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, ObjectBasics) {
35 dynamic obj = dynamic::object("a", false);
36 EXPECT_EQ(obj.at("a"), false);
37 EXPECT_EQ(obj.size(), 1);
38 obj.insert("a", true);
39 EXPECT_EQ(obj.size(), 1);
40 EXPECT_EQ(obj.at("a"), true);
41 obj.at("a") = nullptr;
42 EXPECT_EQ(obj.size(), 1);
43 EXPECT_TRUE(obj.at("a") == nullptr);
45 dynamic newObject = dynamic::object;
48 EXPECT_EQ(newObject.size(), 1);
49 newObject["a"] = true;
50 EXPECT_EQ(newObject.size(), 2);
52 EXPECT_EQ(*newObject.keys().begin(), newObject.items().begin()->first);
53 EXPECT_EQ(*newObject.values().begin(), newObject.items().begin()->second);
54 std::vector<std::pair<std::string, dynamic>> found;
55 found.emplace_back(newObject.keys().begin()->asString(),
56 *newObject.values().begin());
58 EXPECT_EQ(*boost::next(newObject.keys().begin()),
59 boost::next(newObject.items().begin())->first);
60 EXPECT_EQ(*boost::next(newObject.values().begin()),
61 boost::next(newObject.items().begin())->second);
62 found.emplace_back(boost::next(newObject.keys().begin())->asString(),
63 *boost::next(newObject.values().begin()));
65 std::sort(found.begin(), found.end());
67 EXPECT_EQ("a", found[0].first);
68 EXPECT_TRUE(found[0].second.asBool());
70 EXPECT_EQ("z", found[1].first);
71 EXPECT_EQ(12, found[1].second.asInt());
73 dynamic obj2 = dynamic::object;
74 EXPECT_TRUE(obj2.isObject());
77 EXPECT_TRUE(d3 == nullptr);
79 EXPECT_TRUE(d3.isObject());
80 d3["foo"] = dynamic::array(1, 2, 3);
81 EXPECT_EQ(d3.count("foo"), 1);
84 EXPECT_EQ(d3.at(123), 321);
87 EXPECT_EQ(d3.at("123"), 42);
88 EXPECT_EQ(d3.at(123), 321);
90 dynamic objInsert = folly::dynamic::object();
91 dynamic objA = folly::dynamic::object("1", "2");
92 dynamic objB = folly::dynamic::object("1", "2");
94 objInsert.insert("1", std::move(objA));
95 objInsert.insert("1", std::move(objB));
97 EXPECT_EQ(objInsert.find("1")->second.size(), 1);
99 // We don't allow objects as keys in objects.
100 EXPECT_ANY_THROW(newObject[d3] = 12);
103 dynamic origMergeObj1 = folly::dynamic::object();
104 dynamic mergeObj1 = origMergeObj1 = folly::dynamic::object
107 dynamic mergeObj2 = folly::dynamic::object
111 // Merged object where we prefer the values in mergeObj2
112 dynamic combinedPreferObj2 = folly::dynamic::object
117 // Merged object where we prefer the values in mergeObj1
118 dynamic combinedPreferObj1 = folly::dynamic::object
123 auto newMergeObj = dynamic::merge(mergeObj1, mergeObj2);
124 EXPECT_EQ(newMergeObj, combinedPreferObj2);
125 EXPECT_EQ(mergeObj1, origMergeObj1); // mergeObj1 should be unchanged
127 mergeObj1.update(mergeObj2);
128 EXPECT_EQ(mergeObj1, combinedPreferObj2);
129 dynamic arr = dynamic::array(1, 2, 3, 4, 5, 6);
130 EXPECT_THROW(mergeObj1.update(arr), std::exception);
132 mergeObj1 = origMergeObj1; // reset it
133 mergeObj1.update_missing(mergeObj2);
134 EXPECT_EQ(mergeObj1, combinedPreferObj1);
137 TEST(Dynamic, ObjectErase) {
138 dynamic obj = dynamic::object("key1", "val")
140 EXPECT_EQ(obj.count("key1"), 1);
