none());
228 
229   bool bool_value = false;
230   ASSERT_TRUE(root_dict->GetBoolean("bool", &bool_value));
231   ASSERT_TRUE(bool_value);
232 
233   int int_value = 0;
234   ASSERT_TRUE(root_dict->GetInteger("int", &int_value));
235   ASSERT_EQ(42, int_value);
236 
237   double double_value = 0.0;
238   ASSERT_TRUE(root_dict->GetDouble("double", &double_value));
239   ASSERT_DOUBLE_EQ(3.14, double_value);
240 
241   std::string test_serialization;
242   JSONStringValueSerializer mutable_serializer(&test_serialization);
243   ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
244   ASSERT_EQ(kOriginalSerialization, test_serialization);
245 
246   mutable_serializer.set_pretty_print(true);
247   ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
248   // JSON output uses a different newline style on Windows than on other
249   // platforms.
250 #if defined(OS_WIN)
251 #define JSON_NEWLINE "\r\n"
252 #else
253 #define JSON_NEWLINE "\n"
254 #endif
255   const std::string pretty_serialization =
256     "{" JSON_NEWLINE
257     "   \"bool\": true," JSON_NEWLINE
258     "   \"double\": 3.14," JSON_NEWLINE
259     "   \"int\": 42," JSON_NEWLINE
260     "   \"list\": [ 1, 2 ]," JSON_NEWLINE
261     "   \"null\": null" JSON_NEWLINE
262     "}" JSON_NEWLINE;
263 #undef JSON_NEWLINE
264   ASSERT_EQ(pretty_serialization, test_serialization);
265 }
266 
TEST(JSONValueSerializerTest,StringEscape)267 TEST(JSONValueSerializerTest, StringEscape) {
268   string16 all_chars;
269   for (int i = 1; i < 256; ++i) {
270     all_chars += static_cast<char16>(i);
271   }
272   // Generated in in Firefox using the following js (with an extra backslash for
273   // double quote):
274   // var s = '';
275   // for (var i = 1; i < 256; ++i) { s += String.fromCharCode(i); }
276   // uneval(s).replace(/\\/g, "\\\\");
277   std::string all_chars_expected =
278       "\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007\\b\\t\\n\\u000B\\f\\r"
279       "\\u000E\\u000F\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017"
280       "\\u0018\\u0019\\u001A\\u001B\\u001C\\u001D\\u001E\\u001F !\\\"#$%&'()*+,"
281       "-./0123456789:;\\u003C=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_`abcde"
282       "fghijklmnopqrstuvwxyz{|}~\x7F\xC2\x80\xC2\x81\xC2\x82\xC2\x83\xC2\x84"
283       "\xC2\x85\xC2\x86\xC2\x87\xC2\x88\xC2\x89\xC2\x8A\xC2\x8B\xC2\x8C\xC2\x8D"
284       "\xC2\x8E\xC2\x8F\xC2\x90\xC2\x91\xC2\x92\xC2\x93\xC2\x94\xC2\x95\xC2\x96"
285       "\xC2\x97\xC2\x98\xC2\x99\xC2\x9A\xC2\x9B\xC2\x9C\xC2\x9D\xC2\x9E\xC2\x9F"
286       "\xC2\xA0\xC2\xA1\xC2\xA2\xC2\xA3\xC2\xA4\xC2\xA5\xC2\xA6\xC2\xA7\xC2\xA8"
287       "\xC2\xA9\xC2\xAA\xC2\xAB\xC2\xAC\xC2\xAD\xC2\xAE\xC2\xAF\xC2\xB0\xC2\xB1"
288       "\xC2\xB2\xC2\xB3\xC2\xB4\xC2\xB5\xC2\xB6\xC2\xB7\xC2\xB8\xC2\xB9\xC2\xBA"
289       "\xC2\xBB\xC2\xBC\xC2\xBD\xC2\xBE\xC2\xBF\xC3\x80\xC3\x81\xC3\x82\xC3\x83"
290       "\xC3\x84\xC3\x85\xC3\x86\xC3\x87\xC3\x88\xC3\x89\xC3\x8A\xC3\x8B\xC3\x8C"
291       "\xC3\x8D\xC3\x8E\xC3\x8F\xC3\x90\xC3\x91\xC3\x92\xC3\x93\xC3\x94\xC3\x95"
292       "\xC3\x96\xC3\x97\xC3\x98\xC3\x99\xC3\x9A\xC3\x9B\xC3\x9C\xC3\x9D\xC3\x9E"
293       "\xC3\x9F\xC3\xA0\xC3\xA1\xC3\xA2\xC3\xA3\xC3\xA4\xC3\xA5\xC3\xA6\xC3\xA7"
294       "\xC3\xA8\xC3\xA9\xC3\xAA\xC3\xAB\xC3\xAC\xC3\xAD\xC3\xAE\xC3\xAF\xC3\xB0"
295       "\xC3\xB1\xC3\xB2\xC3\xB3\xC3\xB4\xC3\xB5\xC3\xB6\xC3\xB7\xC3\xB8\xC3\xB9"
296       "\xC3\xBA\xC3\xBB\xC3\xBC\xC3\xBD\xC3\xBE\xC3\xBF";
297 
298   std::string expected_output = "{\"all_chars\":\"" + all_chars_expected +
299                                  "\"}";
300   // Test JSONWriter interface
301   std::string output_js;
302   DictionaryValue valueRoot;
303   valueRoot.SetString("all_chars", all_chars);
304   JSONWriter::Write(valueRoot, &output_js);
305   ASSERT_EQ(expected_output, output_js);
306 
307   // Test JSONValueSerializer interface (uses JSONWriter).
