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.
18 #include <boost/next_prior.hpp>
19 #include <folly/json.h>
20 #include <gtest/gtest.h>
23 using folly::parseJson;
27 auto val = parseJson("\"I \u2665 UTF-8\"");
28 EXPECT_EQ("I \u2665 UTF-8", val.asString());
29 val = parseJson("\"I \\u2665 UTF-8\"");
30 EXPECT_EQ("I \u2665 UTF-8", val.asString());
31 val = parseJson("\"I \U0001D11E playing in G-clef\"");
32 EXPECT_EQ("I \U0001D11E playing in G-clef", val.asString());
34 val = parseJson("\"I \\uD834\\uDD1E playing in G-clef\"");
35 EXPECT_EQ("I \U0001D11E playing in G-clef", val.asString());
39 auto num = parseJson("12");
40 EXPECT_TRUE(num.isInt());
42 num = parseJson("12e5");
43 EXPECT_TRUE(num.isDouble());
45 auto numAs1 = num.asDouble();
46 EXPECT_EQ(numAs1, 12e5);
48 EXPECT_EQ(num, 1200000);
50 auto largeNumber = parseJson("4611686018427387904");
51 EXPECT_TRUE(largeNumber.isInt());
52 EXPECT_EQ(largeNumber, 4611686018427387904L);
54 auto negative = parseJson("-123");
55 EXPECT_EQ(negative, -123);
57 auto bfalse = parseJson("false");
58 auto btrue = parseJson("true");
59 EXPECT_EQ(bfalse, false);
60 EXPECT_EQ(btrue, true);
62 auto null = parseJson("null");
63 EXPECT_TRUE(null == nullptr);
65 auto doub1 = parseJson("12.0");
66 auto doub2 = parseJson("12e2");
67 EXPECT_EQ(doub1, 12.0);
68 EXPECT_EQ(doub2, 12e2);
69 EXPECT_EQ(std::numeric_limits<double>::infinity(),
70 parseJson("Infinity").asDouble());
71 EXPECT_EQ(-std::numeric_limits<double>::infinity(),
72 parseJson("-Infinity").asDouble());
73 EXPECT_TRUE(std::isnan(parseJson("NaN").asDouble()));
76 EXPECT_THROW(parseJson("infinity"), std::runtime_error);
77 EXPECT_THROW(parseJson("inf"), std::runtime_error);
78 EXPECT_THROW(parseJson("Inf"), std::runtime_error);
79 EXPECT_THROW(parseJson("INF"), std::runtime_error);
80 EXPECT_THROW(parseJson("nan"), std::runtime_error);
81 EXPECT_THROW(parseJson("NAN"), std::runtime_error);
83 auto array = parseJson(
84 "[12,false, false , null , [12e4,32, [], 12]]");
85 EXPECT_EQ(array.size(), 5);
86 if (array.size() == 5) {
87 EXPECT_EQ(boost::prior(array.end())->size(), 4);
90 EXPECT_THROW(parseJson("\n[12,\n\nnotvalidjson"),
93 EXPECT_THROW(parseJson("12e2e2"),
96 EXPECT_THROW(parseJson("{\"foo\":12,\"bar\":42} \"something\""),
99 dynamic value = dynamic::object
105 dynamic::object("a", "b")
115 // Print then parse and get the same thing, hopefully.
116 EXPECT_EQ(value, parseJson(toJson(value)));
119 // Test an object with non-string values.
120 dynamic something = parseJson(
121 "{\"old_value\":40,\"changed\":true,\"opened\":false}");
122 dynamic expected = dynamic::object
126 EXPECT_EQ(something, expected);
129 TEST(Json, ParseTrailingComma) {
130 folly::json::serialization_opts on, off;
131 on.allow_trailing_comma = true;
132 off.allow_trailing_comma = false;
134 dynamic arr { 1, 2 };
135 EXPECT_EQ(arr, parseJson("[1, 2]", on));
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_THROW(parseJson("[1, 2,]", off), std::runtime_error);
142 dynamic obj = dynamic::object("a", 1);
143 EXPECT_EQ(obj, parseJson("{\"a\": 1}", on));
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_THROW(parseJson("{\"a\":1,}", off), std::runtime_error);
151 TEST(Json, BoolConversion) {
152 EXPECT_TRUE(parseJson("42").asBool());
155 TEST(Json, JavascriptSafe) {
156 auto badDouble = (1ll << 63ll) + 1;
157 dynamic badDyn = badDouble;
158 EXPECT_EQ(folly::toJson(badDouble), folly::to<folly::fbstring>(badDouble));
159 folly::json::serialization_opts opts;
160 opts.javascript_safe = true;
161 EXPECT_ANY_THROW(folly::json::serialize(badDouble, opts));
163 auto okDouble = 1ll << 63ll;
164 dynamic okDyn = okDouble;
165 EXPECT_EQ(folly::toJson(okDouble), folly::to<folly::fbstring>(okDouble));
168 TEST(Json, Produce) {
169 auto value = parseJson(R"( "f\"oo" )");
170 EXPECT_EQ(toJson(value), R"("f\"oo")");
171 value = parseJson("\"Control code: \001 \002 \x1f\"");
172 EXPECT_EQ(toJson(value), R"("Control code: \u0001 \u0002 \u001f")");
174 // We're not allowed to have non-string keys in json.
