1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
base / test / thread_test_helper.h [blame]
// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TEST_THREAD_TEST_HELPER_H_
#define BASE_TEST_THREAD_TEST_HELPER_H_
#include "base/memory/ref_counted.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/sequenced_task_runner.h"
namespace base {
// Helper class that executes code on a given target sequence/thread while
// blocking on the invoking sequence/thread. To use, derive from this class and
// overwrite RunTest. An alternative use of this class is to use it directly. It
// will then block until all pending tasks on a given sequence/thread have been
// executed.
class ThreadTestHelper : public RefCountedThreadSafe<ThreadTestHelper> {
public:
explicit ThreadTestHelper(scoped_refptr<SequencedTaskRunner> target_sequence);
ThreadTestHelper(const ThreadTestHelper&) = delete;
ThreadTestHelper& operator=(const ThreadTestHelper&) = delete;
// True if RunTest() was successfully executed on the target sequence.
[[nodiscard]] bool Run();
virtual void RunTest();
protected:
friend class RefCountedThreadSafe<ThreadTestHelper>;
virtual ~ThreadTestHelper();
// Use this method to store the result of RunTest().
void set_test_result(bool test_result) { test_result_ = test_result; }
private:
void RunOnSequence();
bool test_result_;
scoped_refptr<SequencedTaskRunner> target_sequence_;
WaitableEvent done_event_;
};
} // namespace base
#endif // BASE_TEST_THREAD_TEST_HELPER_H_