2 * Copyright 2013 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 <gtest/gtest.h>
23 #include <gflags/gflags.h>
24 #include "folly/Benchmark.h"
26 using namespace folly;
27 using namespace folly::dynamicconverter_detail;
29 TEST(DynamicConverter, template_metaprogramming) {
32 bool c1f = is_container<int>::value;
33 bool c2f = is_container<std::pair<int, int>>::value;
34 bool c3f = is_container<A>::value;
36 bool c1t = is_container<std::vector<int>>::value;
37 bool c2t = is_container<std::set<int>>::value;
38 bool c3t = is_container<std::map<int, int>>::value;
40 EXPECT_EQ(c1f, false);
41 EXPECT_EQ(c2f, false);
42 EXPECT_EQ(c3f, false);
48 TEST(DynamicConverter, arithmetic_types) {
50 auto i1 = convertTo<int>(d1);
53 dynamic d2 = 123456789012345;
54 auto i2 = convertTo<int64_t>(d2);
55 EXPECT_EQ(i2, 123456789012345);
57 dynamic d3 = 123456789012345;
58 auto i3 = convertTo<uint8_t>(d3);
62 auto i4 = convertTo<float>(d4);
63 EXPECT_EQ((int)(i4*100), 314);
66 auto i5 = convertTo<bool>(d5);
70 const auto i6 = convertTo<const int>(d6);
74 auto i7 = convertTo<int>(d7);
78 auto i8 = convertTo<bool>(d8);
82 TEST(DynamicConverter, simple_builtins) {
83 dynamic d1 = "Haskell";
84 auto i1 = convertTo<folly::fbstring>(d1);
85 EXPECT_EQ(i1, "Haskell");
88 auto i2 = convertTo<std::string>(d2);
91 dynamic d3 = { 12, "Scala" };
92 auto i3 = convertTo<std::pair<int, std::string>>(d3);
93 EXPECT_EQ(i3.first, 12);
94 EXPECT_EQ(i3.second, "Scala");
96 dynamic d4 = dynamic::object("C", "C++");
97 auto i4 = convertTo<std::pair<std::string, folly::fbstring>>(d4);
98 EXPECT_EQ(i4.first, "C");
99 EXPECT_EQ(i4.second, "C++");
102 TEST(DynamicConverter, simple_fbvector) {
103 dynamic d1 = { 1, 2, 3 };
104 auto i1 = convertTo<folly::fbvector<int>>(d1);
105 decltype(i1) i1b = { 1, 2, 3 };
109 TEST(DynamicConverter, simple_container) {
110 dynamic d1 = { 1, 2, 3 };
111 auto i1 = convertTo<std::vector<int>>(d1);
112 decltype(i1) i1b = { 1, 2, 3 };
115 dynamic d2 = { 1, 3, 5, 2, 4 };
116 auto i2 = convertTo<std::set<int>>(d2);
117 decltype(i2) i2b = { 1, 2, 3, 5, 4 };
121 TEST(DynamicConverter, simple_map) {
122 dynamic d1 = dynamic::object(1, "one")(2, "two");
123 auto i1 = convertTo<std::map<int, std::string>>(d1);
124 decltype(i1) i1b = { { 1, "one" }, { 2, "two" } };
127 dynamic d2 = { { 3, "three" }, { 4, "four" } };
128 auto i2 = convertTo<std::unordered_map<int, std::string>>(d2);
129 decltype(i2) i2b = { { 3, "three" }, { 4, "four" } };
133 TEST(DynamicConverter, map_keyed_by_string) {
134 dynamic d1 = dynamic::object("1", "one")("2", "two");
135 auto i1 = convertTo<std::map<std::string, std::string>>(d1);
136 decltype(i1) i1b = { { "1", "one" }, { "2", "two" } };
139 dynamic d2 = { { "3", "three" }, { "4", "four" } };
140 auto i2 = convertTo<std::unordered_map<std::string, std::string>>(d2);
141 decltype(i2) i2b = { { "3", "three" }, { "4", "four" } };
145 TEST(DynamicConverter, map_to_vector_of_pairs) {
146 dynamic d1 = dynamic::object("1", "one")("2", "two");
147 auto i1 = convertTo<std::vector<std::pair<std::string, std::string>>>(d1);
148 std::sort(i1.begin(), i1.end());
