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 // @author Nicholas Ormrod <njormrod@fb.com>
19 #include <folly/DynamicConverter.h>
22 #include <gflags/gflags.h>
23 #include <gtest/gtest.h>
27 #include <folly/Benchmark.h>
29 using namespace folly;
30 using namespace folly::dynamicconverter_detail;
32 TEST(DynamicConverter, template_metaprogramming) {
35 bool c1f = is_container<int>::value;
36 bool c2f = is_container<std::pair<int, int>>::value;
37 bool c3f = is_container<A>::value;
38 bool c4f = class_is_container<A>::value;
40 bool c1t = is_container<std::vector<int>>::value;
41 bool c2t = is_container<std::set<int>>::value;
42 bool c3t = is_container<std::map<int, int>>::value;
43 bool c4t = class_is_container<std::vector<A>>::value;
45 EXPECT_EQ(c1f, false);
46 EXPECT_EQ(c2f, false);
47 EXPECT_EQ(c3f, false);
48 EXPECT_EQ(c4f, false);
55 bool m1f = is_map<int>::value;
56 bool m2f = is_map<std::set<int>>::value;
58 bool m1t = is_map<std::map<int, int>>::value;
60 EXPECT_EQ(m1f, false);
61 EXPECT_EQ(m2f, false);
65 bool r1f = is_range<int>::value;
67 bool r1t = is_range<std::set<int>>::value;
68 bool r2t = is_range<std::vector<int>>::value;
70 EXPECT_EQ(r1f, false);
75 TEST(DynamicConverter, arithmetic_types) {
77 auto i1 = convertTo<int>(d1);
80 dynamic d2 = 123456789012345;
81 auto i2 = convertTo<int64_t>(d2);
82 EXPECT_EQ(i2, 123456789012345);
85 auto i4 = convertTo<float>(d4);
86 EXPECT_EQ((int)(i4*100), 314);
89 auto i5 = convertTo<bool>(d5);
93 const auto i6 = convertTo<const int>(d6);
97 auto i7 = convertTo<int>(d7);
100 dynamic d8 = "false";
101 auto i8 = convertTo<bool>(d8);
102 EXPECT_EQ(i8, false);
105 TEST(DynamicConverter, simple_builtins) {
106 dynamic d1 = "Haskell";
107 auto i1 = convertTo<folly::fbstring>(d1);
108 EXPECT_EQ(i1, "Haskell");
111 auto i2 = convertTo<std::string>(d2);
114 dynamic d3 = { 12, "Scala" };
115 auto i3 = convertTo<std::pair<int, std::string>>(d3);
116 EXPECT_EQ(i3.first, 12);
117 EXPECT_EQ(i3.second, "Scala");
119 dynamic d4 = dynamic::object("C", "C++");
120 auto i4 = convertTo<std::pair<std::string, folly::fbstring>>(d4);
121 EXPECT_EQ(i4.first, "C");
122 EXPECT_EQ(i4.second, "C++");
125 TEST(DynamicConverter, simple_fbvector) {
126 dynamic d1 = { 1, 2, 3 };
127 auto i1 = convertTo<folly::fbvector<int>>(d1);
128 decltype(i1) i1b = { 1, 2, 3 };
132 TEST(DynamicConverter, simple_container) {
133 dynamic d1 = { 1, 2, 3 };
134 auto i1 = convertTo<std::vector<int>>(d1);
135 decltype(i1) i1b = { 1, 2, 3 };
138 dynamic d2 = { 1, 3, 5, 2, 4 };
139 auto i2 = convertTo<std::set<int>>(d2);
140 decltype(i2) i2b = { 1, 2, 3, 5, 4 };
144 TEST(DynamicConverter, simple_map) {
145 dynamic d1 = dynamic::object(1, "one")(2, "two");
146 auto i1 = convertTo<std::map<int, std::string>>(d1);
147 decltype(i1) i1b = { { 1, "one" }, { 2, "two" } };
150 dynamic d2 = { { 3, "three" }, { 4, "four" } };
151 auto i2 = convertTo<std::unordered_map<int, std::string>>(d2);
152 decltype(i2) i2b = { { 3, "three" }, { 4, "four" } };
156 TEST(DynamicConverter, map_keyed_by_string) {
157 dynamic d1 = dynamic::object("1", "one")("2", "two");
158 auto i1 = convertTo<std::map<std::string, std::string>>(d1);
159 decltype(i1) i1b = { { "1", "one" }, { "2", "two" } };
162 dynamic d2 = { { "3", "three" }, { "4", "four" } };
163 auto i2 = convertTo<std::unordered_map<std::string, std::string>>(d2);
164 decltype(i2) i2b = { { "3", "three" }, { "4", "four" } };
168 TEST(DynamicConverter, map_to_vector_of_pairs) {
169 dynamic d1 = dynamic::object("1", "one")("2", "two");
170 auto i1 = convertTo<std::vector<std::pair<std::string, std::string>>>(d1);
171 std::sort(i1.begin(), i1.end());
172 decltype(i1) i1b = { { "1", "one" }, { "2", "two" } };
176 TEST(DynamicConverter, nested_containers) {
177 dynamic d1 = { { 1 }, { }, { 2, 3 } };
178 auto i1 = convertTo<folly::fbvector<std::vector<uint8_t>>>(d1);
179 decltype(i1) i1b = { { 1 }, { }, { 2, 3 } };
182 dynamic h2a = { "3", ".", "1", "4" };
183 dynamic h2b = { "2", ".", "7", "2" };
184 dynamic d2 = dynamic::object(3.14, h2a)(2.72, h2b);
185 auto i2 = convertTo<std::map<double, std::vector<folly::fbstring>>>(d2);
187 { { 3.14, { "3", ".", "1", "4" } },
188 { 2.72, { "2", ".", "7", "2" } } };
194 bool operator==(const A & o) const { return i == o.i; }
197 template <> struct DynamicConverter<A> {
198 static A convert(const dynamic & d) {
199 return { convertTo<int>(d["i"]) };
203 TEST(DynamicConverter, custom_class) {
204 dynamic d1 = dynamic::object("i", 17);
205 auto i1 = convertTo<A>(d1);
208 dynamic d2 = { dynamic::object("i", 18), dynamic::object("i", 19) };
209 auto i2 = convertTo<std::vector<A>>(d2);
210 decltype(i2) i2b = { { 18 }, { 19 } };
214 TEST(DynamicConverter, crazy) {
215 // we are going to create a vector<unordered_map<bool, T>>
216 // we will construct some of the maps from dynamic objects,
217 // some from a vector of KV pairs.
