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.
17 #include <folly/dynamic.h>
19 #include <folly/portability/GTest.h>
21 #include <boost/next_prior.hpp>
25 // This test runs without any external dependencies, including json.
26 // This means that if there's a test failure, there's no way to print
27 // a useful runtime representation of the folly::dynamic. We will
28 // live with this in order to test dependencies. This method is
29 // normally provided by json.cpp.
30 void dynamic::print_as_pseudo_json(std::ostream& out) const {
31 out << "<folly::dynamic object of type " << type_ << ">";
34 TEST(Dynamic, Default) {
36 EXPECT_TRUE(obj.isNull());
39 TEST(Dynamic, ObjectBasics) {
40 dynamic obj = dynamic::object("a", false);
41 EXPECT_EQ(obj.at("a"), false);
42 EXPECT_EQ(obj.size(), 1);
43 obj.insert("a", true);
44 EXPECT_EQ(obj.size(), 1);
45 EXPECT_EQ(obj.at("a"), true);
46 obj.at("a") = nullptr;
47 EXPECT_EQ(obj.size(), 1);
48 EXPECT_TRUE(obj.at("a") == nullptr);
50 dynamic newObject = dynamic::object;
53 EXPECT_EQ(newObject.size(), 1);
54 newObject["a"] = true;
55 EXPECT_EQ(newObject.size(), 2);
57 EXPECT_EQ(*newObject.keys().begin(), newObject.items().begin()->first);
58 EXPECT_EQ(*newObject.values().begin(), newObject.items().begin()->second);
59 std::vector<std::pair<std::string, dynamic>> found;
60 found.emplace_back(newObject.keys().begin()->asString(),
61 *newObject.values().begin());
63 EXPECT_EQ(*boost::next(newObject.keys().begin()),
64 boost::next(newObject.items().begin())->first);
65 EXPECT_EQ(*boost::next(newObject.values().begin()),
66 boost::next(newObject.items().begin())->second);
67 found.emplace_back(boost::next(newObject.keys().begin())->asString(),
68 *boost::next(newObject.values().begin()));
70 std::sort(found.begin(), found.end());
72 EXPECT_EQ("a", found[0].first);
73 EXPECT_TRUE(found[0].second.asBool());
75 EXPECT_EQ("z", found[1].first);
76 EXPECT_EQ(12, found[1].second.asInt());
78 dynamic obj2 = dynamic::object;
79 EXPECT_TRUE(obj2.isObject());
82 EXPECT_TRUE(d3 == nullptr);
84 EXPECT_TRUE(d3.isObject());
85 d3["foo"] = dynamic::array(1, 2, 3);
86 EXPECT_EQ(d3.count("foo"), 1);
89 EXPECT_EQ(d3.at(123), 321);
92 EXPECT_EQ(d3.at("123"), 42);
93 EXPECT_EQ(d3.at(123), 321);
95 dynamic objInsert = folly::dynamic::object();
96 dynamic objA = folly::dynamic::object("1", "2");
97 dynamic objB = folly::dynamic::object("1", "2");
99 objInsert.insert("1", std::move(objA));
100 objInsert.insert("1", std::move(objB));
102 EXPECT_EQ(objInsert.find("1")->second.size(), 1);
104 // We don't allow objects as keys in objects.