175 EXPECT_THROW(toJson(dynamic::object("abc", "xyz")(42.33, "asd")),
178 // Check Infinity/Nan
179 folly::json::serialization_opts opts;
180 opts.allow_nan_inf = true;
181 EXPECT_EQ("Infinity",
182 folly::json::serialize(parseJson("Infinity"), opts).toStdString());
184 folly::json::serialize(parseJson("NaN"), opts).toStdString());
187 TEST(Json, JsonEscape) {
188 folly::json::serialization_opts opts;
190 folly::json::serialize("\b\f\n\r\x01\t\\\"/\v\a", opts),
191 R"("\b\f\n\r\u0001\t\\\"/\u000b\u0007")");
194 TEST(Json, JsonNonAsciiEncoding) {
195 folly::json::serialization_opts opts;
196 opts.encode_non_ascii = true;
199 EXPECT_EQ(folly::json::serialize("\x1f", opts), R"("\u001f")");
200 EXPECT_EQ(folly::json::serialize("\xc2\xa2", opts), R"("\u00a2")");
201 EXPECT_EQ(folly::json::serialize("\xe2\x82\xac", opts), R"("\u20ac")");
203 // multiple unicode encodings
205 folly::json::serialize("\x1f\xe2\x82\xac", opts),
206 R"("\u001f\u20ac")");
208 folly::json::serialize("\x1f\xc2\xa2\xe2\x82\xac", opts),
209 R"("\u001f\u00a2\u20ac")");
211 folly::json::serialize("\xc2\x80\xef\xbf\xbf", opts),
212 R"("\u0080\uffff")");
214 folly::json::serialize("\xe0\xa0\x80\xdf\xbf", opts),
215 R"("\u0800\u07ff")");
217 // first possible sequence of a certain length
218 EXPECT_EQ(folly::json::serialize("\xc2\x80", opts), R"("\u0080")");
219 EXPECT_EQ(folly::json::serialize("\xe0\xa0\x80", opts), R"("\u0800")");
221 // last possible sequence of a certain length
222 EXPECT_EQ(folly::json::serialize("\xdf\xbf", opts), R"("\u07ff")");
223 EXPECT_EQ(folly::json::serialize("\xef\xbf\xbf", opts), R"("\uffff")");
225 // other boundary conditions
226 EXPECT_EQ(folly::json::serialize("\xed\x9f\xbf", opts), R"("\ud7ff")");
227 EXPECT_EQ(folly::json::serialize("\xee\x80\x80", opts), R"("\ue000")");
228 EXPECT_EQ(folly::json::serialize("\xef\xbf\xbd", opts), R"("\ufffd")");
230 // incomplete sequences
231 EXPECT_ANY_THROW(folly::json::serialize("a\xed\x9f", opts));
232 EXPECT_ANY_THROW(folly::json::serialize("b\xee\x80", opts));
233 EXPECT_ANY_THROW(folly::json::serialize("c\xef\xbf", opts));
236 EXPECT_ANY_THROW(folly::json::serialize("\xfe", opts));
237 EXPECT_ANY_THROW(folly::json::serialize("\xff", opts));
239 // Sample overlong sequences
240 EXPECT_ANY_THROW(folly::json::serialize("\xc0\xaf", opts));
241 EXPECT_ANY_THROW(folly::json::serialize("\xe0\x80\xaf", opts));
243 // Maximum overlong sequences
244 EXPECT_ANY_THROW(folly::json::serialize("\xc1\xbf", opts));
245 EXPECT_ANY_THROW(folly::json::serialize("\x30\x9f\xbf", opts));
247 // illegal code positions
248 EXPECT_ANY_THROW(folly::json::serialize("\xed\xa0\x80", opts));
249 EXPECT_ANY_THROW(folly::json::serialize("\xed\xbf\xbf", opts));
251 // Overlong representation of NUL character
252 EXPECT_ANY_THROW(folly::json::serialize("\xc0\x80", opts));
253 EXPECT_ANY_THROW(folly::json::serialize("\xe0\x80\x80", opts));
255 // Longer than 3 byte encodings
256 EXPECT_ANY_THROW(folly::json::serialize("\xf4\x8f\xbf\xbf", opts));
257 EXPECT_ANY_THROW(folly::json::serialize("\xed\xaf\xbf\xed\xbf\xbf", opts));
260 TEST(Json, UTF8Retention) {
262 // test retention with valid utf8 strings
263 folly::fbstring input = "\u2665";
264 folly::fbstring jsonInput = folly::toJson(input);
265 folly::fbstring output = folly::parseJson(jsonInput).asString();
266 folly::fbstring jsonOutput = folly::toJson(output);
268 EXPECT_EQ(input, output);
269 EXPECT_EQ(jsonInput, jsonOutput);
271 // test retention with invalid utf8 - note that non-ascii chars are retained
272 // as is, and no unicode encoding is attempted so no exception is thrown.