141 EXPECT_EQ(obj.count("key2"), 1);
142 EXPECT_EQ(obj.erase("key1"), 1);
143 EXPECT_EQ(obj.count("key1"), 0);
144 EXPECT_EQ(obj.count("key2"), 1);
145 EXPECT_EQ(obj.erase("key1"), 0);
147 EXPECT_EQ(obj.count("key1"), 1);
148 EXPECT_EQ(obj.count("key2"), 1);
149 auto it = obj.find("key2");
151 EXPECT_EQ(obj.count("key1"), 1);
152 EXPECT_EQ(obj.count("key2"), 0);
156 EXPECT_EQ(obj.size(), 3);
157 auto ret = obj.erase(boost::next(obj.items().begin()), obj.items().end());
158 EXPECT_TRUE(ret == obj.items().end());
159 EXPECT_EQ(obj.size(), 1);
160 obj.erase(obj.items().begin());
161 EXPECT_TRUE(obj.empty());
164 TEST(Dynamic, ArrayErase) {
165 dynamic arr = dynamic::array(1, 2, 3, 4, 5, 6);
167 EXPECT_THROW(arr.erase(1), std::exception);
168 EXPECT_EQ(arr.size(), 6);
169 EXPECT_EQ(arr[0], 1);
170 arr.erase(arr.begin());
171 EXPECT_EQ(arr.size(), 5);
173 arr.erase(boost::next(arr.begin()), boost::prior(arr.end()));
174 EXPECT_EQ(arr.size(), 2);
175 EXPECT_EQ(arr[0], 2);
176 EXPECT_EQ(arr[1], 6);
179 TEST(Dynamic, StringBasics) {
180 dynamic str = "hello world";
181 EXPECT_EQ(11, str.size());
182 EXPECT_FALSE(str.empty());
184 EXPECT_TRUE(str.empty());
187 TEST(Dynamic, ArrayBasics) {
188 dynamic array = dynamic::array(1, 2, 3);
189 EXPECT_EQ(array.size(), 3);
190 EXPECT_EQ(array.at(0), 1);
191 EXPECT_EQ(array.at(1), 2);
192 EXPECT_EQ(array.at(2), 3);
194 EXPECT_ANY_THROW(array.at(-1));
195 EXPECT_ANY_THROW(array.at(3));
197 array.push_back("foo");
198 EXPECT_EQ(array.size(), 4);
200 array.resize(12, "something");
201 EXPECT_EQ(array.size(), 12);
202 EXPECT_EQ(array[11], "something");
205 TEST(Dynamic, DeepCopy) {
206 dynamic val = dynamic::array("foo", "bar", dynamic::array("foo1", "bar1"));
207 EXPECT_EQ(val.at(2).at(0), "foo1");
208 EXPECT_EQ(val.at(2).at(1), "bar1");
210 EXPECT_EQ(val2.at(2).at(0), "foo1");
211 EXPECT_EQ(val2.at(2).at(1), "bar1");
212 EXPECT_EQ(val.at(2).at(0), "foo1");
213 EXPECT_EQ(val.at(2).at(1), "bar1");
214 val2.at(2).at(0) = "foo3";
215 val2.at(2).at(1) = "bar3";
216 EXPECT_EQ(val.at(2).at(0), "foo1");
217 EXPECT_EQ(val.at(2).at(1), "bar1");
218 EXPECT_EQ(val2.at(2).at(0), "foo3");
219 EXPECT_EQ(val2.at(2).at(1), "bar3");
222 dynamic::object("a", "b")
223 ("c", dynamic::array("d", "e", "f"));
224 EXPECT_EQ(obj.at("a"), "b");
226 obj2.at("a") = dynamic::array(1, 2, 3);
227 EXPECT_EQ(obj.at("a"), "b");
228 dynamic expected = dynamic::array(1, 2, 3);
229 EXPECT_EQ(obj2.at("a"), expected);
232 TEST(Dynamic, ArrayReassignment) {
234 dynamic d1 = dynamic::array(o);
235 EXPECT_EQ(dynamic::ARRAY, d1.type());
237 d1 = dynamic::array(o);
238 EXPECT_EQ(dynamic::ARRAY, d1.type());
241 TEST(Dynamic, Operator) {
244 dynamic d1 = dynamic::object;
245 dynamic d2 = dynamic::object;
247 LOG(ERROR) << "operator < returned "
248 << static_cast<int>(foo)
249 << " instead of throwing";
250 } catch (std::exception const& e) {
257 dynamic sum = foo + bar;
258 EXPECT_EQ(sum, "asdbar");
262 dynamic math = some / nums;
266 TEST(Dynamic, Conversions) {
267 dynamic str = "12.0";
