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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "base/task_scheduler/utils.h" |
| 6 |
| 7 #include <memory> |
| 8 |
| 9 #include "base/bind.h" |
| 10 #include "base/bind_helpers.h" |
| 11 #include "base/memory/ptr_util.h" |
| 12 #include "base/memory/ref_counted.h" |
| 13 #include "base/task_scheduler/priority_queue.h" |
| 14 #include "base/task_scheduler/sequence.h" |
| 15 #include "base/task_scheduler/task.h" |
| 16 #include "base/task_scheduler/task_tracker.h" |
| 17 #include "testing/gtest/include/gtest/gtest.h" |
| 18 |
| 19 namespace base { |
| 20 namespace internal { |
| 21 namespace { |
| 22 |
| 23 // Checks that when PostTaskNowHelper is called with an empty sequence, the task |
| 24 // is added to the sequence and the sequence is added to the priority queue. |
| 25 TEST(TaskSchedulerPostTaskNowHelperTest, PostTaskInEmptySequence) { |
| 26 std::unique_ptr<Task> task( |
| 27 new Task(FROM_HERE, Bind(&DoNothing), TaskTraits())); |
| 28 const Task* task_raw = task.get(); |
| 29 scoped_refptr<Sequence> sequence(new Sequence); |
| 30 PriorityQueue priority_queue; |
| 31 |
| 32 // Post |task|. |
| 33 EXPECT_TRUE(PostTaskNowHelper(std::move(task), sequence, &priority_queue)); |
| 34 |
| 35 // Expect to find the sequence in the priority queue. |
| 36 EXPECT_EQ(sequence, priority_queue.BeginTransaction()->Peek().sequence); |
| 37 |
| 38 // Expect to find |task| alone in |sequence|. |
| 39 EXPECT_EQ(task_raw, sequence->PeekTask()); |
| 40 sequence->PopTask(); |
| 41 EXPECT_EQ(nullptr, sequence->PeekTask()); |
| 42 } |
| 43 |
| 44 // Checks that when PostTaskNowHelper is called with a sequence that already |
| 45 // contains a task, the task is added to the sequence but the sequence is not |
| 46 // added to the priority queue. |
| 47 TEST(TaskSchedulerPostTaskNowHelperTest, PostTaskInNonEmptySequence) { |
| 48 std::unique_ptr<Task> task( |
| 49 new Task(FROM_HERE, Bind(&DoNothing), TaskTraits())); |
| 50 const Task* task_raw = task.get(); |
| 51 scoped_refptr<Sequence> sequence(new Sequence); |
| 52 PriorityQueue priority_queue; |
| 53 |
| 54 // Add an initial task in |sequence|. |
| 55 sequence->PushTask( |
| 56 WrapUnique(new Task(FROM_HERE, Bind(&DoNothing), TaskTraits()))); |
| 57 |
| 58 // Post |task|. |
| 59 EXPECT_FALSE(PostTaskNowHelper(std::move(task), sequence, &priority_queue)); |
| 60 |
| 61 // Expect to find the priority queue empty. |
| 62 EXPECT_TRUE(priority_queue.BeginTransaction()->Peek().is_null()); |
| 63 |
| 64 // Expect to find |task| in |sequence| behind the initial task. |
| 65 EXPECT_NE(task_raw, sequence->PeekTask()); |
| 66 sequence->PopTask(); |
| 67 EXPECT_EQ(task_raw, sequence->PeekTask()); |
| 68 sequence->PopTask(); |
| 69 EXPECT_EQ(nullptr, sequence->PeekTask()); |
| 70 } |
| 71 |
| 72 } // namespace |
| 73 } // namespace internal |
| 74 } // namespace base |
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