218 // T will be vector<set<string>>
220 std::set<std::string>
221 s1 = { "a", "e", "i", "o", "u" },
222 s2 = { "2", "3", "5", "7" },
223 s3 = { "Hello", "World" };
225 std::vector<std::set<std::string>>
230 std::unordered_map<bool, std::vector<std::set<std::string>>>
231 m1 = { { true, v1 }, { false, v2 } },
232 m2 = { { true, v3 } };
234 std::vector<std::unordered_map<bool, std::vector<std::set<std::string>>>>
239 ds1 = { "a", "e", "i", "o", "u" },
240 ds2 = { "2", "3", "5", "7" },
241 ds3 = { "Hello", "World" };
249 dm1 = dynamic::object(true, dv1)(false, dv2),
250 dm2 = { { true, dv3 } };
256 auto i = convertTo<std::vector<std::unordered_map<bool, std::vector<
257 std::set<std::string>>>>>(df1); // yes, that is 5 close-chevrons
262 TEST(DynamicConverter, consts) {
264 auto i1 = convertTo<const double>(d1);
267 dynamic d2 = "Hello";
268 auto i2 = convertTo<const std::string>(d2);
269 decltype(i2) i2b = "Hello";
273 auto i3 = convertTo<const bool>(d3);
277 auto i4 = convertTo<const bool>(d4);
280 dynamic d5 = { 1, 2 };
281 auto i5 = convertTo<const std::pair<const int, const int>>(d5);
282 decltype(i5) i5b = { 1, 2 };
290 explicit Token(int kind, const fbstring& lexeme)
291 : kind_(kind), lexeme_(lexeme) {}
295 template <> struct DynamicConverter<Token> {
296 static Token convert(const dynamic& d) {
297 int k = convertTo<int>(d["KIND"]);
298 fbstring lex = convertTo<fbstring>(d["LEXEME"]);
299 return Token(k, lex);
304 TEST(DynamicConverter, example) {
305 dynamic d1 = dynamic::object("KIND", 2)("LEXEME", "a token");
306 auto i1 = convertTo<Token>(d1);
307 EXPECT_EQ(i1.kind_, 2);
308 EXPECT_EQ(i1.lexeme_, "a token");
311 TEST(DynamicConverter, construct) {
317 vector<int> c { 1, 2, 3 };
318 dynamic d = { 1, 2, 3 };
319 EXPECT_EQ(d, toDynamic(c));
323 map<int, int> c { { 2, 4 }, { 3, 9 } };
324 dynamic d = dynamic::object(2, 4)(3, 9);
325 EXPECT_EQ(d, toDynamic(c));
329 map<string, string> c { { "a", "b" } };
330 dynamic d = dynamic::object("a", "b");
331 EXPECT_EQ(d, toDynamic(c));
335 map<string, pair<string, int>> c { { "a", { "b", 3 } } };
336 dynamic d = dynamic::object("a", dynamic { "b", 3 });
337 EXPECT_EQ(d, toDynamic(c));
341 map<string, pair<string, int>> c { { "a", { "b", 3 } } };
342 dynamic d = dynamic::object("a", dynamic { "b", 3 });
343 EXPECT_EQ(d, toDynamic(c));
347 vector<int> vi { 2, 3, 4, 5 };
348 auto c = std::make_pair(range(vi.begin(), vi.begin() + 3),
349 range(vi.begin() + 1, vi.begin() + 4));
350 dynamic d = { { 2, 3, 4 }, { 3, 4, 5 } };
351 EXPECT_EQ(d, toDynamic(c));
355 TEST(DynamicConverter, errors) {
356 const auto int32Over =
357 static_cast<int64_t>(std::numeric_limits<int32_t>().max()) + 1;
358 const auto floatOver =
359 static_cast<double>(std::numeric_limits<float>().max()) * 2;
361 dynamic d1 = int32Over;
362 EXPECT_THROW(convertTo<int32_t>(d1), std::range_error);
364 dynamic d2 = floatOver;
365 EXPECT_THROW(convertTo<float>(d2), std::range_error);
368 int main(int argc, char ** argv) {
369 testing::InitGoogleTest(&argc, argv);
370 gflags::ParseCommandLineFlags(&argc, &argv, true);
371 if (FLAGS_benchmark) {
372 folly::runBenchmarks();
374 return RUN_ALL_TESTS();