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Fix issue 20145 - Random unittest failures in std.datetime.stopwatch #7186

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merged 1 commit into from Sep 19, 2019
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Fix issue 20145 - Random unittest failures in std.datetime.stopwatch #7186

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10 changes: 6 additions & 4 deletions std/datetime/stopwatch.d
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Original file line number Diff line number Diff line change
Expand Up @@ -453,12 +453,14 @@ Duration[fun.length] benchmark(fun...)(uint n)
if (getpid == 1) // never happens, but prevents optimization
printf("%p", &b);
}

auto sw = StopWatch(AutoStart.yes);
auto r = benchmark!(f0, f1)(1000);
auto total = sw.peek();
assert(r[0] >= Duration.zero);
assert(r[1] > Duration.zero);
assert(r[1] > r[0]);
assert(r[0] < seconds(1));
assert(r[1] < seconds(1));
assert(r[1] >= Duration.zero);
assert(r[0] <= total);
assert(r[1] <= total);
}

@safe nothrow @nogc unittest
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