105 EXPECT_ANY_THROW(newObject[d3] = 12);
108 dynamic origMergeObj1 = folly::dynamic::object();
109 dynamic mergeObj1 = origMergeObj1 = folly::dynamic::object
112 dynamic mergeObj2 = folly::dynamic::object
116 // Merged object where we prefer the values in mergeObj2
117 dynamic combinedPreferObj2 = folly::dynamic::object
122 // Merged object where we prefer the values in mergeObj1
123 dynamic combinedPreferObj1 = folly::dynamic::object
128 auto newMergeObj = dynamic::merge(mergeObj1, mergeObj2);
129 EXPECT_EQ(newMergeObj, combinedPreferObj2);
130 EXPECT_EQ(mergeObj1, origMergeObj1); // mergeObj1 should be unchanged
132 mergeObj1.update(mergeObj2);
133 EXPECT_EQ(mergeObj1, combinedPreferObj2);
134 dynamic arr = dynamic::array(1, 2, 3, 4, 5, 6);
135 EXPECT_THROW(mergeObj1.update(arr), std::exception);
137 mergeObj1 = origMergeObj1; // reset it
138 mergeObj1.update_missing(mergeObj2);
139 EXPECT_EQ(mergeObj1, combinedPreferObj1);
142 TEST(Dynamic, ObjectErase) {
143 dynamic obj = dynamic::object("key1", "val")
145 EXPECT_EQ(obj.count("key1"), 1);
146 EXPECT_EQ(obj.count("key2"), 1);
147 EXPECT_EQ(obj.erase("key1"), 1);
148 EXPECT_EQ(obj.count("key1"), 0);
149 EXPECT_EQ(obj.count("key2"), 1);
150 EXPECT_EQ(obj.erase("key1"), 0);
152 EXPECT_EQ(obj.count("key1"), 1);
153 EXPECT_EQ(obj.count("key2"), 1);
154 auto it = obj.find("key2");
156 EXPECT_EQ(obj.count("key1"), 1);
157 EXPECT_EQ(obj.count("key2"), 0);
161 EXPECT_EQ(obj.size(), 3);
162 auto ret = obj.erase(boost::next(obj.items().begin()), obj.items().end());
163 EXPECT_TRUE(ret == obj.items().end());
164 EXPECT_EQ(obj.size(), 1);
165 obj.erase(obj.items().begin());
166 EXPECT_TRUE(obj.empty());
169 TEST(Dynamic, ArrayErase) {
170 dynamic arr = dynamic::array(1, 2, 3, 4, 5, 6);
172 EXPECT_THROW(arr.erase(1), std::exception);
173 EXPECT_EQ(arr.size(), 6);
174 EXPECT_EQ(arr[0], 1);
175 arr.erase(arr.begin());
176 EXPECT_EQ(arr.size(), 5);
178 arr.erase(boost::next(arr.begin()), boost::prior(arr.end()));
179 EXPECT_EQ(arr.size(), 2);
180 EXPECT_EQ(arr[0], 2);
181 EXPECT_EQ(arr[1], 6);
184 TEST(Dynamic, StringBasics) {
185 dynamic str = "hello world";
186 EXPECT_EQ(11, str.size());
187 EXPECT_FALSE(str.empty());
189 EXPECT_TRUE(str.empty());
192 TEST(Dynamic, ArrayBasics) {
193 dynamic array = dynamic::array(1, 2, 3);
194 EXPECT_EQ(array.size(), 3);
195 EXPECT_EQ(array.at(0), 1);
196 EXPECT_EQ(array.at(1), 2);
197 EXPECT_EQ(array.at(2), 3);
199 EXPECT_ANY_THROW(array.at(-1));
200 EXPECT_ANY_THROW(array.at(3));
202 array.push_back("foo");
203 EXPECT_EQ(array.size(), 4);
205 array.resize(12, "something");
206 EXPECT_EQ(array.size(), 12);
207 EXPECT_EQ(array[11], "something");
210 TEST(Dynamic, DeepCopy) {
211 dynamic val = dynamic::array("foo", "bar", dynamic::array("foo1", "bar1"));
212 EXPECT_EQ(val.at(2).at(0), "foo1");
213 EXPECT_EQ(val.at(2).at(1), "bar1");
215 EXPECT_EQ(val2.at(2).at(0), "foo1");
216 EXPECT_EQ(val2.at(2).at(1), "bar1");
217 EXPECT_EQ(val.at(2).at(0), "foo1");
218 EXPECT_EQ(val.at(2).at(1), "bar1");
219 val2.at(2).at(0) = "foo3";
220 val2.at(2).at(1) = "bar3";
221 EXPECT_EQ(val.at(2).at(0), "foo1");
222 EXPECT_EQ(val.at(2).at(1), "bar1");
223 EXPECT_EQ(val2.at(2).at(0), "foo3");
224 EXPECT_EQ(val2.at(2).at(1), "bar3");
227 dynamic::object("a", "b")
228 ("c", dynamic::array("d", "e", "f"));
229 EXPECT_EQ(obj.at("a"), "b");
231 obj2.at("a") = dynamic::array(1, 2, 3);
232 EXPECT_EQ(obj.at("a"), "b");
