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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 #if !defined(__ANDROID__) && !defined(__ANDROID_HOST__)
15 #include "base/path_service.h"
16 #endif
17 #include "base/strings/string_piece.h"
18 #include "base/strings/string_util.h"
19 #include "base/strings/utf_string_conversions.h"
20 #include "base/values.h"
21 #include "build/build_config.h"
22 #include "testing/gtest/include/gtest/gtest.h"
23 
24 namespace base {
25 
26 namespace {
27 
28 // Some proper JSON to test with:
29 const char kProperJSON[] =
30     "{\n"
31     "   \"compound\": {\n"
32     "      \"a\": 1,\n"
33     "      \"b\": 2\n"
34     "   },\n"
35     "   \"some_String\": \"1337\",\n"
36     "   \"some_int\": 42,\n"
37     "   \"the_list\": [ \"val1\", \"val2\" ]\n"
38     "}\n";
39 
40 // Some proper JSON with trailing commas:
41 const char kProperJSONWithCommas[] =
42     "{\n"
43     "\t\"some_int\": 42,\n"
44     "\t\"some_String\": \"1337\",\n"
45     "\t\"the_list\": [\"val1\", \"val2\", ],\n"
46     "\t\"compound\": { \"a\": 1, \"b\": 2, },\n"
47     "}\n";
48 
49 // kProperJSON with a few misc characters at the begin and end.
50 const char kProperJSONPadded[] =
51     ")]}'\n"
52     "{\n"
53     "   \"compound\": {\n"
54     "      \"a\": 1,\n"
55     "      \"b\": 2\n"
56     "   },\n"
57     "   \"some_String\": \"1337\",\n"
58     "   \"some_int\": 42,\n"
59     "   \"the_list\": [ \"val1\", \"val2\" ]\n"
60     "}\n"
61     "?!ab\n";
62 
63 const char kWinLineEnds[] = "\r\n";
64 const char kLinuxLineEnds[] = "\n";
65 
66 // Verifies the generated JSON against the expected output.
CheckJSONIsStillTheSame(const Value & value)67 void CheckJSONIsStillTheSame(const Value& value) {
68   // Serialize back the output.
69   std::string serialized_json;
70   JSONStringValueSerializer str_serializer(&serialized_json);
71   str_serializer.set_pretty_print(true);
72   ASSERT_TRUE(str_serializer.Serialize(value));
73   // Unify line endings between platforms.
74   ReplaceSubstringsAfterOffset(&serialized_json, 0,
75                                kWinLineEnds, kLinuxLineEnds);
76   // Now compare the input with the output.
77   ASSERT_EQ(kProperJSON, serialized_json);
78 }
79 
ValidateJsonList(const std::string & json)80 void ValidateJsonList(const std::string& json) {
81   std::unique_ptr<Value> root = JSONReader::Read(json);
82   ASSERT_TRUE(root.get() && root->IsType(Value::TYPE_LIST));
83   ListValue* list = static_cast<ListValue*>(root.get());
84   ASSERT_EQ(1U, list->GetSize());
85   Value* elt = NULL;
86   ASSERT_TRUE(list->Get(0, &elt));
87   int value = 0;
88   ASSERT_TRUE(elt && elt->GetAsInteger(&value));
89   ASSERT_EQ(1, value);
90 }
91 
92 // Test proper JSON deserialization from string is working.
TEST(JSONValueDeserializerTest,ReadProperJSONFromString)93 TEST(JSONValueDeserializerTest, ReadProperJSONFromString) {
94   // Try to deserialize it through the serializer.
95   JSONStringValueDeserializer str_deserializer(kProperJSON);
96 
97   int error_code = 0;
98   std::string error_message;
99   std::unique_ptr<Value> value =
100       str_deserializer.Deserialize(&error_code, &error_message);
101   ASSERT_TRUE(value.get());
102   ASSERT_EQ(0, error_code);
103   ASSERT_TRUE(error_message.empty());
104   // Verify if the same JSON is still there.
105   CheckJSONIsStillTheSame(*value);
106 }
107 
108 // Test proper JSON deserialization from a StringPiece substring.
TEST(JSONValueDeserializerTest,ReadProperJSONFromStringPiece)109 TEST(JSONValueDeserializerTest, ReadProperJSONFromStringPiece) {
110   // Create a StringPiece for the substring of kProperJSONPadded that matches
111   // kProperJSON.
