2 * Copyright 2015 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include <folly/json.h>
19 #include <gtest/gtest.h>
20 #include <gflags/gflags.h>
22 #include <boost/next_prior.hpp>
25 using folly::parseJson;
29 auto val = parseJson("\"I \u2665 UTF-8\"");
30 EXPECT_EQ("I \u2665 UTF-8", val.asString());
31 val = parseJson("\"I \\u2665 UTF-8\"");
32 EXPECT_EQ("I \u2665 UTF-8", val.asString());
33 val = parseJson("\"I \U0001D11E playing in G-clef\"");
34 EXPECT_EQ("I \U0001D11E playing in G-clef", val.asString());
36 val = parseJson("\"I \\uD834\\uDD1E playing in G-clef\"");
37 EXPECT_EQ("I \U0001D11E playing in G-clef", val.asString());
41 auto num = parseJson("12");
42 EXPECT_TRUE(num.isInt());
44 num = parseJson("12e5");
45 EXPECT_TRUE(num.isDouble());
47 auto numAs1 = num.asDouble();
48 EXPECT_EQ(numAs1, 12e5);
50 EXPECT_EQ(num, 1200000);
52 auto largeNumber = parseJson("4611686018427387904");
53 EXPECT_TRUE(largeNumber.isInt());
54 EXPECT_EQ(largeNumber, 4611686018427387904L);
56 auto negative = parseJson("-123");
57 EXPECT_EQ(negative, -123);
59 auto bfalse = parseJson("false");
60 auto btrue = parseJson("true");
61 EXPECT_EQ(bfalse, false);
62 EXPECT_EQ(btrue, true);
64 auto null = parseJson("null");
65 EXPECT_TRUE(null == nullptr);
67 auto doub1 = parseJson("12.0");
68 auto doub2 = parseJson("12e2");
69 EXPECT_EQ(doub1, 12.0);
70 EXPECT_EQ(doub2, 12e2);
71 EXPECT_EQ(std::numeric_limits<double>::infinity(),
72 parseJson("Infinity").asDouble());
73 EXPECT_EQ(-std::numeric_limits<double>::infinity(),
74 parseJson("-Infinity").asDouble());
75 EXPECT_TRUE(std::isnan(parseJson("NaN").asDouble()));
78 EXPECT_THROW(parseJson("infinity"), std::runtime_error);
79 EXPECT_THROW(parseJson("inf"), std::runtime_error);
80 EXPECT_THROW(parseJson("Inf"), std::runtime_error);
81 EXPECT_THROW(parseJson("INF"), std::runtime_error);
82 EXPECT_THROW(parseJson("nan"), std::runtime_error);
83 EXPECT_THROW(parseJson("NAN"), std::runtime_error);
85 auto array = parseJson(
86 "[12,false, false , null , [12e4,32, [], 12]]");
87 EXPECT_EQ(array.size(), 5);
88 if (array.size() == 5) {
89 EXPECT_EQ(boost::prior(array.end())->size(), 4);
92 EXPECT_THROW(parseJson("\n[12,\n\nnotvalidjson"),
95 EXPECT_THROW(parseJson("12e2e2"),
98 EXPECT_THROW(parseJson("{\"foo\":12,\"bar\":42} \"something\""),
101 dynamic value = dynamic::object
107 dynamic::object("a", "b")
117 // Print then parse and get the same thing, hopefully.
118 EXPECT_EQ(value, parseJson(toJson(value)));
121 // Test an object with non-string values.
