| // Copyright 2022 gRPC authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "src/core/lib/promise/mpsc.h" |
| |
| #include <memory> |
| #include <string> |
| |
| #include "absl/types/optional.h" |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| |
| #include <grpc/support/log.h> |
| |
| #include "src/core/lib/promise/activity.h" |
| #include "src/core/lib/promise/promise.h" |
| |
| using testing::Mock; |
| using testing::StrictMock; |
| |
| namespace grpc_core { |
| namespace { |
| |
| class MockActivity : public Activity, public Wakeable { |
| public: |
| MOCK_METHOD(void, WakeupRequested, ()); |
| |
| void ForceImmediateRepoll() override { WakeupRequested(); } |
| void Orphan() override {} |
| Waker MakeOwningWaker() override { return Waker(this, nullptr); } |
| Waker MakeNonOwningWaker() override { return Waker(this, nullptr); } |
| void Wakeup(void*) override { WakeupRequested(); } |
| void Drop(void*) override {} |
| std::string DebugTag() const override { return "MockActivity"; } |
| std::string ActivityDebugTag(void*) const override { return DebugTag(); } |
| |
| void Activate() { |
| if (scoped_activity_ != nullptr) return; |
| scoped_activity_ = std::make_unique<ScopedActivity>(this); |
| } |
| |
| void Deactivate() { scoped_activity_.reset(); } |
| |
| private: |
| std::unique_ptr<ScopedActivity> scoped_activity_; |
| }; |
| |
| struct Payload { |
| std::unique_ptr<int> x; |
| bool operator==(const Payload& other) const { |
| return (x == nullptr && other.x == nullptr) || |
| (x != nullptr && other.x != nullptr && *x == *other.x); |
| } |
| }; |
| Payload MakePayload(int value) { return {std::make_unique<int>(value)}; } |
| |
| TEST(MpscTest, NoOp) { MpscReceiver<Payload> receiver(1); } |
| |
| TEST(MpscTest, MakeSender) { |
| MpscReceiver<Payload> receiver(1); |
| MpscSender<Payload> sender = receiver.MakeSender(); |
| } |
| |
| TEST(MpscTest, SendOneThingInstantly) { |
| MpscReceiver<Payload> receiver(1); |
| MpscSender<Payload> sender = receiver.MakeSender(); |
| EXPECT_EQ(NowOrNever(sender.Send(MakePayload(1))), true); |
| } |
| |
| TEST(MpscTest, SendOneThingInstantlyAndReceiveInstantly) { |
| MpscReceiver<Payload> receiver(1); |
| MpscSender<Payload> sender = receiver.MakeSender(); |
| EXPECT_EQ(NowOrNever(sender.Send(MakePayload(1))), true); |
| EXPECT_EQ(NowOrNever(receiver.Next()), MakePayload(1)); |
| } |
| |
| TEST(MpscTest, SendingLotsOfThingsGivesPushback) { |
| StrictMock<MockActivity> activity1; |
| MpscReceiver<Payload> receiver(1); |
| MpscSender<Payload> sender = receiver.MakeSender(); |
| |
| activity1.Activate(); |
| EXPECT_EQ(NowOrNever(sender.Send(MakePayload(1))), true); |
| EXPECT_EQ(NowOrNever(sender.Send(MakePayload(2))), absl::nullopt); |
| activity1.Deactivate(); |
| } |
| |
| TEST(MpscTest, ReceivingAfterBlockageWakesUp) { |
| StrictMock<MockActivity> activity1; |
| StrictMock<MockActivity> activity2; |
| MpscReceiver<Payload> receiver(1); |
| MpscSender<Payload> sender = receiver.MakeSender(); |
| |
| activity1.Activate(); |
| EXPECT_EQ(NowOrNever(sender.Send(MakePayload(1))), true); |
| auto send2 = sender.Send(MakePayload(2)); |
| EXPECT_EQ(send2(), Poll<bool>(Pending{})); |
| activity1.Deactivate(); |
| |
| activity2.Activate(); |
| EXPECT_CALL(activity1, WakeupRequested()); |
| EXPECT_EQ(NowOrNever(receiver.Next()), MakePayload(1)); |
| Mock::VerifyAndClearExpectations(&activity1); |
| auto receive2 = receiver.Next(); |
| EXPECT_EQ(receive2(), Poll<Payload>(Pending{})); |
| activity2.Deactivate(); |
| |
| activity1.Activate(); |
| EXPECT_CALL(activity2, WakeupRequested()); |
| EXPECT_EQ(send2(), Poll<bool>(true)); |
| Mock::VerifyAndClearExpectations(&activity2); |
| activity1.Deactivate(); |
| |
| activity2.Activate(); |
| EXPECT_EQ(receive2(), Poll<Payload>(MakePayload(2))); |
| activity2.Deactivate(); |
| } |
| |
| TEST(MpscTest, BigBufferAllowsBurst) { |
| MpscReceiver<Payload> receiver(50); |
| MpscSender<Payload> sender = receiver.MakeSender(); |
| |
| for (int i = 0; i < 25; i++) { |
| EXPECT_EQ(NowOrNever(sender.Send(MakePayload(i))), true); |
| } |
| for (int i = 0; i < 25; i++) { |
| EXPECT_EQ(NowOrNever(receiver.Next()), MakePayload(i)); |
| } |
| } |
| |
| TEST(MpscTest, ClosureIsVisibleToSenders) { |
| auto receiver = std::make_unique<MpscReceiver<Payload>>(1); |
| MpscSender<Payload> sender = receiver->MakeSender(); |
| receiver.reset(); |
| EXPECT_EQ(NowOrNever(sender.Send(MakePayload(1))), false); |
| } |
| |
| } // namespace |
| } // namespace grpc_core |
| |
| int main(int argc, char** argv) { |
| gpr_log_verbosity_init(); |
| ::testing::InitGoogleTest(&argc, argv); |
| return RUN_ALL_TESTS(); |
| } |