112   base::StringPiece proper_json(kProperJSONPadded);
113   proper_json = proper_json.substr(5, proper_json.length() - 10);
114   JSONStringValueDeserializer str_deserializer(proper_json);
115 
116   int error_code = 0;
117   std::string error_message;
118   std::unique_ptr<Value> value =
119       str_deserializer.Deserialize(&error_code, &error_message);
120   ASSERT_TRUE(value.get());
121   ASSERT_EQ(0, error_code);
122   ASSERT_TRUE(error_message.empty());
123   // Verify if the same JSON is still there.
124   CheckJSONIsStillTheSame(*value);
125 }
126 
127 // Test that trialing commas are only properly deserialized from string when
128 // the proper flag for that is set.
TEST(JSONValueDeserializerTest,ReadJSONWithTrailingCommasFromString)129 TEST(JSONValueDeserializerTest, ReadJSONWithTrailingCommasFromString) {
130   // Try to deserialize it through the serializer.
131   JSONStringValueDeserializer str_deserializer(kProperJSONWithCommas);
132 
133   int error_code = 0;
134   std::string error_message;
135   std::unique_ptr<Value> value =
136       str_deserializer.Deserialize(&error_code, &error_message);
137   ASSERT_FALSE(value.get());
138   ASSERT_NE(0, error_code);
139   ASSERT_FALSE(error_message.empty());
140   // Now the flag is set and it must pass.
141   str_deserializer.set_allow_trailing_comma(true);
142   value = str_deserializer.Deserialize(&error_code, &error_message);
143   ASSERT_TRUE(value.get());
144   ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
145   // Verify if the same JSON is still there.
146   CheckJSONIsStillTheSame(*value);
147 }
148 
149 // Test proper JSON deserialization from file is working.
TEST(JSONValueDeserializerTest,ReadProperJSONFromFile)150 TEST(JSONValueDeserializerTest, ReadProperJSONFromFile) {
151   ScopedTempDir tempdir;
152   ASSERT_TRUE(tempdir.CreateUniqueTempDir());
153   // Write it down in the file.
154   FilePath temp_file(tempdir.path().AppendASCII("test.json"));
155   ASSERT_EQ(static_cast<int>(strlen(kProperJSON)),
156             WriteFile(temp_file, kProperJSON, strlen(kProperJSON)));
157 
158   // Try to deserialize it through the serializer.
159   JSONFileValueDeserializer file_deserializer(temp_file);
160 
161   int error_code = 0;
162   std::string error_message;
163   std::unique_ptr<Value> value =
164       file_deserializer.Deserialize(&error_code, &error_message);
165   ASSERT_TRUE(value.get());
166   ASSERT_EQ(0, error_code);
167   ASSERT_TRUE(error_message.empty());
168   // Verify if the same JSON is still there.
169   CheckJSONIsStillTheSame(*value);
170 }
171 
172 // Test that trialing commas are only properly deserialized from file when
173 // the proper flag for that is set.
TEST(JSONValueDeserializerTest,ReadJSONWithCommasFromFile)174 TEST(JSONValueDeserializerTest, ReadJSONWithCommasFromFile) {
175   ScopedTempDir tempdir;
176   ASSERT_TRUE(tempdir.CreateUniqueTempDir());
177   // Write it down in the file.
178   FilePath temp_file(tempdir.path().AppendASCII("test.json"));
179   ASSERT_EQ(static_cast<int>(strlen(kProperJSONWithCommas)),
180             WriteFile(temp_file, kProperJSONWithCommas,
181                       strlen(kProperJSONWithCommas)));
182 
183   // Try to deserialize it through the serializer.
184   JSONFileValueDeserializer file_deserializer(temp_file);
185   // This must fail without the proper flag.
186   int error_code = 0;
187   std::string error_message;
188   std::unique_ptr<Value> value =
189       file_deserializer.Deserialize(&error_code, &error_message);
190   ASSERT_FALSE(value.get());
191   ASSERT_NE(0, error_code);
192   ASSERT_FALSE(error_message.empty());
193   // Now the flag is set and it must pass.
