2 * Copyright 2016 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.
19 #include <boost/next_prior.hpp>
20 #include <folly/json.h>
21 #include <gtest/gtest.h>
24 using folly::parseJson;
28 auto val = parseJson("\"I \u2665 UTF-8\"");
29 EXPECT_EQ("I \u2665 UTF-8", val.asString());
30 val = parseJson("\"I \\u2665 UTF-8\"");
31 EXPECT_EQ("I \u2665 UTF-8", val.asString());
32 val = parseJson("\"I \U0001D11E playing in G-clef\"");
33 EXPECT_EQ("I \U0001D11E playing in G-clef", val.asString());
35 val = parseJson("\"I \\uD834\\uDD1E playing in G-clef\"");
36 EXPECT_EQ("I \U0001D11E playing in G-clef", val.asString());
40 auto num = parseJson("12");
41 EXPECT_TRUE(num.isInt());
43 num = parseJson("12e5");
44 EXPECT_TRUE(num.isDouble());
46 auto numAs1 = num.asDouble();
47 EXPECT_EQ(numAs1, 12e5);
49 EXPECT_EQ(num, 1200000);
51 auto largeNumber = parseJson("4611686018427387904");
52 EXPECT_TRUE(largeNumber.isInt());
53 EXPECT_EQ(largeNumber, 4611686018427387904L);
55 auto negative = parseJson("-123");
56 EXPECT_EQ(negative, -123);
58 auto bfalse = parseJson("false");
59 auto btrue = parseJson("true");
60 EXPECT_EQ(bfalse, false);
61 EXPECT_EQ(btrue, true);
63 auto null = parseJson("null");
64 EXPECT_TRUE(null == nullptr);
66 auto doub1 = parseJson("12.0");
67 auto doub2 = parseJson("12e2");
68 EXPECT_EQ(doub1, 12.0);
69 EXPECT_EQ(doub2, 12e2);
70 EXPECT_EQ(std::numeric_limits<double>::infinity(),
71 parseJson("Infinity").asDouble());
72 EXPECT_EQ(-std::numeric_limits<double>::infinity(),
73 parseJson("-Infinity").asDouble());
74 EXPECT_TRUE(std::isnan(parseJson("NaN").asDouble()));
77 EXPECT_THROW(parseJson("infinity"), std::runtime_error);
78 EXPECT_THROW(parseJson("inf"), std::runtime_error);
79 EXPECT_THROW(parseJson("Inf"), std::runtime_error);
80 EXPECT_THROW(parseJson("INF"), std::runtime_error);
81 EXPECT_THROW(parseJson("nan"), std::runtime_error);
82 EXPECT_THROW(parseJson("NAN"), std::runtime_error);
84 auto array = parseJson(
85 "[12,false, false , null , [12e4,32, [], 12]]");
86 EXPECT_EQ(array.size(), 5);
87 if (array.size() == 5) {
88 EXPECT_EQ(boost::prior(array.end())->size(), 4);
91 EXPECT_THROW(parseJson("\n[12,\n\nnotvalidjson"),
94 EXPECT_THROW(parseJson("12e2e2"),
97 EXPECT_THROW(parseJson("{\"foo\":12,\"bar\":42} \"something\""),
100 dynamic value = dynamic::object
106 dynamic::object("a", "b")
116 // Print then parse and get the same thing, hopefully.
117 EXPECT_EQ(value, parseJson(toJson(value)));
120 // Test an object with non-string values.
121 dynamic something = parseJson(
122 "{\"old_value\":40,\"changed\":true,\"opened\":false}");
123 dynamic expected = dynamic::object
127 EXPECT_EQ(something, expected);
130 TEST(Json, ParseTrailingComma) {
131 folly::json::serialization_opts on, off;
132 on.allow_trailing_comma = true;
133 off.allow_trailing_comma = false;
135 dynamic arr { 1, 2 };
136 EXPECT_EQ(arr, parseJson("[1, 2]", on));
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_THROW(parseJson("[1, 2,]", off), std::runtime_error);
143 dynamic obj = dynamic::object("a", 1);
144 EXPECT_EQ(obj, parseJson("{\"a\": 1}", on));
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_THROW(parseJson("{\"a\":1,}", off), std::runtime_error);
152 TEST(Json, BoolConversion) {
153 EXPECT_TRUE(parseJson("42").asBool());
156 TEST(Json, JavascriptSafe) {
157 auto badDouble = (1ll << 63ll) + 1;
158 dynamic badDyn = badDouble;
159 EXPECT_EQ(folly::toJson(badDouble), folly::to<folly::fbstring>(badDouble));
160 folly::json::serialization_opts opts;
161 opts.javascript_safe = true;
162 EXPECT_ANY_THROW(folly::json::serialize(badDouble, opts));
164 auto okDouble = 1ll << 63ll;
165 dynamic okDyn = okDouble;
166 EXPECT_EQ(folly::toJson(okDouble), folly::to<folly::fbstring>(okDouble));
169 TEST(Json, Produce) {
170 auto value = parseJson(R"( "f\"oo" )");
171 EXPECT_EQ(toJson(value), R"("f\"oo")");
172 value = parseJson("\"Control code: \001 \002 \x1f\"");
173 EXPECT_EQ(toJson(value), R"("Control code: \u0001 \u0002 \u001f")");
175 // We're not allowed to have non-string keys in json.
