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|
#!/usr/bin/env 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;
use File::Temp qw();
use PerconaTest;
require "$trunk/bin/pt-diskstats";
# Re-open STDIN to /dev/null before the tieing magic, to avoid
# a bug in older Perls.
open STDIN, "<", "/dev/null";
# pt-diskstats is an interactive-only tool. It waits for user input
# (i.e. menu commands) via STDIN. So we cannot just run it with input,
# get ouput, then test that output. We have to tie STDIN to these subs
# so that we can fake sending pt-diskstats menu commands via STDIN.
# All we do is send 'q', the command to quit. See the note in the bottom
# of this file about *DATA. Please don't close it.
my $called_seek_on_handle = 0;
{
$TestInteractive::first = 1;
sub TestInteractive::TIEHANDLE {
my ($class, @cmds) = @_;
push @cmds, "q";
return bless \@cmds, $class;
}
sub TestInteractive::FILENO {
return fileno(*DATA);
}
sub TestInteractive::READLINE {
my ($self) = @_;
my $cmd = shift @$self;
return unless $cmd;
print $cmd if $cmd =~ /\n/ && !-t STDOUT;
if ($cmd =~ /^TS/) {
if ( $TestInteractive::first ) {
$TestInteractive::first = 0;
}
else {
splice @$self, 1, 0, (undef) x 50;
}
}
return $cmd;
}
sub TestInteractive::EOF {
my ($self) = @_;
return @$self ? undef : 1;
}
sub TestInteractive::CLOSE { 1 }
sub TestInteractive::TELL {}
sub TestInteractive::SEEK {
$called_seek_on_handle++;
}
}
sub test_diskstats_file {
my (%args) = @_;
my $file = "$trunk/t/pt-diskstats/samples/$args{file}";
my @commands = @{ $args{commands} || [qw( q )] };
my $print_cmds = join "][",
map {
( my $x = $_ ) =~ s/\n/\\n/g;
$x
} @commands;
my @options = $args{options}
? @{ $args{options} }
: (
'--show-inactive',
'--headers', '',
'--columns-regex','cnc|rt|mb|busy|prg',
);
die "$file does not exist" unless -f $file;
foreach my $groupby ( qw(all disk sample) ) {
my $expect_file = "${groupby}_int_$args{file}";
ok(
no_diff(
sub {
tie local *STDIN, TestInteractive => @commands;
local $PerconaTest::DONT_RESTORE_STDIN =
$PerconaTest::DONT_RESTORE_STDIN = 1;
pt_diskstats::main(
@options,
'--group-by', $groupby,
$file);
},
"t/pt-diskstats/expected/$expect_file",
),
"$args{file} --group-by $groupby, commands: [$print_cmds]"
) or diag($expect_file, $test_diff);
}
}
foreach my $file ( map "diskstats-00$_.txt", 1..5 ) {
test_diskstats_file(file => $file);
}
test_diskstats_file(
file => "switch_to_sample.txt",
commands => [ qw( S q ) ]
);
test_diskstats_file(
file => "commands.txt",
commands => [ "i", "/", "cciss\n", "q" ]
);
test_diskstats_file(
file => "small.txt",
options => [ '--headers', '', '--columns-regex','time', ],
);
# ###########################################################################
# --group-by sample + --devices-regex show the wrong device name
# https://bugs.launchpad.net/percona-toolkit/+bug/1035311
# ###########################################################################
test_diskstats_file(
file => "bug-1035311.txt",
commands => [ "S", "/", 'xvdb1', "q" ],
options => [ '--headers', ''],
);
# ###########################################################################
# --save-samples and --iterations
# ###########################################################################
my (undef, $tempfile) = File::Temp::tempfile(
"/tmp/pt-diskstats.test.XXXXXX",
OPEN => 0,
);
my $iterations = 2;
my $out = output( sub {
pt_diskstats::main(
"--group-by" => "all",
"--columns-regex" => "cnc|rt|mb|busy|prg",
"--save-samples" => $tempfile,
"--iterations" => $iterations,
"--show-inactive",
);
});
open my $samples_fh, "<", $tempfile
or die "Cannot open $tempfile: $OS_ERROR";
my $count;
while (my $line = <$samples_fh>) {
$count++ if $line =~ /^TS/;
}
close $samples_fh or diag($EVAL_ERROR);
unlink $tempfile or diag($EVAL_ERROR);
ok(
($count == $iterations) || ($count == $iterations+1),
"--save-samples and --iterations work"
);
# ###########################################################################
# Done.
# ###########################################################################
done_testing;
__DATA__
Leave this here!
We tie STDIN during the tests, and fake the fileno by giving it *DATA's result;
These lines here make Perl leave *DATA open.
|