122 dynamic something = parseJson(
123 "{\"old_value\":40,\"changed\":true,\"opened\":false}");
124 dynamic expected = dynamic::object
128 EXPECT_EQ(something, expected);
131 TEST(Json, ParseTrailingComma) {
132 folly::json::serialization_opts on, off;
133 on.allow_trailing_comma = true;
134 off.allow_trailing_comma = false;
136 dynamic arr { 1, 2 };
137 EXPECT_EQ(arr, parseJson("[1, 2]", on));
138 EXPECT_EQ(arr, parseJson("[1, 2,]", on));
139 EXPECT_EQ(arr, parseJson("[1, 2, ]", on));
140 EXPECT_EQ(arr, parseJson("[1, 2 , ]", on));
141 EXPECT_EQ(arr, parseJson("[1, 2 ,]", on));
142 EXPECT_THROW(parseJson("[1, 2,]", off), std::runtime_error);
144 dynamic obj = dynamic::object("a", 1);
145 EXPECT_EQ(obj, parseJson("{\"a\": 1}", on));
146 EXPECT_EQ(obj, parseJson("{\"a\": 1,}", on));
147 EXPECT_EQ(obj, parseJson("{\"a\": 1, }", on));
148 EXPECT_EQ(obj, parseJson("{\"a\": 1 , }", on));
149 EXPECT_EQ(obj, parseJson("{\"a\": 1 ,}", on));
150 EXPECT_THROW(parseJson("{\"a\":1,}", off), std::runtime_error);
153 TEST(Json, BoolConversion) {
154 EXPECT_TRUE(parseJson("42").asBool());
157 TEST(Json, JavascriptSafe) {
158 auto badDouble = (1ll << 63ll) + 1;
159 dynamic badDyn = badDouble;
160 EXPECT_EQ(folly::toJson(badDouble), folly::to<folly::fbstring>(badDouble));
161 folly::json::serialization_opts opts;
162 opts.javascript_safe = true;
163 EXPECT_ANY_THROW(folly::json::serialize(badDouble, opts));
165 auto okDouble = 1ll << 63ll;
166 dynamic okDyn = okDouble;
167 EXPECT_EQ(folly::toJson(okDouble), folly::to<folly::fbstring>(okDouble));
170 TEST(Json, Produce) {
171 auto value = parseJson(R"( "f\"oo" )");
172 EXPECT_EQ(toJson(value), R"("f\"oo")");
173 value = parseJson("\"Control code: \001 \002 \x1f\"");
174 EXPECT_EQ(toJson(value), R"("Control code: \u0001 \u0002 \u001f")");
176 // We're not allowed to have non-string keys in json.
177 EXPECT_THROW(toJson(dynamic::object("abc", "xyz")(42.33, "asd")),
180 // Check Infinity/Nan
181 folly::json::serialization_opts opts;
182 opts.allow_nan_inf = true;
183 EXPECT_EQ("Infinity",
184 folly::json::serialize(parseJson("Infinity"), opts).toStdString());
186 folly::json::serialize(parseJson("NaN"), opts).toStdString());
189 TEST(Json, JsonEscape) {
190 folly::json::serialization_opts opts;
192 folly::json::serialize("\b\f\n\r\x01\t\\\"/\v\a", opts),
193 R"("\b\f\n\r\u0001\t\\\"/\u000b\u0007")");
196 TEST(Json, JsonNonAsciiEncoding) {
197 folly::json::serialization_opts opts;
198 opts.encode_non_ascii = true;
201 EXPECT_EQ(folly::json::serialize("\x1f", opts), R"("\u001f")");
202 EXPECT_EQ(folly::json::serialize("\xc2\xa2", opts), R"("\u00a2")");
203 EXPECT_EQ(folly::json::serialize("\xe2\x82\xac", opts), R"("\u20ac")");
205 // multiple unicode encodings
207 folly::json::serialize("\x1f\xe2\x82\xac", opts),
208 R"("\u001f\u20ac")");
210 folly::json::serialize("\x1f\xc2\xa2\xe2\x82\xac", opts),
211 R"("\u001f\u00a2\u20ac")");
213 folly::json::serialize("\xc2\x80\xef\xbf\xbf", opts),
214 R"("\u0080\uffff")");
216 folly::json::serialize("\xe0\xa0\x80\xdf\xbf", opts),
217 R"("\u0800\u07ff")");