176 EXPECT_THROW(toJson(dynamic::object("abc", "xyz")(42.33, "asd")),
179 // Check Infinity/Nan
180 folly::json::serialization_opts opts;
181 opts.allow_nan_inf = true;
182 EXPECT_EQ("Infinity",
183 folly::json::serialize(parseJson("Infinity"), opts).toStdString());
185 folly::json::serialize(parseJson("NaN"), opts).toStdString());
188 TEST(Json, JsonEscape) {
189 folly::json::serialization_opts opts;
191 folly::json::serialize("\b\f\n\r\x01\t\\\"/\v\a", opts),
192 R"("\b\f\n\r\u0001\t\\\"/\u000b\u0007")");
195 TEST(Json, JsonNonAsciiEncoding) {
196 folly::json::serialization_opts opts;
197 opts.encode_non_ascii = true;
200 EXPECT_EQ(folly::json::serialize("\x1f", opts), R"("\u001f")");
201 EXPECT_EQ(folly::json::serialize("\xc2\xa2", opts), R"("\u00a2")");
202 EXPECT_EQ(folly::json::serialize("\xe2\x82\xac", opts), R"("\u20ac")");
204 // multiple unicode encodings
206 folly::json::serialize("\x1f\xe2\x82\xac", opts),
207 R"("\u001f\u20ac")");
209 folly::json::serialize("\x1f\xc2\xa2\xe2\x82\xac", opts),
210 R"("\u001f\u00a2\u20ac")");
212 folly::json::serialize("\xc2\x80\xef\xbf\xbf", opts),
213 R"("\u0080\uffff")");
215 folly::json::serialize("\xe0\xa0\x80\xdf\xbf", opts),
216 R"("\u0800\u07ff")");
218 // first possible sequence of a certain length
219 EXPECT_EQ(folly::json::serialize("\xc2\x80", opts), R"("\u0080")");
220 EXPECT_EQ(folly::json::serialize("\xe0\xa0\x80", opts), R"("\u0800")");
222 // last possible sequence of a certain length
223 EXPECT_EQ(folly::json::serialize("\xdf\xbf", opts), R"("\u07ff")");
224 EXPECT_EQ(folly::json::serialize("\xef\xbf\xbf", opts), R"("\uffff")");
226 // other boundary conditions
227 EXPECT_EQ(folly::json::serialize("\xed\x9f\xbf", opts), R"("\ud7ff")");
228 EXPECT_EQ(folly::json::serialize("\xee\x80\x80", opts), R"("\ue000")");
229 EXPECT_EQ(folly::json::serialize("\xef\xbf\xbd", opts), R"("\ufffd")");
231 // incomplete sequences
232 EXPECT_ANY_THROW(folly::json::serialize("a\xed\x9f", opts));
233 EXPECT_ANY_THROW(folly::json::serialize("b\xee\x80", opts));
234 EXPECT_ANY_THROW(folly::json::serialize("c\xef\xbf", opts));
237 EXPECT_ANY_THROW(folly::json::serialize("\xfe", opts));
238 EXPECT_ANY_THROW(folly::json::serialize("\xff", opts));
240 // Sample overlong sequences
241 EXPECT_ANY_THROW(folly::json::serialize("\xc0\xaf", opts));
242 EXPECT_ANY_THROW(folly::json::serialize("\xe0\x80\xaf", opts));
244 // Maximum overlong sequences
245 EXPECT_ANY_THROW(folly::json::serialize("\xc1\xbf", opts));
246 EXPECT_ANY_THROW(folly::json::serialize("\x30\x9f\xbf", opts));
248 // illegal code positions
249 EXPECT_ANY_THROW(folly::json::serialize("\xed\xa0\x80", opts));
250 EXPECT_ANY_THROW(folly::json::serialize("\xed\xbf\xbf", opts));
252 // Overlong representation of NUL character
253 EXPECT_ANY_THROW(folly::json::serialize("\xc0\x80", opts));
254 EXPECT_ANY_THROW(folly::json::serialize("\xe0\x80\x80", opts));
256 // Longer than 3 byte encodings
257 EXPECT_ANY_THROW(folly::json::serialize("\xf4\x8f\xbf\xbf", opts));
258 EXPECT_ANY_THROW(folly::json::serialize("\xed\xaf\xbf\xed\xbf\xbf", opts));
261 TEST(Json, UTF8Retention) {
263 // test retention with valid utf8 strings
264 folly::fbstring input = "\u2665";
265 folly::fbstring jsonInput = folly::toJson(input);
266 folly::fbstring output = folly::parseJson(jsonInput).asString();
267 folly::fbstring jsonOutput = folly::toJson(output);
269 EXPECT_EQ(input, output);
270 EXPECT_EQ(jsonInput, jsonOutput);
272 // test retention with invalid utf8 - note that non-ascii chars are retained
273 // as is, and no unicode encoding is attempted so no exception is thrown.
