2 * Copyright 2012 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"
20 #include <gtest/gtest.h>
21 #include <gflags/gflags.h>
22 #include "folly/Benchmark.h"
24 using namespace folly;
25 using namespace folly::dynamicconverter_detail;
27 TEST(DynamicConverter, template_metaprogramming) {
30 bool c1f = is_container<int>::value;
31 bool c2f = is_container<std::pair<int, int>>::value;
32 bool c3f = is_container<A>::value;
34 bool c1t = is_container<std::vector<int>>::value;
35 bool c2t = is_container<std::set<int>>::value;
36 bool c3t = is_container<std::map<int, int>>::value;
38 EXPECT_EQ(c1f, false);
39 EXPECT_EQ(c2f, false);
40 EXPECT_EQ(c3f, false);
46 TEST(DynamicConverter, arithmetic_types) {
48 auto i1 = convertTo<int>(d1);
51 dynamic d2 = 123456789012345;
52 auto i2 = convertTo<int64_t>(d2);
53 EXPECT_EQ(i2, 123456789012345);
55 dynamic d3 = 123456789012345;
56 auto i3 = convertTo<uint8_t>(d3);
60 auto i4 = convertTo<float>(d4);
61 EXPECT_EQ((int)(i4*100), 314);
64 auto i5 = convertTo<bool>(d5);
68 const auto i6 = convertTo<const int>(d6);
72 auto i7 = convertTo<int>(d7);
76 auto i8 = convertTo<bool>(d8);
80 TEST(DynamicConverter, simple_builtins) {
81 dynamic d1 = "Haskell";
82 auto i1 = convertTo<folly::fbstring>(d1);
83 EXPECT_EQ(i1, "Haskell");
86 auto i2 = convertTo<std::string>(d2);
89 dynamic d3 = { 12, "Scala" };
90 auto i3 = convertTo<std::pair<int, std::string>>(d3);
91 EXPECT_EQ(i3.first, 12);
92 EXPECT_EQ(i3.second, "Scala");
94 dynamic d4 = dynamic::object("C", "C++");
95 auto i4 = convertTo<std::pair<std::string, folly::fbstring>>(d4);
96 EXPECT_EQ(i4.first, "C");
97 EXPECT_EQ(i4.second, "C++");
100 TEST(DynamicConverter, simple_fbvector) {
101 dynamic d1 = { 1, 2, 3 };
102 auto i1 = convertTo<folly::fbvector<int>>(d1);
103 decltype(i1) i1b = { 1, 2, 3 };
107 TEST(DynamicConverter, simple_container) {
108 dynamic d1 = { 1, 2, 3 };
109 auto i1 = convertTo<std::vector<int>>(d1);
110 decltype(i1) i1b = { 1, 2, 3 };
113 dynamic d2 = { 1, 3, 5, 2, 4 };
114 auto i2 = convertTo<std::set<int>>(d2);
115 decltype(i2) i2b = { 1, 2, 3, 5, 4 };
119 TEST(DynamicConverter, simple_map) {
120 dynamic d1 = dynamic::object(1, "one")(2, "two");
121 auto i1 = convertTo<std::map<int, std::string>>(d1);
122 decltype(i1) i1b = { { 1, "one" }, { 2, "two" } };
125 dynamic d2 = { { 3, "three" }, { 4, "four" } };
126 auto i2 = convertTo<std::unordered_map<int, std::string>>(d2);
127 decltype(i2) i2b = { { 3, "three" }, { 4, "four" } };
131 TEST(DynamicConverter, map_keyed_by_string) {
132 dynamic d1 = dynamic::object("1", "one")("2", "two");
133 auto i1 = convertTo<std::map<std::string, std::string>>(d1);
134 decltype(i1) i1b = { { "1", "one" }, { "2", "two" } };
137 dynamic d2 = { { "3", "three" }, { "4", "four" } };
138 auto i2 = convertTo<std::unordered_map<std::string, std::string>>(d2);
139 decltype(i2) i2b = { { "3", "three" }, { "4", "four" } };
143 TEST(DynamicConverter, map_to_vector_of_pairs) {
144 dynamic d1 = dynamic::object("1", "one")("2", "two");
145 auto i1 = convertTo<std::vector<std::pair<std::string, std::string>>>(d1);