219 // first possible sequence of a certain length
220 EXPECT_EQ(folly::json::serialize("\xc2\x80", opts), R"("\u0080")");
221 EXPECT_EQ(folly::json::serialize("\xe0\xa0\x80", opts), R"("\u0800")");
223 // last possible sequence of a certain length
224 EXPECT_EQ(folly::json::serialize("\xdf\xbf", opts), R"("\u07ff")");
225 EXPECT_EQ(folly::json::serialize("\xef\xbf\xbf", opts), R"("\uffff")");
227 // other boundary conditions
228 EXPECT_EQ(folly::json::serialize("\xed\x9f\xbf", opts), R"("\ud7ff")");
229 EXPECT_EQ(folly::json::serialize("\xee\x80\x80", opts), R"("\ue000")");
230 EXPECT_EQ(folly::json::serialize("\xef\xbf\xbd", opts), R"("\ufffd")");
232 // incomplete sequences
233 EXPECT_ANY_THROW(folly::json::serialize("a\xed\x9f", opts));
234 EXPECT_ANY_THROW(folly::json::serialize("b\xee\x80", opts));
235 EXPECT_ANY_THROW(folly::json::serialize("c\xef\xbf", opts));
238 EXPECT_ANY_THROW(folly::json::serialize("\xfe", opts));
239 EXPECT_ANY_THROW(folly::json::serialize("\xff", opts));
241 // Sample overlong sequences
242 EXPECT_ANY_THROW(folly::json::serialize("\xc0\xaf", opts));
243 EXPECT_ANY_THROW(folly::json::serialize("\xe0\x80\xaf", opts));
245 // Maximum overlong sequences
246 EXPECT_ANY_THROW(folly::json::serialize("\xc1\xbf", opts));
247 EXPECT_ANY_THROW(folly::json::serialize("\x30\x9f\xbf", opts));
249 // illegal code positions
250 EXPECT_ANY_THROW(folly::json::serialize("\xed\xa0\x80", opts));
251 EXPECT_ANY_THROW(folly::json::serialize("\xed\xbf\xbf", opts));
253 // Overlong representation of NUL character
254 EXPECT_ANY_THROW(folly::json::serialize("\xc0\x80", opts));
255 EXPECT_ANY_THROW(folly::json::serialize("\xe0\x80\x80", opts));
257 // Longer than 3 byte encodings
258 EXPECT_ANY_THROW(folly::json::serialize("\xf4\x8f\xbf\xbf", opts));
259 EXPECT_ANY_THROW(folly::json::serialize("\xed\xaf\xbf\xed\xbf\xbf", opts));
262 TEST(Json, UTF8Retention) {
264 // test retention with valid utf8 strings
265 folly::fbstring input = "\u2665";
266 folly::fbstring jsonInput = folly::toJson(input);
267 folly::fbstring output = folly::parseJson(jsonInput).asString();
268 folly::fbstring jsonOutput = folly::toJson(output);
270 EXPECT_EQ(input, output);
271 EXPECT_EQ(jsonInput, jsonOutput);
273 // test retention with invalid utf8 - note that non-ascii chars are retained
274 // as is, and no unicode encoding is attempted so no exception is thrown.
276 folly::toJson("a\xe0\xa0\x80z\xc0\x80"),
277 "\"a\xe0\xa0\x80z\xc0\x80\""
281 TEST(Json, UTF8EncodeNonAsciiRetention) {
283 folly::json::serialization_opts opts;
284 opts.encode_non_ascii = true;
286 // test encode_non_ascii valid utf8 strings
287 folly::fbstring input = "\u2665";
288 folly::fbstring jsonInput = folly::json::serialize(input, opts);
289 folly::fbstring output = folly::parseJson(jsonInput).asString();
290 folly::fbstring jsonOutput = folly::json::serialize(output, opts);
292 EXPECT_EQ(input, output);
293 EXPECT_EQ(jsonInput, jsonOutput);
295 // test encode_non_ascii with invalid utf8 - note that an attempt to encode
296 // non-ascii to unicode will result is a utf8 validation and throw exceptions.
