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#!/usr/bin/perl
BEGIN {
die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
};
use strict;
use warnings FATAL => 'all';
use English qw(-no_match_vars);
use Test::More tests => 6;
use WeightedAvgRate;
use PerconaTest;
my $rll = new WeightedAvgRate(
initial_n => 1000,
initial_t => 1,
target_t => 1,
);
# stay the same
for (1..5) {
$rll->update(1000, 1);
}
is(
$rll->update(1000, 1),
1000,
"Same rate, same n"
);
# slow down
for (1..5) {
$rll->update(1000, 2);
}
is(
$rll->update(1000, 2),
540,
"Decrease rate, decrease n"
);
for (1..15) {
$rll->update(1000, 2);
}
is(
$rll->update(1000, 2),
500,
"limit n=500 decreasing"
);
# speed up
for (1..5) {
$rll->update(1000, 1);
}
is(
$rll->update(1000, 1),
849,
"Increase rate, increase n"
);
for (1..20) {
$rll->update(1000, 1);
}
is(
$rll->update(1000, 1),
999,
"limit n=1000 increasing"
);
# #############################################################################
# Done.
# #############################################################################
my $output = '';
{
local *STDERR;
open STDERR, '>', \$output;
$rll->_d('Complete test coverage');
}
like(
$output,
qr/Complete test coverage/,
'_d() works'
);
exit;
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