275 folly::toJson("a\xe0\xa0\x80z\xc0\x80"),
276 "\"a\xe0\xa0\x80z\xc0\x80\""
280 TEST(Json, UTF8EncodeNonAsciiRetention) {
282 folly::json::serialization_opts opts;
283 opts.encode_non_ascii = true;
285 // test encode_non_ascii valid utf8 strings
286 folly::fbstring input = "\u2665";
287 folly::fbstring jsonInput = folly::json::serialize(input, opts);
288 folly::fbstring output = folly::parseJson(jsonInput).asString();
289 folly::fbstring jsonOutput = folly::json::serialize(output, opts);
291 EXPECT_EQ(input, output);
292 EXPECT_EQ(jsonInput, jsonOutput);
294 // test encode_non_ascii with invalid utf8 - note that an attempt to encode
295 // non-ascii to unicode will result is a utf8 validation and throw exceptions.
296 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts));
297 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xe0\x80\x80", opts));
300 TEST(Json, UTF8Validation) {
301 folly::json::serialization_opts opts;
302 opts.validate_utf8 = true;
304 // test validate_utf8 valid utf8 strings - note that we only validate the
305 // for utf8 but don't encode non-ascii to unicode so they are retained as is.
306 EXPECT_EQ(folly::json::serialize("a\xc2\x80z", opts), "\"a\xc2\x80z\"");
308 folly::json::serialize("a\xe0\xa0\x80z", opts),
309 "\"a\xe0\xa0\x80z\"");
311 folly::json::serialize("a\xe0\xa0\x80m\xc2\x80z", opts),
312 "\"a\xe0\xa0\x80m\xc2\x80z\"");
314 // test validate_utf8 with invalid utf8
315 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts));
316 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xe0\x80\x80", opts));
318 opts.skip_invalid_utf8 = true;
319 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts),
320 "\"a\xe0\xa0\x80z\ufffd\ufffd\"");
321 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80\x80", opts),
322 "\"a\xe0\xa0\x80z\ufffd\ufffd\ufffd\"");
323 EXPECT_EQ(folly::json::serialize("z\xc0\x80z\xe0\xa0\x80", opts),
324 "\"z\ufffd\ufffdz\xe0\xa0\x80\"");
326 opts.encode_non_ascii = true;
327 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts),
328 "\"a\\u0800z\\ufffd\\ufffd\"");
329 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80\x80", opts),
330 "\"a\\u0800z\\ufffd\\ufffd\\ufffd\"");
331 EXPECT_EQ(folly::json::serialize("z\xc0\x80z\xe0\xa0\x80", opts),
332 "\"z\\ufffd\\ufffdz\\u0800\"");
337 TEST(Json, ParseNonStringKeys) {
339 EXPECT_EQ("a", parseJson("{\"a\":[]}").items().begin()->first.asString());
341 // check that we don't allow non-string keys as this violates the
342 // strict JSON spec (though it is emitted by the output of
343 // folly::dynamic with operator <<).