194   file_deserializer.set_allow_trailing_comma(true);
195   value = file_deserializer.Deserialize(&error_code, &error_message);
196   ASSERT_TRUE(value.get());
197   ASSERT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code);
198   // Verify if the same JSON is still there.
199   CheckJSONIsStillTheSame(*value);
200 }
201 
TEST(JSONValueDeserializerTest,AllowTrailingComma)202 TEST(JSONValueDeserializerTest, AllowTrailingComma) {
203   std::unique_ptr<Value> root;
204   std::unique_ptr<Value> root_expected;
205   static const char kTestWithCommas[] = "{\"key\": [true,],}";
206   static const char kTestNoCommas[] = "{\"key\": [true]}";
207 
208   JSONStringValueDeserializer deserializer(kTestWithCommas);
209   deserializer.set_allow_trailing_comma(true);
210   JSONStringValueDeserializer deserializer_expected(kTestNoCommas);
211   root = deserializer.Deserialize(NULL, NULL);
212   ASSERT_TRUE(root.get());
213   root_expected = deserializer_expected.Deserialize(NULL, NULL);
214   ASSERT_TRUE(root_expected.get());
215   ASSERT_TRUE(root->Equals(root_expected.get()));
216 }
217 
TEST(JSONValueSerializerTest,Roundtrip)218 TEST(JSONValueSerializerTest, Roundtrip) {
219   static const char kOriginalSerialization[] =
220     "{\"bool\":true,\"double\":3.14,\"int\":42,\"list\":[1,2],\"null\":null}";
221   JSONStringValueDeserializer deserializer(kOriginalSerialization);
222   std::unique_ptr<Value> root = deserializer.Deserialize(NULL, NULL);
223   ASSERT_TRUE(root.get());
224   ASSERT_TRUE(root->IsType(Value::TYPE_DICTIONARY));
225 
226   DictionaryValue* root_dict = static_cast<DictionaryValue*>(root.get());
227 
228   Value* null_value = NULL;
229   ASSERT_TRUE(root_dict->Get("null", &null_value));
230   ASSERT_TRUE(null_value);
231   ASSERT_TRUE(null_value->IsType(Value::TYPE_NULL));
232 
233   bool bool_value = false;
234   ASSERT_TRUE(root_dict->GetBoolean("bool", &bool_value));
235   ASSERT_TRUE(bool_value);
236 
237   int int_value = 0;
238   ASSERT_TRUE(root_dict->GetInteger("int", &int_value));
239   ASSERT_EQ(42, int_value);
240 
241   double double_value = 0.0;
242   ASSERT_TRUE(root_dict->GetDouble("double", &double_value));
243   ASSERT_DOUBLE_EQ(3.14, double_value);
244 
245   std::string test_serialization;
246   JSONStringValueSerializer mutable_serializer(&test_serialization);
247   ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
248   ASSERT_EQ(kOriginalSerialization, test_serialization);
249 
250   mutable_serializer.set_pretty_print(true);
251   ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
252   // JSON output uses a different newline style on Windows than on other
253   // platforms.
