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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 "base/json/json_parser.h" |
| 6 |
| 7 #include "base/json/json_reader.h" |
| 8 #include "base/memory/scoped_ptr.h" |
| 9 #include "base/values.h" |
| 10 #include "testing/gtest/include/gtest/gtest.h" |
| 11 |
| 12 namespace base { |
| 13 namespace internal { |
| 14 |
| 15 class JSONParserTest : public testing::Test { |
| 16 public: |
| 17 JSONParser* NewTestParser(const std::string& input) { |
| 18 JSONParser* parser = new JSONParser(JSON_PARSE_RFC); |
| 19 parser->start_pos_ = input.data(); |
| 20 parser->pos_ = parser->start_pos_; |
| 21 parser->end_pos_ = parser->start_pos_ + input.length(); |
| 22 return parser; |
| 23 } |
| 24 |
| 25 void TestLastThree(JSONParser* parser) { |
| 26 EXPECT_EQ(',', *parser->NextChar()); |
| 27 EXPECT_EQ('|', *parser->NextChar()); |
| 28 EXPECT_EQ('\0', *parser->NextChar()); |
| 29 EXPECT_EQ(parser->end_pos_, parser->pos_); |
| 30 } |
| 31 }; |
| 32 |
| 33 TEST_F(JSONParserTest, NextChar) { |
| 34 std::string input("Hello world"); |
| 35 scoped_ptr<JSONParser> parser(NewTestParser(input)); |
| 36 |
| 37 EXPECT_EQ('H', *parser->pos_); |
| 38 for (size_t i = 1; i < input.length(); ++i) { |
| 39 EXPECT_EQ(input[i], *parser->NextChar()); |
| 40 } |
| 41 EXPECT_EQ(parser->end_pos_, parser->NextChar()); |
| 42 } |
| 43 |
| 44 TEST_F(JSONParserTest, ConsumeString) { |
| 45 std::string input("\"test\",|"); |
| 46 scoped_ptr<JSONParser> parser(NewTestParser(input)); |
| 47 scoped_ptr<Value> value(parser->ConsumeString()); |
| 48 EXPECT_EQ('"', *parser->pos_); |
| 49 |
| 50 TestLastThree(parser.get()); |
| 51 |
| 52 ASSERT_TRUE(value.get()); |
| 53 std::string str; |
| 54 EXPECT_TRUE(value->GetAsString(&str)); |
| 55 EXPECT_EQ("test", str); |
| 56 } |
| 57 |
| 58 TEST_F(JSONParserTest, ConsumeList) { |
| 59 std::string input("[true, false],|"); |
| 60 scoped_ptr<JSONParser> parser(NewTestParser(input)); |
| 61 scoped_ptr<Value> value(parser->ConsumeList()); |
| 62 EXPECT_EQ(']', *parser->pos_); |
| 63 |
| 64 TestLastThree(parser.get()); |
| 65 |
| 66 ASSERT_TRUE(value.get()); |
| 67 base::ListValue* list; |
| 68 EXPECT_TRUE(value->GetAsList(&list)); |
| 69 EXPECT_EQ(2u, list->GetSize()); |
| 70 } |
| 71 |
| 72 TEST_F(JSONParserTest, ConsumeDictionary) { |
| 73 std::string input("{\"abc\":\"def\"},|"); |
| 74 scoped_ptr<JSONParser> parser(NewTestParser(input)); |
| 75 scoped_ptr<Value> value(parser->ConsumeDictionary()); |
| 76 EXPECT_EQ('}', *parser->pos_); |
| 77 |
| 78 TestLastThree(parser.get()); |
| 79 |
| 80 ASSERT_TRUE(value.get()); |
| 81 base::DictionaryValue* dict; |
| 82 EXPECT_TRUE(value->GetAsDictionary(&dict)); |
| 83 std::string str; |
| 84 EXPECT_TRUE(dict->GetString("abc", &str)); |
| 85 EXPECT_EQ("def", str); |
| 86 } |
| 87 |
| 88 TEST_F(JSONParserTest, ConsumeLiterals) { |
| 89 // Literal |true|. |
| 90 std::string input("true,|"); |
| 91 scoped_ptr<JSONParser> parser(NewTestParser(input)); |
| 92 scoped_ptr<Value> value(parser->ConsumeLiteral()); |
| 93 EXPECT_EQ('e', *parser->pos_); |
| 94 |
| 95 TestLastThree(parser.get()); |
| 96 |
| 97 ASSERT_TRUE(value.get()); |
| 98 bool bool_value = false; |
| 99 EXPECT_TRUE(value->GetAsBoolean(&bool_value)); |
| 100 EXPECT_TRUE(bool_value); |
| 101 |
| 102 // Literal |false|. |
| 103 input = "false,|"; |
| 104 parser.reset(NewTestParser(input)); |
| 105 value.reset(parser->ConsumeLiteral()); |
| 106 EXPECT_EQ('e', *parser->pos_); |
| 107 |
| 108 TestLastThree(parser.get()); |
| 109 |