268 EXPECT_EQ(str.asDouble(), 12.0);
269 EXPECT_ANY_THROW(str.asInt());
270 EXPECT_ANY_THROW(str.asBool());
273 EXPECT_EQ(str.asInt(), 12);
274 EXPECT_EQ(str.asDouble(), 12.0);
276 EXPECT_EQ(str.asBool(), false);
277 EXPECT_EQ(str.asInt(), 0);
278 EXPECT_EQ(str.asDouble(), 0);
279 EXPECT_EQ(str.asString(), "0");
282 EXPECT_EQ("12", num.asString());
283 EXPECT_EQ(12.0, num.asDouble());
286 TEST(Dynamic, GetSetDefaultTest) {
287 dynamic d1 = dynamic::object("foo", "bar");
288 EXPECT_EQ(d1.getDefault("foo", "baz"), "bar");
289 EXPECT_EQ(d1.getDefault("quux", "baz"), "baz");
291 dynamic d2 = dynamic::object("foo", "bar");
292 EXPECT_EQ(d2.setDefault("foo", "quux"), "bar");
293 d2.setDefault("bar", dynamic::array).push_back(42);
294 EXPECT_EQ(d2["bar"][0], 42);
296 dynamic d3 = dynamic::object, empty = dynamic::object;
297 EXPECT_EQ(d3.getDefault("foo"), empty);
298 d3.setDefault("foo")["bar"] = "baz";
299 EXPECT_EQ(d3["foo"]["bar"], "baz");
301 // we do not allow getDefault/setDefault on arrays
302 dynamic d4 = dynamic::array;
303 EXPECT_ANY_THROW(d4.getDefault("foo", "bar"));
304 EXPECT_ANY_THROW(d4.setDefault("foo", "bar"));
307 TEST(Dynamic, ObjectForwarding) {
308 // Make sure dynamic::object can be constructed the same way as any
310 dynamic d = dynamic::object("asd", dynamic::array("foo", "bar"));
311 dynamic d2 = dynamic::object("key2", dynamic::array("value", "words"))
315 TEST(Dynamic, GetPtr) {
316 dynamic array = dynamic::array(1, 2, "three");
317 EXPECT_TRUE(array.get_ptr(0));
318 EXPECT_FALSE(array.get_ptr(-1));
319 EXPECT_FALSE(array.get_ptr(3));
320 EXPECT_EQ(dynamic("three"), *array.get_ptr(2));
321 const dynamic& carray = array;
322 EXPECT_EQ(dynamic("three"), *carray.get_ptr(2));
324 dynamic object = dynamic::object("one", 1)("two", 2);
325 EXPECT_TRUE(object.get_ptr("one"));
326 EXPECT_FALSE(object.get_ptr("three"));
327 EXPECT_EQ(dynamic(2), *object.get_ptr("two"));
328 *object.get_ptr("one") = 11;
329 EXPECT_EQ(dynamic(11), *object.get_ptr("one"));
330 const dynamic& cobject = object;
331 EXPECT_EQ(dynamic(2), *cobject.get_ptr("two"));
334 TEST(Dynamic, Assignment) {
335 const dynamic ds[] = { dynamic::array(1, 2, 3),
336 dynamic::object("a", true),
341 const dynamic dd[] = { dynamic::array(5, 6),
342 dynamic::object("t", "T")(1, 7),
347 for (const auto& source : ds) {
348 for (const auto& dest : dd) {
350 EXPECT_EQ(tmp, dest);
352 EXPECT_EQ(tmp, source);
357 std::string make_long_string() {
358 return std::string(100, 'a');
361 TEST(Dynamic, GetDefault) {
362 const auto s = make_long_string();
365 dynamic d1 = dynamic::object("key1", s);
366 dynamic d2 = dynamic::object("key2", s);
367 dynamic d3 = dynamic::object("key3", s);
368 dynamic d4 = dynamic::object("key4", s);
371 EXPECT_EQ(ds, d1.getDefault("key1", ayy));
372 EXPECT_EQ(ds, d1.getDefault("key1", ayy));
373 EXPECT_EQ(ds, d1.getDefault("not-a-key", tmp));
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", std::move(tmp)));
382 EXPECT_EQ(ds, std::move(d1).getDefault("key1", ayy));
383 EXPECT_NE(ds, d1["key1"]);