233 dynamic expected = dynamic::array(1, 2, 3);
234 EXPECT_EQ(obj2.at("a"), expected);
237 TEST(Dynamic, ArrayReassignment) {
239 dynamic d1 = dynamic::array(o);
240 EXPECT_EQ(dynamic::ARRAY, d1.type());
242 d1 = dynamic::array(o);
243 EXPECT_EQ(dynamic::ARRAY, d1.type());
246 TEST(Dynamic, Operator) {
249 dynamic d1 = dynamic::object;
250 dynamic d2 = dynamic::object;
252 LOG(ERROR) << "operator < returned "
253 << static_cast<int>(foo)
254 << " instead of throwing";
255 } catch (std::exception const& e) {
262 dynamic sum = foo + bar;
263 EXPECT_EQ(sum, "asdbar");
267 dynamic math = some / nums;
271 TEST(Dynamic, Conversions) {
272 dynamic str = "12.0";
273 EXPECT_EQ(str.asDouble(), 12.0);
274 EXPECT_ANY_THROW(str.asInt());
275 EXPECT_ANY_THROW(str.asBool());
278 EXPECT_EQ(str.asInt(), 12);
279 EXPECT_EQ(str.asDouble(), 12.0);
281 EXPECT_EQ(str.asBool(), false);
282 EXPECT_EQ(str.asInt(), 0);
283 EXPECT_EQ(str.asDouble(), 0);
284 EXPECT_EQ(str.asString(), "0");
287 EXPECT_EQ("12", num.asString());
288 EXPECT_EQ(12.0, num.asDouble());
291 TEST(Dynamic, GetSetDefaultTest) {
292 dynamic d1 = dynamic::object("foo", "bar");
293 EXPECT_EQ(d1.getDefault("foo", "baz"), "bar");
294 EXPECT_EQ(d1.getDefault("quux", "baz"), "baz");
296 dynamic d2 = dynamic::object("foo", "bar");
297 EXPECT_EQ(d2.setDefault("foo", "quux"), "bar");
298 d2.setDefault("bar", dynamic::array).push_back(42);
299 EXPECT_EQ(d2["bar"][0], 42);
301 dynamic d3 = dynamic::object, empty = dynamic::object;
302 EXPECT_EQ(d3.getDefault("foo"), empty);
303 d3.setDefault("foo")["bar"] = "baz";
304 EXPECT_EQ(d3["foo"]["bar"], "baz");
306 // we do not allow getDefault/setDefault on arrays
307 dynamic d4 = dynamic::array;
308 EXPECT_ANY_THROW(d4.getDefault("foo", "bar"));
309 EXPECT_ANY_THROW(d4.setDefault("foo", "bar"));
312 TEST(Dynamic, ObjectForwarding) {
313 // Make sure dynamic::object can be constructed the same way as any
315 dynamic d = dynamic::object("asd", dynamic::array("foo", "bar"));
316 dynamic d2 = dynamic::object("key2", dynamic::array("value", "words"))
320 TEST(Dynamic, GetPtr) {
321 dynamic array = dynamic::array(1, 2, "three");
322 EXPECT_TRUE(array.get_ptr(0));
323 EXPECT_FALSE(array.get_ptr(-1));
324 EXPECT_FALSE(array.get_ptr(3));
325 EXPECT_EQ(dynamic("three"), *array.get_ptr(2));
326 const dynamic& carray = array;
327 EXPECT_EQ(dynamic("three"), *carray.get_ptr(2));
329 dynamic object = dynamic::object("one", 1)("two", 2);
330 EXPECT_TRUE(object.get_ptr("one"));
331 EXPECT_FALSE(object.get_ptr("three"));
332 EXPECT_EQ(dynamic(2), *object.get_ptr("two"));
333 *object.get_ptr("one") = 11;
334 EXPECT_EQ(dynamic(11), *object.get_ptr("one"));
335 const dynamic& cobject = object;
336 EXPECT_EQ(dynamic(2), *cobject.get_ptr("two"));
339 TEST(Dynamic, Assignment) {
340 const dynamic ds[] = { dynamic::array(1, 2, 3),
341 dynamic::object("a", true),
346 const dynamic dd[] = { dynamic::array(5, 6),
347 dynamic::object("t", "T")(1, 7),
352 for (const auto& source : ds) {
353 for (const auto& dest : dd) {
355 EXPECT_EQ(tmp, dest);
357 EXPECT_EQ(tmp, source);
362 std::string make_long_string() {
363 return std::string(100, 'a');
366 TEST(Dynamic, GetDefault) {
367 const auto s = make_long_string();
370 dynamic d1 = dynamic::object("key1", s);
371 dynamic d2 = dynamic::object("key2", s);
372 dynamic d3 = dynamic::object("key3", s);
373 dynamic d4 = dynamic::object("key4", s);
