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author | Konstantin Varlamov <var-const@users.noreply.github.com> | 2018-05-07 12:22:57 -0400 |
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committer | GitHub <noreply@github.com> | 2018-05-07 12:22:57 -0400 |
commit | 38824e721ebaa3f50e443e1ea4b47d34030e4703 (patch) | |
tree | b4a7f806b52f40d85fb92e571c216acaeba2fdc3 /Firestore/core/test/firebase/firestore/util/async_queue_test_libdispatch.cc | |
parent | 04a28fce81c737b6505e6c542a14d8529c9f891d (diff) |
C++ migration: add AsyncQueue, the C++ version of FSTDispatchQueue (#1176)
AsyncQueue is a queue that executes given operations asynchronously,
enforcing that only a single operation is executing at any given time,
and that in-progress operations don't spawn more operations. The actual
execution is delegated to a platform-specific executor. Executor is an
interface for a FIFO queue that executes given operations serially. Two
implementations of Executor, one using libdispatch and the other using
C++11 standard library, are provided.
AsyncQueue is not used anywhere in the code base at this point.
Diffstat (limited to 'Firestore/core/test/firebase/firestore/util/async_queue_test_libdispatch.cc')
-rw-r--r-- | Firestore/core/test/firebase/firestore/util/async_queue_test_libdispatch.cc | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/Firestore/core/test/firebase/firestore/util/async_queue_test_libdispatch.cc b/Firestore/core/test/firebase/firestore/util/async_queue_test_libdispatch.cc new file mode 100644 index 0000000..b4b9c63 --- /dev/null +++ b/Firestore/core/test/firebase/firestore/util/async_queue_test_libdispatch.cc @@ -0,0 +1,86 @@ +/* + * Copyright 2018 Google + * + * 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 "Firestore/core/test/firebase/firestore/util/async_queue_test.h" + +#include "Firestore/core/src/firebase/firestore/util/executor_libdispatch.h" + +#include "absl/memory/memory.h" +#include "gtest/gtest.h" + +namespace firebase { +namespace firestore { +namespace util { + +namespace { + +dispatch_queue_t CreateDispatchQueue() { + return dispatch_queue_create("AsyncQueueTests", DISPATCH_QUEUE_SERIAL); +} + +std::unique_ptr<internal::Executor> CreateExecutorFromQueue( + const dispatch_queue_t queue) { + return absl::make_unique<internal::ExecutorLibdispatch>(queue); +} + +std::unique_ptr<internal::Executor> CreateExecutorLibdispatch() { + return CreateExecutorFromQueue(CreateDispatchQueue()); +} + +} // namespace + +INSTANTIATE_TEST_CASE_P(AsyncQueueLibdispatch, + AsyncQueueTest, + ::testing::Values(CreateExecutorLibdispatch)); + +class AsyncQueueTestLibdispatchOnly : public TestWithTimeoutMixin, + public ::testing::Test { + public: + AsyncQueueTestLibdispatchOnly() + : underlying_queue{CreateDispatchQueue()}, + queue{CreateExecutorFromQueue(underlying_queue)} { + } + + dispatch_queue_t underlying_queue; + AsyncQueue queue; +}; + +// Additional tests to see how libdispatch-based version of `AsyncQueue` +// interacts with raw usage of libdispatch. + +TEST_F(AsyncQueueTestLibdispatchOnly, SameQueueIsAllowedForUnownedActions) { + internal::DispatchAsync(underlying_queue, [this] { + queue.Enqueue([this] { signal_finished(); }); + }); + EXPECT_TRUE(WaitForTestToFinish()); +} + +TEST_F(AsyncQueueTestLibdispatchOnly, + VerifyIsCurrentQueueRequiresOperationInProgress) { + internal::DispatchSync(underlying_queue, [this] { + EXPECT_ANY_THROW(queue.VerifyIsCurrentQueue()); + }); +} + +TEST_F(AsyncQueueTestLibdispatchOnly, + VerifyIsCurrentQueueRequiresBeingCalledAsync) { + ASSERT_NE(underlying_queue, dispatch_get_main_queue()); + EXPECT_ANY_THROW(queue.VerifyIsCurrentQueue()); +} + +} // namespace util +} // namespace firestore +} // namespace firebase |