| 110 ASSERT_TRUE(value.get()); |
| 111 EXPECT_TRUE(value->GetAsBoolean(&bool_value)); |
| 112 EXPECT_FALSE(bool_value); |
| 113 |
| 114 // Literal |null|. |
| 115 input = "null,|"; |
| 116 parser.reset(NewTestParser(input)); |
| 117 value.reset(parser->ConsumeLiteral()); |
| 118 EXPECT_EQ('l', *parser->pos_); |
| 119 |
| 120 TestLastThree(parser.get()); |
| 121 |
| 122 ASSERT_TRUE(value.get()); |
| 123 EXPECT_TRUE(value->IsType(Value::TYPE_NULL)); |
| 124 } |
| 125 |
| 126 TEST_F(JSONParserTest, ConsumeNumbers) { |
| 127 // Integer. |
| 128 std::string input("1234,|"); |
| 129 scoped_ptr<JSONParser> parser(NewTestParser(input)); |
| 130 scoped_ptr<Value> value(parser->ConsumeNumber()); |
| 131 EXPECT_EQ('4', *parser->pos_); |
| 132 |
| 133 TestLastThree(parser.get()); |
| 134 |
| 135 ASSERT_TRUE(value.get()); |
| 136 int number_i; |
| 137 EXPECT_TRUE(value->GetAsInteger(&number_i)); |
| 138 EXPECT_EQ(1234, number_i); |
| 139 |
| 140 // Negative integer. |
| 141 input = "-1234,|"; |
| 142 parser.reset(NewTestParser(input)); |
| 143 value.reset(parser->ConsumeNumber()); |
| 144 EXPECT_EQ('4', *parser->pos_); |
| 145 |
| 146 TestLastThree(parser.get()); |
| 147 |
| 148 ASSERT_TRUE(value.get()); |
| 149 EXPECT_TRUE(value->GetAsInteger(&number_i)); |
| 150 EXPECT_EQ(-1234, number_i); |
| 151 |
| 152 // Double. |
| 153 input = "12.34,|"; |
| 154 parser.reset(NewTestParser(input)); |
| 155 value.reset(parser->ConsumeNumber()); |
| 156 EXPECT_EQ('4', *parser->pos_); |
| 157 |
| 158 TestLastThree(parser.get()); |
| 159 |
| 160 ASSERT_TRUE(value.get()); |
| 161 double number_d; |
| 162 EXPECT_TRUE(value->GetAsDouble(&number_d)); |
| 163 EXPECT_EQ(12.34, number_d); |
| 164 |
| 165 // Scientific. |
| 166 input = "42e3,|"; |
| 167 parser.reset(NewTestParser(input)); |
| 168 value.reset(parser->ConsumeNumber()); |
| 169 EXPECT_EQ('3', *parser->pos_); |
| 170 |
| 171 TestLastThree(parser.get()); |
| 172 |
| 173 ASSERT_TRUE(value.get()); |
| 174 EXPECT_TRUE(value->GetAsDouble(&number_d)); |
| 175 EXPECT_EQ(42000, number_d); |
| 176 |
| 177 // Negative scientific. |
| 178 input = "314159e-5,|"; |
| 179 parser.reset(NewTestParser(input)); |
| 180 value.reset(parser->ConsumeNumber()); |
| 181 EXPECT_EQ('5', *parser->pos_); |
| 182 |
| 183 TestLastThree(parser.get()); |
| 184 |
| 185 ASSERT_TRUE(value.get()); |
| 186 EXPECT_TRUE(value->GetAsDouble(&number_d)); |
| 187 EXPECT_EQ(3.14159, number_d); |
| 188 |
| 189 // Positive scientific. |
| 190 input = "0.42e+3,|"; |
| 191 parser.reset(NewTestParser(input)); |
| 192 value.reset(parser->ConsumeNumber()); |
| 193 EXPECT_EQ('3', *parser->pos_); |
| 194 |
| 195 TestLastThree(parser.get()); |
| 196 |
| 197 ASSERT_TRUE(value.get()); |
| 198 EXPECT_TRUE(value->GetAsDouble(&number_d)); |
| 199 EXPECT_EQ(420, number_d); |
| 200 } |
| 201 |
| 202 TEST_F(JSONParserTest, ErrorMessages) { |
| 203 // Error strings should not be modified in case of success. |
| 204 std::string error_message; |
| 205 int error_code = 0; |
| 206 scoped_ptr<Value> root; |
| 207 root.reset(JSONReader::ReadAndReturnError("[42]", JSON_PARSE_RFC, |
| 208 &error_code, &error_message)); |
| 209 EXPECT_TRUE(error_message.empty()); |
| 210 EXPECT_EQ(0, error_code); |
| 211 |
| 212 // Test line and column counting |
| 213 const char* big_json = "[\n0,\n1,\n2,\n3,4,5,6 7,\n8,\n9\n]"; |
| 214 // error here ---------------------------------^ |
| 215 root.reset(JSONReader::ReadAndReturnError(big_json, JSON_PARSE_RFC, |
| 216 &error_code, &error_message)); |
| 217 EXPECT_FALSE(root.get()); |
