use strict;
BEGIN {
require Time::HiRes;
unless(&Time::HiRes::d_hires_stat) {
require Test::More;
Test::More::plan(skip_all => "no hi-res stat");
}
if($^O =~ /\A(?:cygwin|MSWin)/) {
require Test::More;
Test::More::plan(skip_all =>
"$^O file timestamps not reliable enough for stat test");
}
}
use Test::More 0.82 tests => 16;
use t::Watchdog;
my $limit = 0.25; # 25% is acceptable slosh for testing timers
my @atime;
my @mtime;
for (1..5) {
Time::HiRes::sleep(rand(0.1) + 0.1);
open(X, ">$$");
print X $$;
close(X);
my($a, $stat, $b) = ("a", [Time::HiRes::stat($$)], "b");
is $a, "a";
is $b, "b";
is ref($stat), "ARRAY";
push @mtime, $stat->[9];
Time::HiRes::sleep(rand(0.1) + 0.1);
open(X, "<$$");
<X>;
close(X);
$stat = [Time::HiRes::stat($$)];
push @atime, $stat->[8];
}
1 while unlink $$;
note "mtime = @mtime";
note "atime = @atime";
my $ai = 0;
my $mi = 0;
my $ss = 0;
for (my $i = 1; $i < @atime; $i++) {
if ($atime[$i] >= $atime[$i-1]) {
$ai++;
}
if ($atime[$i] > int($atime[$i])) {
$ss++;
}
}
for (my $i = 1; $i < @mtime; $i++) {
if ($mtime[$i] >= $mtime[$i-1]) {
$mi++;
}
if ($mtime[$i] > int($mtime[$i])) {
$ss++;
}
}
note "ai = $ai, mi = $mi, ss = $ss";
# Need at least 75% of monotonical increase and
# 20% of subsecond results. Yes, this is guessing.
SKIP: {
skip "no subsecond timestamps detected", 1 if $ss == 0;
ok $mi/(@mtime-1) >= 0.75 && $ai/(@atime-1) >= 0.75 &&
$ss/(@mtime+@atime) >= 0.2;
}
1;