344 EXPECT_THROW(parseJson("{1:[]}"), std::runtime_error);
346 // check that we can parse colloquial JSON if the option is set
347 folly::json::serialization_opts opts;
348 opts.allow_non_string_keys = true;
350 auto val = parseJson("{1:[]}", opts);
351 EXPECT_EQ(1, val.items().begin()->first.asInt());
354 // test we can still read in strings
355 auto sval = parseJson("{\"a\":[]}", opts);
356 EXPECT_EQ("a", sval.items().begin()->first.asString());
358 // test we can read in doubles
359 auto dval = parseJson("{1.5:[]}", opts);
360 EXPECT_EQ(1.5, dval.items().begin()->first.asDouble());
363 TEST(Json, ParseDoubleFallback) {
365 EXPECT_THROW(parseJson("{\"a\":847605071342477600000000000000}"),
367 EXPECT_THROW(parseJson("{\"a\":-9223372036854775809}"),
369 EXPECT_THROW(parseJson("{\"a\":9223372036854775808}"),
371 EXPECT_EQ(std::numeric_limits<int64_t>::min(),
372 parseJson("{\"a\":-9223372036854775808}").items().begin()
374 EXPECT_EQ(std::numeric_limits<int64_t>::max(),
375 parseJson("{\"a\":9223372036854775807}").items().begin()->second.asInt());
376 // with double_fallback
377 folly::json::serialization_opts opts;
378 opts.double_fallback = true;
379 EXPECT_EQ(847605071342477600000000000000.0,
380 parseJson("{\"a\":847605071342477600000000000000}",
381 opts).items().begin()->second.asDouble());
382 EXPECT_EQ(847605071342477600000000000000.0,
383 parseJson("{\"a\": 847605071342477600000000000000}",
384 opts).items().begin()->second.asDouble());
385 EXPECT_EQ(847605071342477600000000000000.0,
386 parseJson("{\"a\":847605071342477600000000000000 }",
387 opts).items().begin()->second.asDouble());
388 EXPECT_EQ(847605071342477600000000000000.0,
389 parseJson("{\"a\": 847605071342477600000000000000 }",
390 opts).items().begin()->second.asDouble());
391 EXPECT_EQ(std::numeric_limits<int64_t>::min(),
392 parseJson("{\"a\":-9223372036854775808}",
393 opts).items().begin()->second.asInt());
394 EXPECT_EQ(std::numeric_limits<int64_t>::max(),
395 parseJson("{\"a\":9223372036854775807}",
396 opts).items().begin()->second.asInt());
397 // show that some precision gets lost
398 EXPECT_EQ(847605071342477612345678900000.0,
399 parseJson("{\"a\":847605071342477612345678912345}",
400 opts).items().begin()->second.asDouble());
403 TEST(Json, ParseNumbersAsStrings) {
404 folly::json::serialization_opts opts;
405 opts.parse_numbers_as_strings = true;
406 auto parse = [&](folly::fbstring number) {
407 return parseJson(number, opts).asString();
410 EXPECT_EQ("0", parse("0"));
411 EXPECT_EQ("1234", parse("1234"));
412 EXPECT_EQ("3.00", parse("3.00"));
413 EXPECT_EQ("3.14", parse("3.14"));
414 EXPECT_EQ("0.1234", parse("0.1234"));
415 EXPECT_EQ("0.0", parse("0.0"));
416 EXPECT_EQ("46845131213548676854213265486468451312135486768542132",
417 parse("46845131213548676854213265486468451312135486768542132"));
418 EXPECT_EQ("-468451312135486768542132654864684513121354867685.5e4",
419 parse("-468451312135486768542132654864684513121354867685.5e4"));
420 EXPECT_EQ("6.62607004e-34", parse("6.62607004e-34"));
421 EXPECT_EQ("6.62607004E+34", parse("6.62607004E+34"));
422 EXPECT_EQ("Infinity", parse("Infinity"));
423 EXPECT_EQ("-Infinity", parse("-Infinity"));
424 EXPECT_EQ("NaN", parse("NaN"));
426 EXPECT_THROW(parse("ThisIsWrong"), std::runtime_error);
427 EXPECT_THROW(parse("34-2"), std::runtime_error);
428 EXPECT_THROW(parse(""), std::runtime_error);
429 EXPECT_THROW(parse("-"), std::runtime_error);
430 EXPECT_THROW(parse("34-e2"), std::runtime_error);
431 EXPECT_THROW(parse("34e2.4"), std::runtime_error);
432 EXPECT_THROW(parse("infinity"), std::runtime_error);
433 EXPECT_THROW(parse("nan"), std::runtime_error);
436 TEST(Json, SortKeys) {
437 folly::json::serialization_opts opts_on, opts_off;
438 opts_on.sort_keys = true;
439 opts_off.sort_keys = false;
441 dynamic value = dynamic::object
447 dynamic::object("a", "b")
457 std::string sorted_keys =
458 R"({"a":[{"a":"b","c":"d"},12.5,"Yo Dawg",["heh"],null],)"
459 R"("another":32.2,"foo":"bar","junk":12})";
461 EXPECT_EQ(value, parseJson(folly::json::serialize(value, opts_on)));
462 EXPECT_EQ(value, parseJson(folly::json::serialize(value, opts_off)));
464 EXPECT_EQ(sorted_keys, folly::json::serialize(value, opts_on));
467 TEST(Json, PrintTo) {
468 std::ostringstream oss;
470 dynamic value = dynamic::object
474 (true, false) // include non-string keys
485 dynamic::object("a", "b")
495 std::string expected =
520 PrintTo(value, &oss);
521 EXPECT_EQ(expected, oss.str());