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1 // Copyright 2013 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 #ifndef MOJO_EDK_SYSTEM_TEST_UTILS_H_ | |
6 #define MOJO_EDK_SYSTEM_TEST_UTILS_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "base/time/time.h" | |
10 | |
11 namespace mojo { | |
12 namespace system { | |
13 namespace test { | |
14 | |
15 // A timeout smaller than |TestTimeouts::tiny_timeout()|. Warning: This may lead | |
16 // to flakiness, but this is unavoidable if, e.g., you're trying to ensure that | |
17 // functions with timeouts are reasonably accurate. We want this to be as small | |
18 // as possible without causing too much flakiness. | |
19 base::TimeDelta EpsilonTimeout(); | |
20 | |
21 // Stopwatch ------------------------------------------------------------------- | |
22 | |
23 // A simple "stopwatch" for measuring time elapsed from a given starting point. | |
24 class Stopwatch { | |
25 public: | |
26 Stopwatch() {} | |
27 ~Stopwatch() {} | |
28 | |
29 void Start() { start_time_ = base::TimeTicks::Now(); } | |
30 | |
31 base::TimeDelta Elapsed() { return base::TimeTicks::Now() - start_time_; } | |
32 | |
33 private: | |
34 base::TimeTicks start_time_; | |
35 | |
36 DISALLOW_COPY_AND_ASSIGN(Stopwatch); | |
37 }; | |
38 | |
39 } // namespace test | |
40 } // namespace system | |
41 } // namespace mojo | |
42 | |
43 #endif // MOJO_EDK_SYSTEM_TEST_UTILS_H_ | |
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