384 EXPECT_EQ(ds, std::move(d2).getDefault("not-a-key", tmp));
385 EXPECT_EQ(dynamic(dynamic::object("key2", s)), d2);
388 EXPECT_EQ(ds, std::move(d3).getDefault("key3", std::move(tmp)));
389 EXPECT_NE(ds, d3["key3"]);
391 EXPECT_EQ(ds, std::move(d4).getDefault("not-a-key", std::move(tmp)));
392 EXPECT_EQ(dynamic(dynamic::object("key4", s)), d4);
396 TEST(Dynamic, GetString) {
397 const dynamic c(make_long_string());
398 dynamic d(make_long_string());
399 dynamic m(make_long_string());
401 auto s = make_long_string();
403 EXPECT_EQ(s, c.getString());
404 EXPECT_EQ(s, c.getString());
406 d.getString() += " hello";
407 EXPECT_EQ(s + " hello", d.getString());
408 EXPECT_EQ(s + " hello", d.getString());
410 EXPECT_EQ(s, std::move(m).getString());
411 EXPECT_EQ(s, m.getString());
412 auto moved = std::move(m).getString();
414 EXPECT_NE(dynamic(s), m);
417 TEST(Dynamic, GetSmallThings) {
418 const dynamic cint(5);
419 const dynamic cdouble(5.0);
420 const dynamic cbool(true);
422 dynamic ddouble(5.0);
425 dynamic mdouble(5.0);
428 EXPECT_EQ(5, cint.getInt());
430 EXPECT_EQ(6, dint.getInt());
431 EXPECT_EQ(5, std::move(mint).getInt());
433 EXPECT_EQ(5.0, cdouble.getDouble());
434 ddouble.getDouble() = 6.0;
435 EXPECT_EQ(6.0, ddouble.getDouble());
436 EXPECT_EQ(5.0, std::move(mdouble).getDouble());
438 EXPECT_EQ(true, cbool.getBool());
439 dbool.getBool() = false;
440 EXPECT_FALSE(dbool.getBool());
441 EXPECT_EQ(true, std::move(mbool).getBool());
445 const dynamic cd = dynamic::object("key1", make_long_string());
446 dynamic dd = dynamic::object("key1", make_long_string());
447 dynamic md = dynamic::object("key1", make_long_string());
449 dynamic ds(make_long_string());
450 EXPECT_EQ(ds, cd.at("key1"));
451 EXPECT_EQ(ds, cd.at("key1"));
453 dd.at("key1").getString() += " hello";
454 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd.at("key1"));
455 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd.at("key1"));
457 EXPECT_EQ(ds, std::move(md).at("key1")); // move available, but not performed
458 EXPECT_EQ(ds, md.at("key1"));
459 dynamic moved = std::move(md).at("key1"); // move performed
460 EXPECT_EQ(ds, moved);
461 EXPECT_NE(ds, md.at("key1"));
464 TEST(Dynamic, Brackets) {
465 const dynamic cd = dynamic::object("key1", make_long_string());
466 dynamic dd = dynamic::object("key1", make_long_string());
467 dynamic md = dynamic::object("key1", make_long_string());
469 dynamic ds(make_long_string());
470 EXPECT_EQ(ds, cd["key1"]);
471 EXPECT_EQ(ds, cd["key1"]);
473 dd["key1"].getString() += " hello";
474 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd["key1"]);
475 EXPECT_EQ(dynamic(make_long_string() + " hello"), dd["key1"]);
477 EXPECT_EQ(ds, std::move(md)["key1"]); // move available, but not performed
478 EXPECT_EQ(ds, md["key1"]);
479 dynamic moved = std::move(md)["key1"]; // move performed
480 EXPECT_EQ(ds, moved);
481 EXPECT_NE(ds, md["key1"]);
484 TEST(Dynamic, PrintNull) {
485 std::stringstream ss;
486 ss << folly::dynamic(nullptr);
487 EXPECT_EQ("null", ss.str());