308   JSONStringValueSerializer serializer(&output_js);
309   ASSERT_TRUE(serializer.Serialize(valueRoot));
310   ASSERT_EQ(expected_output, output_js);
311 }
312 
TEST(JSONValueSerializerTest,UnicodeStrings)313 TEST(JSONValueSerializerTest, UnicodeStrings) {
314   // unicode string json -> escaped ascii text
315   DictionaryValue root;
316   string16 test(WideToUTF16(L"\x7F51\x9875"));
317   root.SetString("web", test);
318 
319   static const char kExpected[] = "{\"web\":\"\xE7\xBD\x91\xE9\xA1\xB5\"}";
320 
321   std::string actual;
322   JSONStringValueSerializer serializer(&actual);
323   ASSERT_TRUE(serializer.Serialize(root));
324   ASSERT_EQ(kExpected, actual);
325 
326   // escaped ascii text -> json
327   JSONStringValueDeserializer deserializer(kExpected);
328   std::unique_ptr<Value> deserial_root =
329       deserializer.Deserialize(nullptr, nullptr);
330   ASSERT_TRUE(deserial_root);
331   DictionaryValue* dict_root =
332       static_cast<DictionaryValue*>(deserial_root.get());
333   string16 web_value;
334   ASSERT_TRUE(dict_root->GetString("web", &web_value));
335   ASSERT_EQ(test, web_value);
336 }
337 
TEST(JSONValueSerializerTest,HexStrings)338 TEST(JSONValueSerializerTest, HexStrings) {
339   // hex string json -> escaped ascii text
340   DictionaryValue root;
341   string16 test(WideToUTF16(L"\x01\x02"));
342   root.SetString("test", test);
343 
344   static const char kExpected[] = "{\"test\":\"\\u0001\\u0002\"}";
345 
346   std::string actual;
347   JSONStringValueSerializer serializer(&actual);
348   ASSERT_TRUE(serializer.Serialize(root));
349   ASSERT_EQ(kExpected, actual);
350 
351   // escaped ascii text -> json
352   JSONStringValueDeserializer deserializer(kExpected);
353   std::unique_ptr<Value> deserial_root =
354       deserializer.Deserialize(nullptr, nullptr);
355   ASSERT_TRUE(deserial_root);
356   DictionaryValue* dict_root =
357       static_cast<DictionaryValue*>(deserial_root.get());
358   string16 test_value;
359   ASSERT_TRUE(dict_root->GetString("test", &test_value));
360   ASSERT_EQ(test, test_value);
361 
362   // Test converting escaped regular chars
363   static const char kEscapedChars[] = "{\"test\":\"\\u0067\\u006f\"}";
364   JSONStringValueDeserializer deserializer2(kEscapedChars);
365   deserial_root = deserializer2.Deserialize(nullptr, nullptr);
366   ASSERT_TRUE(deserial_root);
367   dict_root = static_cast<DictionaryValue*>(deserial_root.get());
368   ASSERT_TRUE(dict_root->GetString("test", &test_value));
369   ASSERT_EQ(ASCIIToUTF16("go"), test_value);
370 }
371 
TEST(JSONValueSerializerTest,JSONReaderComments)372 TEST(JSONValueSerializerTest, JSONReaderComments) {
373   ValidateJsonList("[ // 2, 3, ignore me ] \n1 ]");
374   ValidateJsonList("[ /* 2, \n3, ignore me ]*/ \n1 ]");
375   ValidateJsonList("//header\n[ // 2, \n// 3, \n1 ]// footer");
376   ValidateJsonList("/*\n[ // 2, \n// 3, \n1 ]*/[1]");
377   ValidateJsonList("[ 1 /* one */ ] /* end */");
378   ValidateJsonList("[ 1 //// ,2\r\n ]");
379 
380   // It's ok to have a comment in a string.