297 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts));
298 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xe0\x80\x80", opts));
301 TEST(Json, UTF8Validation) {
302 folly::json::serialization_opts opts;
303 opts.validate_utf8 = true;
305 // test validate_utf8 valid utf8 strings - note that we only validate the
306 // for utf8 but don't encode non-ascii to unicode so they are retained as is.
307 EXPECT_EQ(folly::json::serialize("a\xc2\x80z", opts), "\"a\xc2\x80z\"");
309 folly::json::serialize("a\xe0\xa0\x80z", opts),
310 "\"a\xe0\xa0\x80z\"");
312 folly::json::serialize("a\xe0\xa0\x80m\xc2\x80z", opts),
313 "\"a\xe0\xa0\x80m\xc2\x80z\"");
315 // test validate_utf8 with invalid utf8
316 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts));
317 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xe0\x80\x80", opts));
319 opts.skip_invalid_utf8 = true;
320 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts),
321 "\"a\xe0\xa0\x80z\ufffd\ufffd\"");
322 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80\x80", opts),
323 "\"a\xe0\xa0\x80z\ufffd\ufffd\ufffd\"");
324 EXPECT_EQ(folly::json::serialize("z\xc0\x80z\xe0\xa0\x80", opts),
325 "\"z\ufffd\ufffdz\xe0\xa0\x80\"");
327 opts.encode_non_ascii = true;
328 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts),
329 "\"a\\u0800z\\ufffd\\ufffd\"");
330 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80\x80", opts),
331 "\"a\\u0800z\\ufffd\\ufffd\\ufffd\"");
332 EXPECT_EQ(folly::json::serialize("z\xc0\x80z\xe0\xa0\x80", opts),
333 "\"z\\ufffd\\ufffdz\\u0800\"");
338 TEST(Json, ParseNonStringKeys) {
340 EXPECT_EQ("a", parseJson("{\"a\":[]}").items().begin()->first.asString());
342 // check that we don't allow non-string keys as this violates the
343 // strict JSON spec (though it is emitted by the output of
344 // folly::dynamic with operator <<).
345 EXPECT_THROW(parseJson("{1:[]}"), std::runtime_error);
347 // check that we can parse colloquial JSON if the option is set
348 folly::json::serialization_opts opts;
349 opts.allow_non_string_keys = true;
351 auto val = parseJson("{1:[]}", opts);
352 EXPECT_EQ(1, val.items().begin()->first.asInt());
355 // test we can still read in strings
356 auto sval = parseJson("{\"a\":[]}", opts);
357 EXPECT_EQ("a", sval.items().begin()->first.asString());
359 // test we can read in doubles
360 auto dval = parseJson("{1.5:[]}", opts);
361 EXPECT_EQ(1.5, dval.items().begin()->first.asDouble());
364 TEST(Json, ParseDoubleFallback) {
366 EXPECT_THROW(parseJson("{\"a\":847605071342477600000000000000}"),
368 EXPECT_THROW(parseJson("{\"a\":-9223372036854775809}"),
370 EXPECT_THROW(parseJson("{\"a\":9223372036854775808}"),
372 EXPECT_EQ(std::numeric_limits<int64_t>::min(),
373 parseJson("{\"a\":-9223372036854775808}").items().begin()
375 EXPECT_EQ(std::numeric_limits<int64_t>::max(),
376 parseJson("{\"a\":9223372036854775807}").items().begin()->second.asInt());
377 // with double_fallback
378 folly::json::serialization_opts opts;
379 opts.double_fallback = true;
380 EXPECT_EQ(847605071342477600000000000000.0,
381 parseJson("{\"a\":847605071342477600000000000000}",
