1 // Copyright 2021 gRPC authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "src/core/util/match.h"
16
17 #include <stdlib.h>
18
19 #include <memory>
20
21 #include "gtest/gtest.h"
22
23 namespace grpc_core {
24 namespace testing {
25
TEST(MatchTest,Test)26 TEST(MatchTest, Test) {
27 EXPECT_EQ(Match(
28 absl::variant<int, double>(1.9), [](int) -> int { abort(); },
29 [](double x) -> int {
30 EXPECT_EQ(x, 1.9);
31 return 42;
32 }),
33 42);
34 EXPECT_EQ(Match(
35 absl::variant<int, double>(3),
36 [](int x) -> int {
37 EXPECT_EQ(x, 3);
38 return 42;
39 },
40 [](double) -> int { abort(); }),
41 42);
42 }
43
TEST(MatchTest,TestVoidReturn)44 TEST(MatchTest, TestVoidReturn) {
45 bool triggered = false;
46 Match(
47 absl::variant<int, double>(1.9), [](int) { abort(); },
48 [&triggered](double x) {
49 EXPECT_EQ(x, 1.9);
50 triggered = true;
51 });
52 EXPECT_TRUE(triggered);
53 }
54
TEST(MatchTest,TestMutable)55 TEST(MatchTest, TestMutable) {
56 absl::variant<int, double> v = 1.9;
57 MatchMutable(&v, [](int*) { abort(); }, [](double* x) { *x = 0.0; });
58 EXPECT_EQ(v, (absl::variant<int, double>(0.0)));
59 }
60
TEST(MatchTest,TestMutableWithReturn)61 TEST(MatchTest, TestMutableWithReturn) {
62 absl::variant<int, double> v = 1.9;
63 EXPECT_EQ(MatchMutable(
64 &v, [](int*) -> int { abort(); },
65 [](double* x) -> int {
66 *x = 0.0;
67 return 1;
68 }),
69 1);
70 EXPECT_EQ(v, (absl::variant<int, double>(0.0)));
71 }
72
73 } // namespace testing
74 } // namespace grpc_core
75
main(int argc,char ** argv)76 int main(int argc, char** argv) {
77 ::testing::InitGoogleTest(&argc, argv);
78 return RUN_ALL_TESTS();
79 }
80