Index: base/task_scheduler/task_tracker_unittest.cc |
diff --git a/base/task_scheduler/task_tracker_unittest.cc b/base/task_scheduler/task_tracker_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a45f15777d3fccde742d8f0582075f87fc8c2037 |
--- /dev/null |
+++ b/base/task_scheduler/task_tracker_unittest.cc |
@@ -0,0 +1,379 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "base/task_scheduler/task_tracker.h" |
+ |
+#include "base/bind.h" |
+#include "base/macros.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/task_scheduler/task.h" |
+#include "base/task_scheduler/task_traits.h" |
+#include "base/threading/platform_thread.h" |
+#include "base/threading/simple_thread.h" |
+#include "testing/gtest/include/gtest/gtest.h" |
+ |
+namespace base { |
robliao
2016/03/01 22:29:42
I think you need a test case where we block shutdo
fdoray
2016/03/02 00:38:41
Done. PostAndRunBlockedContinueOnShutdownTaskBefor
|
+namespace internal { |
+ |
+namespace { |
+ |
+class ThreadCallingShutdown : public SimpleThread { |
+ public: |
+ explicit ThreadCallingShutdown(TaskTracker* tracker) |
+ : SimpleThread("ThreadCallingShutdown"), |
+ tracker_(tracker), |
+ has_returned_(false) {} |
+ |
+ // Returns true once the call to Shutdown() has returned. |
+ bool has_returned() const { return has_returned_; } |
+ |
+ private: |
+ void Run() override { |
+ tracker_->Shutdown(); |
+ has_returned_ = true; |
+ } |
+ |
+ TaskTracker* tracker_; |
+ bool has_returned_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ThreadCallingShutdown); |
+}; |
+ |
+class TaskSchedulerTaskTrackerTest : public testing::Test { |
+ protected: |
+ TaskSchedulerTaskTrackerTest() : num_run_tasks_(0) {} |
+ |
+ // Creates a task with |shutdown_behavior|. |
+ scoped_ptr<Task> CreateTask(TaskShutdownBehavior shutdown_behavior) { |
+ return make_scoped_ptr(new Task( |
+ FROM_HERE, |
+ Bind(&TaskSchedulerTaskTrackerTest::RunTaskCallback, Unretained(this)), |
+ TaskTraits().WithShutdownBehavior(shutdown_behavior))); |
+ } |
+ |
+ // Tries to post |task| via |tracker_|. If |tracker_| approves the operation, |
+ // returns the posted task. Otherwise, returns nullptr. |
+ scoped_ptr<Task> PostTaskViaTracker(scoped_ptr<Task> task) { |
+ scoped_ptr<Task> posted_task; |
+ tracker_.PostTask(Bind(&TaskSchedulerTaskTrackerTest::PostTaskCallback, |
+ Unretained(this), &posted_task), |
+ std::move(task)); |
+ return posted_task; |
gab
2016/03/01 22:18:47
This feels very weird... how about instead have a
fdoray
2016/03/02 00:38:41
Done. I now use an std::queue.
|
+ } |
+ |
+ // Calls tracker_->Shutdown() on a new thread. When this returns, the |
+ // Shutdown() method has been entered on the new thread, but it hasn't |
+ // necessarily returned. |
+ void CallShutdownAsync() { |
+ DCHECK(!thread_calling_shutdown_.get()); |
+ thread_calling_shutdown_.reset(new ThreadCallingShutdown(&tracker_)); |
+ thread_calling_shutdown_->Start(); |
+ while (!tracker_.is_shutting_down_for_testing() && |
+ !tracker_.shutdown_completed()) { |
+ PlatformThread::YieldCurrentThread(); |
+ } |
+ } |
+ |
+ void ExpectShutdownAsyncHasReturned() { |
+ DCHECK(thread_calling_shutdown_.get()); |
+ thread_calling_shutdown_->Join(); |
robliao
2016/03/01 22:29:42
It would be unexpected to join with the duality be
fdoray
2016/03/02 00:38:41
Done.
|
+ EXPECT_TRUE(thread_calling_shutdown_->has_returned()); |
+ EXPECT_TRUE(tracker_.shutdown_completed()); |
+ } |
+ |
+ void ExpectShutdownAsyncHasNotReturned() { |
+ DCHECK(thread_calling_shutdown_.get()); |
+ EXPECT_FALSE(thread_calling_shutdown_->has_returned()); |
+ EXPECT_FALSE(tracker_.shutdown_completed()); |
+ } |
+ |
+ TaskTracker tracker_; |
+ size_t num_run_tasks_; |
gab
2016/03/01 22:18:47
num_tasks_executed_ ?