254 #if defined(OS_WIN)
255 #define JSON_NEWLINE "\r\n"
256 #else
257 #define JSON_NEWLINE "\n"
258 #endif
259   const std::string pretty_serialization =
260     "{" JSON_NEWLINE
261     "   \"bool\": true," JSON_NEWLINE
262     "   \"double\": 3.14," JSON_NEWLINE
263     "   \"int\": 42," JSON_NEWLINE
264     "   \"list\": [ 1, 2 ]," JSON_NEWLINE
265     "   \"null\": null" JSON_NEWLINE
266     "}" JSON_NEWLINE;
267 #undef JSON_NEWLINE
268   ASSERT_EQ(pretty_serialization, test_serialization);
269 }
270 
TEST(JSONValueSerializerTest,StringEscape)271 TEST(JSONValueSerializerTest, StringEscape) {
272   string16 all_chars;
273   for (int i = 1; i < 256; ++i) {
274     all_chars += static_cast<char16>(i);
275   }
276   // Generated in in Firefox using the following js (with an extra backslash for
277   // double quote):
278   // var s = '';
279   // for (var i = 1; i < 256; ++i) { s += String.fromCharCode(i); }
280   // uneval(s).replace(/\\/g, "\\\\");
281   std::string all_chars_expected =
282       "\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007\\b\\t\\n\\u000B\\f\\r"
283       "\\u000E\\u000F\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017"
284       "\\u0018\\u0019\\u001A\\u001B\\u001C\\u001D\\u001E\\u001F !\\\"#$%&'()*+,"
285       "-./0123456789:;\\u003C=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_`abcde"
286       "fghijklmnopqrstuvwxyz{|}~\x7F\xC2\x80\xC2\x81\xC2\x82\xC2\x83\xC2\x84"
287       "\xC2\x85\xC2\x86\xC2\x87\xC2\x88\xC2\x89\xC2\x8A\xC2\x8B\xC2\x8C\xC2\x8D"
288       "\xC2\x8E\xC2\x8F\xC2\x90\xC2\x91\xC2\x92\xC2\x93\xC2\x94\xC2\x95\xC2\x96"
289       "\xC2\x97\xC2\x98\xC2\x99\xC2\x9A\xC2\x9B\xC2\x9C\xC2\x9D\xC2\x9E\xC2\x9F"
290       "\xC2\xA0\xC2\xA1\xC2\xA2\xC2\xA3\xC2\xA4\xC2\xA5\xC2\xA6\xC2\xA7\xC2\xA8"
291       "\xC2\xA9\xC2\xAA\xC2\xAB\xC2\xAC\xC2\xAD\xC2\xAE\xC2\xAF\xC2\xB0\xC2\xB1"
292       "\xC2\xB2\xC2\xB3\xC2\xB4\xC2\xB5\xC2\xB6\xC2\xB7\xC2\xB8\xC2\xB9\xC2\xBA"
293       "\xC2\xBB\xC2\xBC\xC2\xBD\xC2\xBE\xC2\xBF\xC3\x80\xC3\x81\xC3\x82\xC3\x83"
294       "\xC3\x84\xC3\x85\xC3\x86\xC3\x87\xC3\x88\xC3\x89\xC3\x8A\xC3\x8B\xC3\x8C"
295       "\xC3\x8D\xC3\x8E\xC3\x8F\xC3\x90\xC3\x91\xC3\x92\xC3\x93\xC3\x94\xC3\x95"
296       "\xC3\x96\xC3\x97\xC3\x98\xC3\x99\xC3\x9A\xC3\x9B\xC3\x9C\xC3\x9D\xC3\x9E"
297       "\xC3\x9F\xC3\xA0\xC3\xA1\xC3\xA2\xC3\xA3\xC3\xA4\xC3\xA5\xC3\xA6\xC3\xA7"
298       "\xC3\xA8\xC3\xA9\xC3\xAA\xC3\xAB\xC3\xAC\xC3\xAD\xC3\xAE\xC3\xAF\xC3\xB0"
299       "\xC3\xB1\xC3\xB2\xC3\xB3\xC3\xB4\xC3\xB5\xC3\xB6\xC3\xB7\xC3\xB8\xC3\xB9"
300       "\xC3\xBA\xC3\xBB\xC3\xBC\xC3\xBD\xC3\xBE\xC3\xBF";
301 
302   std::string expected_output = "{\"all_chars\":\"" + all_chars_expected +
303                                  "\"}";
304   // Test JSONWriter interface
305   std::string output_js;
306   DictionaryValue valueRoot;
307   valueRoot.SetString("all_chars", all_chars);
308   JSONWriter::Write(valueRoot, &output_js);
309   ASSERT_EQ(expected_output, output_js);
310 
311   // Test JSONValueSerializer interface (uses JSONWriter).