382 opts).items().begin()->second.asDouble());
383 EXPECT_EQ(847605071342477600000000000000.0,
384 parseJson("{\"a\": 847605071342477600000000000000}",
385 opts).items().begin()->second.asDouble());
386 EXPECT_EQ(847605071342477600000000000000.0,
387 parseJson("{\"a\":847605071342477600000000000000 }",
388 opts).items().begin()->second.asDouble());
389 EXPECT_EQ(847605071342477600000000000000.0,
390 parseJson("{\"a\": 847605071342477600000000000000 }",
391 opts).items().begin()->second.asDouble());
392 EXPECT_EQ(std::numeric_limits<int64_t>::min(),
393 parseJson("{\"a\":-9223372036854775808}",
394 opts).items().begin()->second.asInt());
395 EXPECT_EQ(std::numeric_limits<int64_t>::max(),
396 parseJson("{\"a\":9223372036854775807}",
397 opts).items().begin()->second.asInt());
398 // show that some precision gets lost
399 EXPECT_EQ(847605071342477612345678900000.0,
400 parseJson("{\"a\":847605071342477612345678912345}",
401 opts).items().begin()->second.asDouble());
404 TEST(Json, ParseNumbersAsStrings) {
405 folly::json::serialization_opts opts;
406 opts.parse_numbers_as_strings = true;
407 auto parse = [&](folly::fbstring number) {
408 return parseJson(number, opts).asString();
411 EXPECT_EQ("0", parse("0"));
412 EXPECT_EQ("1234", parse("1234"));
413 EXPECT_EQ("3.00", parse("3.00"));
414 EXPECT_EQ("3.14", parse("3.14"));
415 EXPECT_EQ("0.1234", parse("0.1234"));
416 EXPECT_EQ("0.0", parse("0.0"));
417 EXPECT_EQ("46845131213548676854213265486468451312135486768542132",
418 parse("46845131213548676854213265486468451312135486768542132"));
419 EXPECT_EQ("-468451312135486768542132654864684513121354867685.5e4",
420 parse("-468451312135486768542132654864684513121354867685.5e4"));
421 EXPECT_EQ("6.62607004e-34", parse("6.62607004e-34"));
422 EXPECT_EQ("6.62607004E+34", parse("6.62607004E+34"));
423 EXPECT_EQ("Infinity", parse("Infinity"));
424 EXPECT_EQ("-Infinity", parse("-Infinity"));
425 EXPECT_EQ("NaN", parse("NaN"));
427 EXPECT_THROW(parse("ThisIsWrong"), std::runtime_error);
428 EXPECT_THROW(parse("34-2"), std::runtime_error);
429 EXPECT_THROW(parse(""), std::runtime_error);
430 EXPECT_THROW(parse("-"), std::runtime_error);
431 EXPECT_THROW(parse("34-e2"), std::runtime_error);
432 EXPECT_THROW(parse("34e2.4"), std::runtime_error);
433 EXPECT_THROW(parse("infinity"), std::runtime_error);
434 EXPECT_THROW(parse("nan"), std::runtime_error);
437 TEST(Json, SortKeys) {
438 folly::json::serialization_opts opts_on, opts_off;
439 opts_on.sort_keys = true;
440 opts_off.sort_keys = false;
442 dynamic value = dynamic::object
448 dynamic::object("a", "b")
458 std::string sorted_keys =
459 R"({"a":[{"a":"b","c":"d"},12.5,"Yo Dawg",["heh"],null],)"
460 R"("another":32.2,"foo":"bar","junk":12})";
462 EXPECT_EQ(value, parseJson(folly::json::serialize(value, opts_on)));
463 EXPECT_EQ(value, parseJson(folly::json::serialize(value, opts_off)));
465 EXPECT_EQ(sorted_keys, folly::json::serialize(value, opts_on));
468 int main(int argc, char** argv) {
469 testing::InitGoogleTest(&argc, argv);
470 gflags::ParseCommandLineFlags(&argc, &argv, true);
471 return RUN_ALL_TESTS();