149 decltype(i1) i1b = { { "1", "one" }, { "2", "two" } };
153 TEST(DynamicConverter, nested_containers) {
154 dynamic d1 = { { 1 }, { }, { 2, 3 } };
155 auto i1 = convertTo<folly::fbvector<std::vector<uint8_t>>>(d1);
156 decltype(i1) i1b = { { 1 }, { }, { 2, 3 } };
159 dynamic h2a = { "3", ".", "1", "4" };
160 dynamic h2b = { "2", ".", "7", "2" };
161 dynamic d2 = dynamic::object(3.14, h2a)(2.72, h2b);
162 auto i2 = convertTo<std::map<double, std::vector<folly::fbstring>>>(d2);
164 { { 3.14, { "3", ".", "1", "4" } },
165 { 2.72, { "2", ".", "7", "2" } } };
171 bool operator==(const A & o) const { return i == o.i; }
174 template <> struct DynamicConverter<A> {
175 static A convert(const dynamic & d) {
176 return { convertTo<int>(d["i"]) };
180 TEST(DynamicConverter, custom_class) {
181 dynamic d1 = dynamic::object("i", 17);
182 auto i1 = convertTo<A>(d1);
185 dynamic d2 = { dynamic::object("i", 18), dynamic::object("i", 19) };
186 auto i2 = convertTo<std::vector<A>>(d2);
187 decltype(i2) i2b = { { 18 }, { 19 } };
191 TEST(DynamicConverter, crazy) {
192 // we are going to create a vector<unordered_map<bool, T>>
193 // we will construct some of the maps from dynamic objects,
194 // some from a vector of KV pairs.
195 // T will be vector<set<string>>
197 std::set<std::string>
198 s1 = { "a", "e", "i", "o", "u" },
199 s2 = { "2", "3", "5", "7" },
200 s3 = { "Hello", "World" };
202 std::vector<std::set<std::string>>
207 std::unordered_map<bool, std::vector<std::set<std::string>>>
208 m1 = { { true, v1 }, { false, v2 } },
209 m2 = { { true, v3 } };
211 std::vector<std::unordered_map<bool, std::vector<std::set<std::string>>>>
216 ds1 = { "a", "e", "i", "o", "u" },
217 ds2 = { "2", "3", "5", "7" },
218 ds3 = { "Hello", "World" };
226 dm1 = dynamic::object(true, dv1)(false, dv2),
227 dm2 = { { true, dv3 } };
233 auto i = convertTo<std::vector<std::unordered_map<bool, std::vector<
234 std::set<std::string>>>>>(df1); // yes, that is 5 close-chevrons
239 TEST(DynamicConverter, consts) {
241 auto i1 = convertTo<const double>(d1);
244 dynamic d2 = "Hello";
245 auto i2 = convertTo<const std::string>(d2);
246 decltype(i2) i2b = "Hello";
250 auto i3 = convertTo<const bool>(d3);
254 auto i4 = convertTo<const bool>(d4);
257 dynamic d5 = { 1, 2 };
258 auto i5 = convertTo<const std::pair<const int, const int>>(d5);
259 decltype(i5) i5b = { 1, 2 };
267 explicit Token(int kind, const fbstring& lexeme)
268 : kind_(kind), lexeme_(lexeme) {}
271 template <> struct DynamicConverter<Token> {
272 static Token convert(const dynamic& d) {
273 int k = convertTo<int>(d["KIND"]);
274 fbstring lex = convertTo<fbstring>(d["LEXEME"]);
275 return Token(k, lex);
279 TEST(DynamicConverter, example) {
280 dynamic d1 = dynamic::object("KIND", 2)("LEXEME", "a token");
281 auto i1 = convertTo<Token>(d1);
282 EXPECT_EQ(i1.kind_, 2);
283 EXPECT_EQ(i1.lexeme_, "a token");
286 int main(int argc, char ** argv) {
287 testing::InitGoogleTest(&argc, argv);
288 google::ParseCommandLineFlags(&argc, &argv, true);
289 if (FLAGS_benchmark) {
290 folly::runBenchmarks();
292 return RUN_ALL_TESTS();