fdoray
2016/03/02 00:38:41
Done.
|
+ |
+ private: |
+ void PostTaskCallback(scoped_ptr<Task>* out_task, scoped_ptr<Task> in_task) { |
+ *out_task = std::move(in_task); |
+ } |
+ |
+ void RunTaskCallback() { ++num_run_tasks_; } |
+ |
+ scoped_ptr<ThreadCallingShutdown> thread_calling_shutdown_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(TaskSchedulerTaskTrackerTest); |
+}; |
+ |
+} // namespace |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostAndRunBeforeShutdown_ContinueOnShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // Run the posted task. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
gab
2016/03/01 22:18:47
EXPECT_EQ(0U, ...); as well before RunTask()?
fdoray
2016/03/02 00:38:41
Done.
|
+ |
+ // Shutdown() shouldn't block. |
+ tracker_.Shutdown(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, PostAndRunBeforeShutdown_SkipOnShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::SKIP_ON_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // Run the posted task. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ |
+ // Shutdown() shouldn't block. |
+ tracker_.Shutdown(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, PostAndRunBeforeShutdown_BlockShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // Run the posted task. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ |
+ // Shutdown() shouldn't block. |
+ tracker_.Shutdown(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostBeforeShutdownRunDuringShutdown_ContinueOnShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // Post a BLOCK_SHUTDOWN task just to block shutdown. Then, call Shutdown() |
+ // asynchronously. |
+ scoped_ptr<Task> blocking_task( |
+ PostTaskViaTracker(CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN))); |
+ CallShutdownAsync(); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Try to run |posted_task| via |tracker_|. It should not run. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(0U, num_run_tasks_); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Unblock shutdown by running the BLOCK_SHUTDOWN task. |
+ tracker_.RunTask(blocking_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ ExpectShutdownAsyncHasReturned(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostBeforeShutdownRunDuringShutdown_SkipOnShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::SKIP_ON_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // Post a BLOCK_SHUTDOWN task just to block shutdown. Then, call Shutdown() |
+ // asynchronously. |
+ scoped_ptr<Task> blocking_task( |
+ PostTaskViaTracker(CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN))); |
+ CallShutdownAsync(); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Try to run |posted_task| via |tracker_|. It should not run. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(0U, num_run_tasks_); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Unblock shutdown by running the BLOCK_SHUTDOWN task. |
+ tracker_.RunTask(blocking_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ ExpectShutdownAsyncHasReturned(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostBeforeShutdownRunDuringShutdown_BlockShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // Call Shutdown() asynchronously. It should block before there is a pending |
+ // BLOCK_SHUTDOWN task. |
+ CallShutdownAsync(); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Run the posted task. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ |
+ // The async call to Shutdown() should now return. |
+ ExpectShutdownAsyncHasReturned(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostBeforeShutdownRunAfterShutdown_ContinueOnShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // A call to Shutdown() should return immediately. |
+ tracker_.Shutdown(); |
+ |
+ // Try to run |posted_task| via |tracker_|. It should not run. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(0U, num_run_tasks_); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostBeforeShutdownRunAfterShutdown_SkipOnShutdown) { |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::SKIP_ON_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ |
+ // Post the task. |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // A call to Shutdown() should return immediately. |
+ tracker_.Shutdown(); |
+ |
+ // Try to run |posted_task| via |tracker_|. It should not run. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(0U, num_run_tasks_); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostBeforeShutdownRunAfterShutdown_BlockShutdown) { |
robliao
2016/03/01 22:29:42
I'm not sure this test should be here as it's not
fdoray
2016/03/02 00:38:41
Now I test that we get the expected failure with E
|
+ // It is not possible to run after shutdown a BLOCK_SHUTDOWN task that has |
+ // been posted before shutdown because Shutdown() won't return when there are |
+ // pending BLOCK_SHUTDOWN tasks. |
gab
2016/03/01 22:18:47
I think your code actually handles this (+ a DCHEC
fdoray
2016/03/02 00:38:41
Done.