274 folly::toJson("a\xe0\xa0\x80z\xc0\x80"),
275 "\"a\xe0\xa0\x80z\xc0\x80\""
279 TEST(Json, UTF8EncodeNonAsciiRetention) {
281 folly::json::serialization_opts opts;
282 opts.encode_non_ascii = true;
284 // test encode_non_ascii valid utf8 strings
285 folly::fbstring input = "\u2665";
286 folly::fbstring jsonInput = folly::json::serialize(input, opts);
287 folly::fbstring output = folly::parseJson(jsonInput).asString();
288 folly::fbstring jsonOutput = folly::json::serialize(output, opts);
290 EXPECT_EQ(input, output);
291 EXPECT_EQ(jsonInput, jsonOutput);
293 // test encode_non_ascii with invalid utf8 - note that an attempt to encode
294 // non-ascii to unicode will result is a utf8 validation and throw exceptions.
295 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts));
296 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xe0\x80\x80", opts));
299 TEST(Json, UTF8Validation) {
300 folly::json::serialization_opts opts;
301 opts.validate_utf8 = true;
303 // test validate_utf8 valid utf8 strings - note that we only validate the
304 // for utf8 but don't encode non-ascii to unicode so they are retained as is.
305 EXPECT_EQ(folly::json::serialize("a\xc2\x80z", opts), "\"a\xc2\x80z\"");
307 folly::json::serialize("a\xe0\xa0\x80z", opts),
308 "\"a\xe0\xa0\x80z\"");
310 folly::json::serialize("a\xe0\xa0\x80m\xc2\x80z", opts),
311 "\"a\xe0\xa0\x80m\xc2\x80z\"");
313 // test validate_utf8 with invalid utf8
314 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts));
315 EXPECT_ANY_THROW(folly::json::serialize("a\xe0\xa0\x80z\xe0\x80\x80", opts));
317 opts.skip_invalid_utf8 = true;
318 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts),
319 "\"a\xe0\xa0\x80z\ufffd\ufffd\"");
320 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80\x80", opts),
321 "\"a\xe0\xa0\x80z\ufffd\ufffd\ufffd\"");
322 EXPECT_EQ(folly::json::serialize("z\xc0\x80z\xe0\xa0\x80", opts),
323 "\"z\ufffd\ufffdz\xe0\xa0\x80\"");
325 opts.encode_non_ascii = true;
326 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80", opts),
327 "\"a\\u0800z\\ufffd\\ufffd\"");
328 EXPECT_EQ(folly::json::serialize("a\xe0\xa0\x80z\xc0\x80\x80", opts),
329 "\"a\\u0800z\\ufffd\\ufffd\\ufffd\"");
330 EXPECT_EQ(folly::json::serialize("z\xc0\x80z\xe0\xa0\x80", opts),
331 "\"z\\ufffd\\ufffdz\\u0800\"");
336 TEST(Json, ParseNonStringKeys) {
338 EXPECT_EQ("a", parseJson("{\"a\":[]}").items().begin()->first.asString());
340 // check that we don't allow non-string keys as this violates the
341 // strict JSON spec (though it is emitted by the output of
342 // folly::dynamic with operator <<).