312   JSONStringValueSerializer serializer(&output_js);
313   ASSERT_TRUE(serializer.Serialize(valueRoot));
314   ASSERT_EQ(expected_output, output_js);
315 }
316 
TEST(JSONValueSerializerTest,UnicodeStrings)317 TEST(JSONValueSerializerTest, UnicodeStrings) {
318   // unicode string json -> escaped ascii text
319   DictionaryValue root;
320   string16 test(WideToUTF16(L"\x7F51\x9875"));
321   root.SetString("web", test);
322 
323   static const char kExpected[] = "{\"web\":\"\xE7\xBD\x91\xE9\xA1\xB5\"}";
324 
325   std::string actual;
326   JSONStringValueSerializer serializer(&actual);
327   ASSERT_TRUE(serializer.Serialize(root));
328   ASSERT_EQ(kExpected, actual);
329 
330   // escaped ascii text -> json
331   JSONStringValueDeserializer deserializer(kExpected);
332   std::unique_ptr<Value> deserial_root = deserializer.Deserialize(NULL, NULL);
333   ASSERT_TRUE(deserial_root.get());
334   DictionaryValue* dict_root =
335       static_cast<DictionaryValue*>(deserial_root.get());
336   string16 web_value;
337   ASSERT_TRUE(dict_root->GetString("web", &web_value));
338   ASSERT_EQ(test, web_value);
339 }
340 
TEST(JSONValueSerializerTest,HexStrings)341 TEST(JSONValueSerializerTest, HexStrings) {
342   // hex string json -> escaped ascii text
343   DictionaryValue root;
344   string16 test(WideToUTF16(L"\x01\x02"));
345   root.SetString("test", test);
346 
347   static const char kExpected[] = "{\"test\":\"\\u0001\\u0002\"}";
348 
349   std::string actual;
350   JSONStringValueSerializer serializer(&actual);
351   ASSERT_TRUE(serializer.Serialize(root));
352   ASSERT_EQ(kExpected, actual);
353 
354   // escaped ascii text -> json
355   JSONStringValueDeserializer deserializer(kExpected);
356   std::unique_ptr<Value> deserial_root = deserializer.Deserialize(NULL, NULL);
357   ASSERT_TRUE(deserial_root.get());
358   DictionaryValue* dict_root =
359       static_cast<DictionaryValue*>(deserial_root.get());
360   string16 test_value;
361   ASSERT_TRUE(dict_root->GetString("test", &test_value));
362   ASSERT_EQ(test, test_value);
363 
364   // Test converting escaped regular chars
365   static const char kEscapedChars[] = "{\"test\":\"\\u0067\\u006f\"}";
366   JSONStringValueDeserializer deserializer2(kEscapedChars);
367   deserial_root = deserializer2.Deserialize(NULL, NULL);
368   ASSERT_TRUE(deserial_root.get());
369   dict_root = static_cast<DictionaryValue*>(deserial_root.get());
370   ASSERT_TRUE(dict_root->GetString("test", &test_value));
371   ASSERT_EQ(ASCIIToUTF16("go"), test_value);
372 }
373 
TEST(JSONValueSerializerTest,JSONReaderComments)374 TEST(JSONValueSerializerTest, JSONReaderComments) {
375   ValidateJsonList("[ // 2, 3, ignore me ] \n1 ]");
376   ValidateJsonList("[ /* 2, \n3, ignore me ]*/ \n1 ]");
377   ValidateJsonList("//header\n[ // 2, \n// 3, \n1 ]// footer");
378   ValidateJsonList("/*\n[ // 2, \n// 3, \n1 ]*/[1]");
379   ValidateJsonList("[ 1 /* one */ ] /* end */");
380   ValidateJsonList("[ 1 //// ,2\r\n ]");
381 
382   // It's ok to have a comment in a string.
383   std::unique_ptr<Value> root = JSONReader::Read("[\"// ok\\n /* foo */ \"]");
384   ASSERT_TRUE(root.get() && root->IsType(Value::TYPE_LIST));
385   ListValue* list = static_cast<ListValue*>(root.get());
386   ASSERT_EQ(1U, list->GetSize());
387   Value* elt = NULL;
388   ASSERT_TRUE(list->Get(0, &elt));
389   std::string value;
390   ASSERT_TRUE(elt && elt->GetAsString(&value));
391   ASSERT_EQ("// ok\n /* foo */ ", value);
392 
393   // You can't nest comments.
394   root = JSONReader::Read("/* /* inner */ outer */ [ 1 ]");
395   ASSERT_FALSE(root.get());
396 
397   // Not a open comment token.