| 218 EXPECT_EQ(JSONParser::FormatErrorMessage(5, 10, JSONReader::kSyntaxError), |
| 219 error_message); |
| 220 EXPECT_EQ(JSONReader::JSON_SYNTAX_ERROR, error_code); |
| 221 |
| 222 // Test each of the error conditions |
| 223 root.reset(JSONReader::ReadAndReturnError("{},{}", JSON_PARSE_RFC, |
| 224 &error_code, &error_message)); |
| 225 EXPECT_FALSE(root.get()); |
| 226 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 3, |
| 227 JSONReader::kUnexpectedDataAfterRoot), error_message); |
| 228 EXPECT_EQ(JSONReader::JSON_UNEXPECTED_DATA_AFTER_ROOT, error_code); |
| 229 |
| 230 std::string nested_json; |
| 231 for (int i = 0; i < 101; ++i) { |
| 232 nested_json.insert(nested_json.begin(), '['); |
| 233 nested_json.append(1, ']'); |
| 234 } |
| 235 root.reset(JSONReader::ReadAndReturnError(nested_json, JSON_PARSE_RFC, |
| 236 &error_code, &error_message)); |
| 237 EXPECT_FALSE(root.get()); |
| 238 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 100, JSONReader::kTooMuchNesting), |
| 239 error_message); |
| 240 EXPECT_EQ(JSONReader::JSON_TOO_MUCH_NESTING, error_code); |
| 241 |
| 242 root.reset(JSONReader::ReadAndReturnError("[1,]", JSON_PARSE_RFC, |
| 243 &error_code, &error_message)); |
| 244 EXPECT_FALSE(root.get()); |
| 245 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 4, JSONReader::kTrailingComma), |
| 246 error_message); |
| 247 EXPECT_EQ(JSONReader::JSON_TRAILING_COMMA, error_code); |
| 248 |
| 249 root.reset(JSONReader::ReadAndReturnError("{foo:\"bar\"}", JSON_PARSE_RFC, |
| 250 &error_code, &error_message)); |
| 251 EXPECT_FALSE(root.get()); |
| 252 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 2, |
| 253 JSONReader::kUnquotedDictionaryKey), error_message); |
| 254 EXPECT_EQ(JSONReader::JSON_UNQUOTED_DICTIONARY_KEY, error_code); |
| 255 |
| 256 root.reset(JSONReader::ReadAndReturnError("{\"foo\":\"bar\",}", |
| 257 JSON_PARSE_RFC, |
| 258 &error_code, &error_message)); |
| 259 EXPECT_FALSE(root.get()); |
| 260 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 14, JSONReader::kTrailingComma), |
| 261 error_message); |
| 262 |
| 263 root.reset(JSONReader::ReadAndReturnError("[nu]", JSON_PARSE_RFC, |
| 264 &error_code, &error_message)); |
| 265 EXPECT_FALSE(root.get()); |
| 266 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 2, JSONReader::kSyntaxError), |
| 267 error_message); |
| 268 EXPECT_EQ(JSONReader::JSON_SYNTAX_ERROR, error_code); |
| 269 |
| 270 root.reset(JSONReader::ReadAndReturnError("[\"xxx\\xq\"]", JSON_PARSE_RFC, |
| 271 &error_code, &error_message)); |
| 272 EXPECT_FALSE(root.get()); |
| 273 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 7, JSONReader::kInvalidEscape), |
| 274 error_message); |
| 275 EXPECT_EQ(JSONReader::JSON_INVALID_ESCAPE, error_code); |
| 276 |
| 277 root.reset(JSONReader::ReadAndReturnError("[\"xxx\\uq\"]", JSON_PARSE_RFC, |
| 278 &error_code, &error_message)); |
| 279 EXPECT_FALSE(root.get()); |
| 280 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 7, JSONReader::kInvalidEscape), |
| 281 error_message); |
| 282 EXPECT_EQ(JSONReader::JSON_INVALID_ESCAPE, error_code); |
| 283 |
| 284 root.reset(JSONReader::ReadAndReturnError("[\"xxx\\q\"]", JSON_PARSE_RFC, |
| 285 &error_code, &error_message)); |
| 286 EXPECT_FALSE(root.get()); |
| 287 EXPECT_EQ(JSONParser::FormatErrorMessage(1, 7, JSONReader::kInvalidEscape), |
| 288 error_message); |
| 289 EXPECT_EQ(JSONReader::JSON_INVALID_ESCAPE, error_code); |
| 290 } |
| 291 |
| 292 } // namespace internal |
| 293 } // namespace base |
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