381   std::unique_ptr<ListValue> list =
382       ListValue::From(JSONReader::Read("[\"// ok\\n /* foo */ \"]"));
383   ASSERT_TRUE(list);
384   ASSERT_EQ(1U, list->GetSize());
385   Value* elt = nullptr;
386   ASSERT_TRUE(list->Get(0, &elt));
387   std::string value;
388   ASSERT_TRUE(elt && elt->GetAsString(&value));
389   ASSERT_EQ("// ok\n /* foo */ ", value);
390 
391   // You can't nest comments.
392   ASSERT_FALSE(JSONReader::Read("/* /* inner */ outer */ [ 1 ]"));
393 
394   // Not a open comment token.
395   ASSERT_FALSE(JSONReader::Read("/ * * / [1]"));
396 }
397 
398 class JSONFileValueSerializerTest : public testing::Test {
399  protected:
SetUp()400   void SetUp() override { ASSERT_TRUE(temp_dir_.CreateUniqueTempDir()); }
401 
402   ScopedTempDir temp_dir_;
403 };
404 
TEST_F(JSONFileValueSerializerTest,DISABLED_Roundtrip)405 TEST_F(JSONFileValueSerializerTest, DISABLED_Roundtrip) {
406   FilePath original_file_path;
407   ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
408   original_file_path = original_file_path.AppendASCII("serializer_test.json");
409 
410   ASSERT_TRUE(PathExists(original_file_path));
411 
412   JSONFileValueDeserializer deserializer(original_file_path);
413   std::unique_ptr<DictionaryValue> root_dict =
414       DictionaryValue::From(deserializer.Deserialize(nullptr, nullptr));
415   ASSERT_TRUE(root_dict);
416 
417   Value* null_value = nullptr;
418   ASSERT_TRUE(root_dict->Get("null", &null_value));
419   ASSERT_TRUE(null_value);
420   ASSERT_TRUE(null_value->is_none());
421 
422   bool bool_value = false;
423   ASSERT_TRUE(root_dict->GetBoolean("bool", &bool_value));
424   ASSERT_TRUE(bool_value);
425 
426   int int_value = 0;
427   ASSERT_TRUE(root_dict->GetInteger("int", &int_value));
428   ASSERT_EQ(42, int_value);
429 
430   std::string string_value;
431   ASSERT_TRUE(root_dict->GetString("string", &string_value));
432   ASSERT_EQ("hello", string_value);
433 
434   // Now try writing.
435   const FilePath written_file_path =
436       temp_dir_.GetPath().AppendASCII("test_output.js");
437 
438   ASSERT_FALSE(PathExists(written_file_path));
439   JSONFileValueSerializer serializer(written_file_path);
440   ASSERT_TRUE(serializer.Serialize(*root_dict));
441   ASSERT_TRUE(PathExists(written_file_path));
442 
443   // Now compare file contents.
444   EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
445   EXPECT_TRUE(DeleteFile(written_file_path, false));
446 }
447 
TEST_F(JSONFileValueSerializerTest,DISABLED_RoundtripNested)448 TEST_F(JSONFileValueSerializerTest, DISABLED_RoundtripNested) {
449   FilePath original_file_path;
450   ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
451   original_file_path =
452       original_file_path.AppendASCII("serializer_nested_test.json");
453 
454   ASSERT_TRUE(PathExists(original_file_path));
455 
456   JSONFileValueDeserializer deserializer(original_file_path);
457   std::unique_ptr<Value> root = deserializer.Deserialize(nullptr, nullptr);
458   ASSERT_TRUE(root);
459 
460   // Now try writing.
461   FilePath written_file_path =
462       temp_dir_.GetPath().AppendASCII("test_output.json");
463 
464   ASSERT_FALSE(PathExists(written_file_path));
465   JSONFileValueSerializer serializer(written_file_path);
466   ASSERT_TRUE(serializer.Serialize(*root));
467   ASSERT_TRUE(PathExists(written_file_path));
468 
469   // Now compare file contents.
470   EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
471   EXPECT_TRUE(DeleteFile(written_file_path, false));
472 }
473 
TEST_F(JSONFileValueSerializerTest,DISABLED_NoWhitespace)474 TEST_F(JSONFileValueSerializerTest, DISABLED_NoWhitespace) {
475   FilePath source_file_path;
476   ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &source_file_path));
477   source_file_path =
478       source_file_path.AppendASCII("serializer_test_nowhitespace.json");
479   ASSERT_TRUE(PathExists(source_file_path));
480   JSONFileValueDeserializer deserializer(source_file_path);
481   std::unique_ptr<Value> root = deserializer.Deserialize(nullptr, nullptr);
482   ASSERT_TRUE(root);
483 }
484 
485 }  // namespace
486 
487 }  // namespace base
488