Imported Upstream version 1.41.0
[platform/upstream/grpc.git] / test / core / promise / latch_test.cc
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/lib/promise/latch.h"
16
17 #include <gmock/gmock.h>
18 #include <gtest/gtest.h>
19
20 #include "src/core/lib/promise/join.h"
21 #include "src/core/lib/promise/seq.h"
22
23 using testing::MockFunction;
24 using testing::StrictMock;
25
26 namespace grpc_core {
27
28 TEST(LatchTest, Works) {
29   Latch<int> latch;
30   StrictMock<MockFunction<void(absl::Status)>> on_done;
31   EXPECT_CALL(on_done, Call(absl::OkStatus()));
32   MakeActivity(
33       [&latch] {
34         return Seq(Join(latch.Wait(),
35                         [&latch]() {
36                           latch.Set(42);
37                           return true;
38                         }),
39                    [](std::tuple<int*, bool> result) {
40                      EXPECT_EQ(*std::get<0>(result), 42);
41                      return absl::OkStatus();
42                    });
43       },
44       NoCallbackScheduler(),
45       [&on_done](absl::Status status) { on_done.Call(std::move(status)); });
46 }
47
48 }  // namespace grpc_core
49
50 int main(int argc, char** argv) {
51   ::testing::InitGoogleTest(&argc, argv);
52   return RUN_ALL_TESTS();
53 }