376 EXPECT_EQ(ds, d1.getDefault("key1", ayy));
377 EXPECT_EQ(ds, d1.getDefault("key1", ayy));
378 EXPECT_EQ(ds, d1.getDefault("not-a-key", tmp));
381 EXPECT_EQ(ds, d1.getDefault("key1", "ayy"));
382 EXPECT_EQ(ds, d1.getDefault("key1", "ayy"));
383 EXPECT_EQ(ds, d1.getDefault("not-a-key", std::move(tmp)));
387 EXPECT_EQ(ds, std::move(d1).getDefault("key1", ayy));
388 EXPECT_NE(ds, d1["key1"]);
389 EXPECT_EQ(ds, std::move(d2).getDefault("not-a-key", tmp));
390 EXPECT_EQ(dynamic(dynamic::object("key2", s)), d2);
393 EXPECT_EQ(ds, std::move(d3).getDefault("key3", std::move(tmp)));
394 EXPECT_NE(ds, d3["key3"]);
396 EXPECT_EQ(ds, std::move(d4).getDefault("not-a-key", std::move(tmp)));
397 EXPECT_EQ(dynamic(dynamic::object("key4", s)), d4);
401 TEST(Dynamic, GetString) {
402 const dynamic c(make_long_string());
403 dynamic d(make_long_string());
404 dynamic m(make_long_string());
406 auto s = make_long_string();
408 EXPECT_EQ(s, c.getString());
409 EXPECT_EQ(s, c.getString());
411 d.getString() += " hello";
412 EXPECT_EQ(s + " hello", d.getString());
413 EXPECT_EQ(s + " hello", d.getString());
415 EXPECT_EQ(s, std::move(m).getString());
416 EXPECT_EQ(s, m.getString());
417 auto moved = std::move(m).getString();
419 EXPECT_NE(dynamic(s), m);
422 TEST(Dynamic, GetSmallThings) {
423 const dynamic cint(5);
424 const dynamic cdouble(5.0);
425 const dynamic cbool(true);
427 dynamic ddouble(5.0);
430 dynamic mdouble(5.0);
433 EXPECT_EQ(5, cint.getInt());
435 EXPECT_EQ(6, dint.getInt());
436 EXPECT_EQ(5, std::move(mint).getInt());
438 EXPECT_EQ(5.0, cdouble.getDouble());
439 ddouble.getDouble() = 6.0;
440 EXPECT_EQ(6.0, ddouble.getDouble());
441 EXPECT_EQ(5.0, std::move(mdouble).getDouble());
443 EXPECT_EQ(true, cbool.getBool());
444 dbool.getBool() = false;
445 EXPECT_FALSE(dbool.getBool());
446 EXPECT_EQ(true, std::move(mbool).getBool());
450 const dynamic cd = dynamic::object("key1", make_long_string());
451 dynamic dd = dynamic::object("key1", make_long_string());
452 dynamic md = dynamic::object("key1", make_long_string());
454 dynamic ds(make_long_string());
455 EXPECT_EQ(ds, cd.at("key1"));
456 EXPECT_EQ(ds, cd.at("key1"));
458 dd.at("key1").getString() += " hello";
459 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd.at("key1"));
460 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd.at("key1"));
462 EXPECT_EQ(ds, std::move(md).at("key1")); // move available, but not performed
463 EXPECT_EQ(ds, md.at("key1"));
464 dynamic moved = std::move(md).at("key1"); // move performed
465 EXPECT_EQ(ds, moved);
466 EXPECT_NE(ds, md.at("key1"));
469 TEST(Dynamic, Brackets) {
470 const dynamic cd = dynamic::object("key1", make_long_string());
471 dynamic dd = dynamic::object("key1", make_long_string());
472 dynamic md = dynamic::object("key1", make_long_string());
474 dynamic ds(make_long_string());
475 EXPECT_EQ(ds, cd["key1"]);
476 EXPECT_EQ(ds, cd["key1"]);
478 dd["key1"].getString() += " hello";
479 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd["key1"]);
480 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd["key1"]);
482 EXPECT_EQ(ds, std::move(md)["key1"]); // move available, but not performed
483 EXPECT_EQ(ds, md["key1"]);
484 dynamic moved = std::move(md)["key1"]; // move performed
485 EXPECT_EQ(ds, moved);
486 EXPECT_NE(ds, md["key1"]);
489 TEST(Dynamic, PrintNull) {
490 std::stringstream ss;
491 ss << folly::dynamic(nullptr);
492 EXPECT_EQ("null", ss.str());