|
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, |
+ PostAndRunDuringShutdown_ContinueOnShutdown) { |
+ // Post a BLOCK_SHUTDOWN task just to block shutdown. Then, call Shutdown() |
+ // asynchronously. |
+ scoped_ptr<Task> blocking_task( |
+ PostTaskViaTracker(CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN))); |
+ CallShutdownAsync(); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Try to post a CONTINUE_ON_SHUTDOWN task via |tracker_|. It should not work. |
+ EXPECT_EQ(nullptr, PostTaskViaTracker( |
+ CreateTask(TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)) |
+ .get()); |
+ |
+ // Since |tracker_| hasn't allowed the task to be posted, it can't be run. |
+ |
+ // Unblock shutdown by running the BLOCK_SHUTDOWN task. |
+ ExpectShutdownAsyncHasNotReturned(); |
+ tracker_.RunTask(blocking_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ ExpectShutdownAsyncHasReturned(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, PostAndRunDuringShutdown_SkipOnShutdown) { |
+ // Post a BLOCK_SHUTDOWN task just to block shutdown. Then, call Shutdown() |
+ // asynchronously. |
+ scoped_ptr<Task> blocking_task( |
+ PostTaskViaTracker(CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN))); |
+ CallShutdownAsync(); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Try to post a SKIP_ON_SHUTDOWN task via |tracker_|. It should not work. |
+ EXPECT_EQ(nullptr, PostTaskViaTracker( |
+ CreateTask(TaskShutdownBehavior::SKIP_ON_SHUTDOWN)) |
+ .get()); |
+ |
+ // Since |tracker_| hasn't allowed the task to be posted, it can't be run. |
+ |
+ // Unblock shutdown by running the BLOCK_SHUTDOWN task. |
+ ExpectShutdownAsyncHasNotReturned(); |
+ tracker_.RunTask(blocking_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ ExpectShutdownAsyncHasReturned(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, PostAndRunDuringShutdown_BlockShutdown) { |
+ // Post a BLOCK_SHUTDOWN task just to block shutdown. Then, call Shutdown() |
+ // asynchronously. |
+ scoped_ptr<Task> blocking_task( |
+ PostTaskViaTracker(CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN))); |
+ CallShutdownAsync(); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Post a BLOCK_SHUTDOWN task via |tracker_|. |
+ scoped_ptr<Task> task_to_post( |
+ CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ const Task* task_to_post_raw = task_to_post.get(); |
+ scoped_ptr<Task> posted_task(PostTaskViaTracker(std::move(task_to_post))); |
+ ASSERT_EQ(task_to_post_raw, posted_task.get()); |
+ |
+ // Run |posted_task| via |tracker_|. |
+ tracker_.RunTask(posted_task.get()); |
+ EXPECT_EQ(1U, num_run_tasks_); |
+ ExpectShutdownAsyncHasNotReturned(); |
+ |
+ // Unblock shutdown by running the BLOCK_SHUTDOWN task posted at the beginning |
+ // of the test. |
+ tracker_.RunTask(blocking_task.get()); |
+ EXPECT_EQ(2U, num_run_tasks_); |
+ ExpectShutdownAsyncHasReturned(); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, PostAfterShutdown_ContinueOnShutdown) { |
+ // It is not possible to post a task after shutdown. |
+ tracker_.Shutdown(); |
+ EXPECT_EQ(nullptr, PostTaskViaTracker( |
+ CreateTask(TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)) |
+ .get()); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, PostAfterShutdown_SkipOnShutdown) { |
+ // It is not possible to post a task after shutdown. |
+ tracker_.Shutdown(); |
+ EXPECT_EQ(nullptr, PostTaskViaTracker( |
+ CreateTask(TaskShutdownBehavior::SKIP_ON_SHUTDOWN)) |
+ .get()); |
+} |
+ |
+TEST_F(TaskSchedulerTaskTrackerTest, PostAfterShutdown_BlockShutdown) { |
+ // It is not possible to post a task after shutdown. |
+ tracker_.Shutdown(); |
+ EXPECT_EQ(nullptr, |
+ PostTaskViaTracker(CreateTask(TaskShutdownBehavior::BLOCK_SHUTDOWN)) |
+ .get()); |
+} |
gab
2016/03/01 22:18:47
To avoid the triad duplication for every test, how
robliao
2016/03/01 22:36:41
Duplication for tests should be okay. Given that w
fdoray
2016/03/02 00:38:41
I think it's a good idea to use a typed test to re
gab
2016/03/09 21:53:25
+1 to Francois' argument, readability is improved
|
+ |
+} // namespace internal |
+} // namespace base |