29 constexpr double kTIMING_TOLERANCE_MS = std::chrono::milliseconds(25).count();
41     auto start = std::chrono::steady_clock::now();  in TEST()
47     std::chrono::milliseconds expire_time;  in TEST()
60     std::chrono::milliseconds expire_time;  in TEST()
62     auto expect = std::chrono::duration_cast<std::chrono::milliseconds>(  in TEST()
63         ReqTime::max() - std::chrono::steady_clock::now());  in TEST()
73     auto start = std::chrono::steady_clock::now();  in TEST()
80     std::chrono::milliseconds expire_time;  in TEST()
82     EXPECT_EQ(std::chrono::milliseconds::max(), expire_time);  in TEST()
89     auto start = std::chrono::steady_clock::now();  in TEST()
93     std::chrono::milliseconds expire_time;  in TEST()
118     auto start = std::chrono::steady_clock::now();  in TEST()
123     std::chrono::milliseconds expire_time;  in TEST()
133     auto start = std::chrono::steady_clock::now();  in TEST()
138     std::chrono::milliseconds expire_time;  in TEST()
140     EXPECT_EQ(std::chrono::milliseconds::max(), expire_time);  in TEST()
150     auto start = std::chrono::steady_clock::now();  in TEST()
156     std::chrono::milliseconds expire_time;  in TEST()