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Fix pattern matching logic for logs in TAP tests of pgbench 

The logic checking for the format of per-thread logs used grep() with
directly "$re", which would cause the test to consider all the logs as
a match without caring about their format at all.  Using "/$re/" makes
grep() perform a regex test, which is what we want here.

While on it, improve some of the tests to be more picky with the
patterns expected and add more comments to describe the tests.

Issue discovered while digging into a separate patch.

Author: Fabien Coelho, Michael Paquier
Discussion: https://postgr.es/m/YNPsPAUoVDCpPOGk@paquier.xyz
Backpatch-through: 11
This commit is contained in:
Michael Paquier 2021-06-25 06:52:56 +09:00
parent c6cb62f613
commit 0efd2a1a66
1 changed files with 15 additions and 10 deletions
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25
src/bin/pgbench/t/001_pgbench_with_server.pl
View File

@ -816,7 +816,12 @@ sub list_files
return map { $dir . '/' . $_ } @files;
}
# check log contents and cleanup
# Check log contents and clean them up:
# $dir: directory holding logs
# $prefix: file prefix for per-thread logs
# $nb: number of expected files
# $min/$max: minimum and maximum number of lines in log files
# $re: regular expression each log line has to match
sub check_pgbench_logs
{
my ($dir, $prefix, $nb, $min, $max, $re) = @_;
@ -835,7 +840,7 @@ sub check_pgbench_logs
my $clen = @contents;
ok( $min <= $clen && $clen <= $max,
"transaction count for $log ($clen)");
ok( grep($re, @contents) == $clen,
ok( grep(/$re/, @contents) == $clen,
"transaction format for $prefix");
close $fh or die "$@";
};
@ -846,7 +851,7 @@ sub check_pgbench_logs
my $bdir = $node->basedir;
# with sampling rate
# Run with sampling rate, 2 clients with 50 transactions each.
pgbench(
"-n -S -t 50 -c 2 --log --sampling-rate=0.5",
0,
@ -855,19 +860,19 @@ pgbench(
'pgbench logs',
undef,
"--log-prefix=$bdir/001_pgbench_log_2");
# The IDs of the clients (1st field) in the logs should be either 0 or 1.
check_pgbench_logs($bdir, '001_pgbench_log_2', 1, 8, 92,
qr{^0 \d{1,2} \d+ \d \d+ \d+$});
qr{^[01] \d{1,2} \d+ \d \d+ \d+$});
# check log file in some detail
# Run with different read-only option pattern, 1 client with 10 transactions.
pgbench(
"-n -b se -t 10 -l",
0, [ qr{select only}, qr{processed: 10/10} ], [ qr{^$} ],
"-n -b select-only -t 10 -l", 0,
[ qr{select only}, qr{processed: 10/10} ], [qr{^$}],
'pgbench logs contents', undef,
"--log-prefix=$bdir/001_pgbench_log_3");
# The ID of a single client (1st field) should match 0.
check_pgbench_logs($bdir, '001_pgbench_log_3', 1, 10, 10,
qr{^\d \d{1,2} \d+ \d \d+ \d+$});
qr{^0 \d{1,2} \d+ \d \d+ \d+$});
# done
$node->stop;