146 decltype(i1) i1b = { { "1", "one" }, { "2", "two" } };
150 TEST(DynamicConverter, nested_containers) {
151 dynamic d1 = { { 1 }, { }, { 2, 3 } };
152 auto i1 = convertTo<folly::fbvector<std::vector<uint8_t>>>(d1);
153 decltype(i1) i1b = { { 1 }, { }, { 2, 3 } };
156 dynamic h2a = { "3", ".", "1", "4" };
157 dynamic h2b = { "2", ".", "7", "2" };
158 dynamic d2 = dynamic::object(3.14, h2a)(2.72, h2b);
159 auto i2 = convertTo<std::map<double, std::vector<folly::fbstring>>>(d2);
161 { { 3.14, { "3", ".", "1", "4" } },
162 { 2.72, { "2", ".", "7", "2" } } };
168 bool operator==(const A & o) const { return i == o.i; }
171 template <> struct DynamicConverter<A> {
172 static A convert(const dynamic & d) {
173 return { convertTo<int>(d["i"]) };
177 TEST(DynamicConverter, custom_class) {
178 dynamic d1 = dynamic::object("i", 17);
179 auto i1 = convertTo<A>(d1);
182 dynamic d2 = { dynamic::object("i", 18), dynamic::object("i", 19) };
183 auto i2 = convertTo<std::vector<A>>(d2);
184 decltype(i2) i2b = { { 18 }, { 19 } };
188 TEST(DynamicConverter, crazy) {
189 // we are going to create a vector<unordered_map<bool, T>>
190 // we will construct some of the maps from dynamic objects,
191 // some from a vector of KV pairs.
192 // T will be vector<set<string>>
194 std::set<std::string>
195 s1 = { "a", "e", "i", "o", "u" },
196 s2 = { "2", "3", "5", "7" },
197 s3 = { "Hello", "World" };
199 std::vector<std::set<std::string>>
204 std::unordered_map<bool, std::vector<std::set<std::string>>>
205 m1 = { { true, v1 }, { false, v2 } },
206 m2 = { { true, v3 } };
208 std::vector<std::unordered_map<bool, std::vector<std::set<std::string>>>>
213 ds1 = { "a", "e", "i", "o", "u" },
214 ds2 = { "2", "3", "5", "7" },
215 ds3 = { "Hello", "World" };
223 dm1 = dynamic::object(true, dv1)(false, dv2),
224 dm2 = { { true, dv3 } };
230 auto i = convertTo<std::vector<std::unordered_map<bool, std::vector<
231 std::set<std::string>>>>>(df1); // yes, that is 5 close-chevrons
236 TEST(DynamicConverter, consts) {
238 auto i1 = convertTo<const double>(d1);
241 dynamic d2 = "Hello";
242 auto i2 = convertTo<const std::string>(d2);
243 decltype(i2) i2b = "Hello";
247 auto i3 = convertTo<const bool>(d3);
251 auto i4 = convertTo<const bool>(d4);
254 dynamic d5 = { 1, 2 };
255 auto i5 = convertTo<const std::pair<const int, const int>>(d5);
256 decltype(i5) i5b = { 1, 2 };
264 explicit Token(int kind, const fbstring& lexeme)
265 : kind_(kind), lexeme_(lexeme) {}
268 template <> struct DynamicConverter<Token> {
269 static Token convert(const dynamic& d) {
270 int k = convertTo<int>(d["KIND"]);
271 fbstring lex = convertTo<fbstring>(d["LEXEME"]);
272 return Token(k, lex);
276 TEST(DynamicConverter, example) {
277 dynamic d1 = dynamic::object("KIND", 2)("LEXEME", "a token");
278 auto i1 = convertTo<Token>(d1);
279 EXPECT_EQ(i1.kind_, 2);
280 EXPECT_EQ(i1.lexeme_, "a token");
283 int main(int argc, char ** argv) {
284 testing::InitGoogleTest(&argc, argv);
285 google::ParseCommandLineFlags(&argc, &argv, true);
286 if (FLAGS_benchmark) {
287 folly::runBenchmarks();
289 return RUN_ALL_TESTS();