398   root = JSONReader::Read("/ * * / [1]");
399   ASSERT_FALSE(root.get());
400 }
401 
402 #if !defined(__ANDROID__) && !defined(__ANDROID_HOST__)
403 class JSONFileValueSerializerTest : public testing::Test {
404  protected:
SetUp()405   void SetUp() override { ASSERT_TRUE(temp_dir_.CreateUniqueTempDir()); }
406 
407   base::ScopedTempDir temp_dir_;
408 };
409 
TEST_F(JSONFileValueSerializerTest,Roundtrip)410 TEST_F(JSONFileValueSerializerTest, Roundtrip) {
411   base::FilePath original_file_path;
412   ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
413   original_file_path =
414       original_file_path.Append(FILE_PATH_LITERAL("serializer_test.json"));
415 
416   ASSERT_TRUE(PathExists(original_file_path));
417 
418   JSONFileValueDeserializer deserializer(original_file_path);
419   std::unique_ptr<Value> root;
420   root = deserializer.Deserialize(NULL, NULL);
421 
422   ASSERT_TRUE(root.get());
423   ASSERT_TRUE(root->IsType(Value::TYPE_DICTIONARY));
424 
425   DictionaryValue* root_dict = static_cast<DictionaryValue*>(root.get());
426 
427   Value* null_value = NULL;
428   ASSERT_TRUE(root_dict->Get("null", &null_value));
429   ASSERT_TRUE(null_value);
430   ASSERT_TRUE(null_value->IsType(Value::TYPE_NULL));
431 
432   bool bool_value = false;
433   ASSERT_TRUE(root_dict->GetBoolean("bool", &bool_value));
434   ASSERT_TRUE(bool_value);
435 
436   int int_value = 0;
437   ASSERT_TRUE(root_dict->GetInteger("int", &int_value));
438   ASSERT_EQ(42, int_value);
439 
440   std::string string_value;
441   ASSERT_TRUE(root_dict->GetString("string", &string_value));
442   ASSERT_EQ("hello", string_value);
443 
444   // Now try writing.
445   const base::FilePath written_file_path =
446       temp_dir_.path().Append(FILE_PATH_LITERAL("test_output.js"));
447 
448   ASSERT_FALSE(PathExists(written_file_path));
449   JSONFileValueSerializer serializer(written_file_path);
450   ASSERT_TRUE(serializer.Serialize(*root));
451   ASSERT_TRUE(PathExists(written_file_path));
452 
453   // Now compare file contents.
454   EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
455   EXPECT_TRUE(base::DeleteFile(written_file_path, false));
456 }
457 
TEST_F(JSONFileValueSerializerTest,RoundtripNested)458 TEST_F(JSONFileValueSerializerTest, RoundtripNested) {
459   base::FilePath original_file_path;
460   ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &original_file_path));
461   original_file_path = original_file_path.Append(
462       FILE_PATH_LITERAL("serializer_nested_test.json"));
463 
464   ASSERT_TRUE(PathExists(original_file_path));
465 
466   JSONFileValueDeserializer deserializer(original_file_path);
467   std::unique_ptr<Value> root;
468   root = deserializer.Deserialize(NULL, NULL);
469   ASSERT_TRUE(root.get());
470 
471   // Now try writing.
472   base::FilePath written_file_path = temp_dir_.path().Append(
473       FILE_PATH_LITERAL("test_output.json"));
474 
475   ASSERT_FALSE(PathExists(written_file_path));
476   JSONFileValueSerializer serializer(written_file_path);
477   ASSERT_TRUE(serializer.Serialize(*root));
478   ASSERT_TRUE(PathExists(written_file_path));
479 
480   // Now compare file contents.
481   EXPECT_TRUE(TextContentsEqual(original_file_path, written_file_path));
482   EXPECT_TRUE(base::DeleteFile(written_file_path, false));
483 }
484 
TEST_F(JSONFileValueSerializerTest,NoWhitespace)485 TEST_F(JSONFileValueSerializerTest, NoWhitespace) {
486   base::FilePath source_file_path;
487   ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &source_file_path));
488   source_file_path = source_file_path.Append(
489       FILE_PATH_LITERAL("serializer_test_nowhitespace.json"));
490   ASSERT_TRUE(PathExists(source_file_path));
491   JSONFileValueDeserializer deserializer(source_file_path);
492   std::unique_ptr<Value> root;
493   root = deserializer.Deserialize(NULL, NULL);
494   ASSERT_TRUE(root.get());
495 }
496 #endif  // !__ANDROID__ && !__ANDROID_HOST__
497 
498 }  // namespace
499 
500 }  // namespace base
501