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Merge "Use mean CPU time in an attempt to reduce test flakiness"

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Giuliano Procida 2021-04-08 08:32:14 +00:00 committed by Gerrit Code Review
commit 7d06b37270
1 changed files with 7 additions and 3 deletions
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10
tests/time_test.cpp
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@ -851,11 +851,15 @@ TEST(time, clock_getres_unknown) {
}
TEST(time, clock) {
// clock(3) is hard to test, but a 1s sleep should cost less than 20ms.
// clock(3) is hard to test, but a 1s sleep should cost less than 10ms on average.
static const clock_t N = 5;
static const clock_t mean_limit_ms = 10;
clock_t t0 = clock();
sleep(1);
for (size_t i = 0; i < N; ++i) {
sleep(1);
}
clock_t t1 = clock();
ASSERT_LT(t1 - t0, 20 * (CLOCKS_PER_SEC / 1000));
ASSERT_LT(t1 - t0, N * mean_limit_ms * (CLOCKS_PER_SEC / 1000));
}
static pid_t GetInvalidPid() {