343 EXPECT_THROW(parseJson("{1:[]}"), std::runtime_error);
345 // check that we can parse colloquial JSON if the option is set
346 folly::json::serialization_opts opts;
347 opts.allow_non_string_keys = true;
349 auto val = parseJson("{1:[]}", opts);
350 EXPECT_EQ(1, val.items().begin()->first.asInt());
353 // test we can still read in strings
354 auto sval = parseJson("{\"a\":[]}", opts);
355 EXPECT_EQ("a", sval.items().begin()->first.asString());
357 // test we can read in doubles
358 auto dval = parseJson("{1.5:[]}", opts);
359 EXPECT_EQ(1.5, dval.items().begin()->first.asDouble());
362 TEST(Json, ParseDoubleFallback) {
364 EXPECT_THROW(parseJson("{\"a\":847605071342477600000000000000}"),
366 EXPECT_THROW(parseJson("{\"a\":-9223372036854775809}"),
368 EXPECT_THROW(parseJson("{\"a\":9223372036854775808}"),
370 EXPECT_EQ(std::numeric_limits<int64_t>::min(),
371 parseJson("{\"a\":-9223372036854775808}").items().begin()
373 EXPECT_EQ(std::numeric_limits<int64_t>::max(),
374 parseJson("{\"a\":9223372036854775807}").items().begin()->second.asInt());
375 // with double_fallback
376 folly::json::serialization_opts opts;
377 opts.double_fallback = true;
378 EXPECT_EQ(847605071342477600000000000000.0,
379 parseJson("{\"a\":847605071342477600000000000000}",
380 opts).items().begin()->second.asDouble());
381 EXPECT_EQ(847605071342477600000000000000.0,
382 parseJson("{\"a\": 847605071342477600000000000000}",
383 opts).items().begin()->second.asDouble());
384 EXPECT_EQ(847605071342477600000000000000.0,
385 parseJson("{\"a\":847605071342477600000000000000 }",
386 opts).items().begin()->second.asDouble());
387 EXPECT_EQ(847605071342477600000000000000.0,
388 parseJson("{\"a\": 847605071342477600000000000000 }",
389 opts).items().begin()->second.asDouble());
390 EXPECT_EQ(std::numeric_limits<int64_t>::min(),
391 parseJson("{\"a\":-9223372036854775808}",
392 opts).items().begin()->second.asInt());
393 EXPECT_EQ(std::numeric_limits<int64_t>::max(),
394 parseJson("{\"a\":9223372036854775807}",
395 opts).items().begin()->second.asInt());
396 // show that some precision gets lost
397 EXPECT_EQ(847605071342477612345678900000.0,
398 parseJson("{\"a\":847605071342477612345678912345}",
399 opts).items().begin()->second.asDouble());
402 TEST(Json, ParseNumbersAsStrings) {
403 folly::json::serialization_opts opts;
404 opts.parse_numbers_as_strings = true;
405 auto parse = [&](folly::fbstring number) {
406 return parseJson(number, opts).asString();
409 EXPECT_EQ("0", parse("0"));
410 EXPECT_EQ("1234", parse("1234"));
411 EXPECT_EQ("3.00", parse("3.00"));
412 EXPECT_EQ("3.14", parse("3.14"));
413 EXPECT_EQ("0.1234", parse("0.1234"));
414 EXPECT_EQ("0.0", parse("0.0"));
415 EXPECT_EQ("46845131213548676854213265486468451312135486768542132",
416 parse("46845131213548676854213265486468451312135486768542132"));
417 EXPECT_EQ("-468451312135486768542132654864684513121354867685.5e4",
418 parse("-468451312135486768542132654864684513121354867685.5e4"));
419 EXPECT_EQ("6.62607004e-34", parse("6.62607004e-34"));
420 EXPECT_EQ("6.62607004E+34", parse("6.62607004E+34"));
421 EXPECT_EQ("Infinity", parse("Infinity"));
422 EXPECT_EQ("-Infinity", parse("-Infinity"));
423 EXPECT_EQ("NaN", parse("NaN"));
425 EXPECT_THROW(parse("ThisIsWrong"), std::runtime_error);
426 EXPECT_THROW(parse("34-2"), std::runtime_error);
427 EXPECT_THROW(parse(""), std::runtime_error);
428 EXPECT_THROW(parse("-"), std::runtime_error);
429 EXPECT_THROW(parse("34-e2"), std::runtime_error);
430 EXPECT_THROW(parse("34e2.4"), std::runtime_error);
431 EXPECT_THROW(parse("infinity"), std::runtime_error);
432 EXPECT_THROW(parse("nan"), std::runtime_error);
435 TEST(Json, SortKeys) {
436 folly::json::serialization_opts opts_on, opts_off;
437 opts_on.sort_keys = true;
438 opts_off.sort_keys = false;
440 dynamic value = dynamic::object
446 dynamic::object("a", "b")
456 std::string sorted_keys =
457 R"({"a":[{"a":"b","c":"d"},12.5,"Yo Dawg",["heh"],null],)"
458 R"("another":32.2,"foo":"bar","junk":12})";
460 EXPECT_EQ(value, parseJson(folly::json::serialize(value, opts_on)));
461 EXPECT_EQ(value, parseJson(folly::json::serialize(value, opts_off)));
463 EXPECT_EQ(sorted_keys, folly::json::serialize(value, opts_on));
466 TEST(Json, PrintTo) {
467 std::ostringstream oss;
469 dynamic value = dynamic::object
473 (true, false) // include non-string keys
484 dynamic::object("a", "b")
494 std::string expected =
519 PrintTo(value, &oss);
520 EXPECT_EQ(expected, oss.str());