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|
#!./perl
#
# This is a home for regular expression tests that don't fit into
# the format supported by re/regexp.t. If you want to add a test
# that does fit that format, add it to re/re_tests, not here.
#
# this file includes test that my burn a lot of CPU or otherwise be heavy
# on resources. Set env var $PERL_SKIP_PSYCHO_TEST to skip this file
use strict;
use warnings;
use 5.010;
sub run_tests;
$| = 1;
BEGIN {
chdir 't' if -d 't';
@INC = ('../lib','.');
require './test.pl';
if ($^O eq 'dec_osf') {
skip_all("$^O cannot handle this test");
}
}
skip_all('$PERL_SKIP_PSYCHO_TEST set') if $ENV{PERL_SKIP_PSYCHO_TEST};
plan tests => 15; # Update this when adding/deleting tests.
run_tests() unless caller;
#
# Tests start here.
#
sub run_tests {
print "# Set PERL_SKIP_PSYCHO_TEST to skip these tests\n";
{
# stress test tries
my @normal = qw [the are some normal words];
local $" = "|";
note "setting up trie psycho vars ...";
my @psycho = (@normal, map chr $_, 255 .. 20000);
my $psycho1 = "@psycho";
for (my $i = @psycho; -- $i;) {
my $j = int rand (1 + $i);
@psycho [$i, $j] = @psycho [$j, $i];
}
my $psycho2 = "@psycho";
foreach my $word (@normal) {
ok $word =~ /($psycho1)/ && $1 eq $word, qq{"$word" =~ /\$psycho1/};
ok $word =~ /($psycho2)/ && $1 eq $word, qq{"$word" =~ /\$psycho1/};
}
}
{
# stress test CURLYX/WHILEM.
#
# This test includes varying levels of nesting, and according to
# profiling done against build 28905, exercises every code line in the
# CURLYX and WHILEM blocks, except those related to LONGJMP, the
# super-linear cache and warnings. It executes about 0.5M regexes
no warnings 'regexp'; # Silence "has useless greediness modifier"
my $r = qr/^
(?:
( (?:a|z+)+ )
(?:
( (?:b|z+){3,}? )
(
(?:
(?:
(?:c|z+){1,1}?z
)?
(?:c|z+){1,1}
)*
)
(?:z*){2,}
( (?:z+|d)+ )
(?:
( (?:e|z+)+ )
)*
( (?:f|z+)+ )
)*
( (?:z+|g)+ )
(?:
( (?:h|z+)+ )
)*
( (?:i|z+)+ )
)+
( (?:j|z+)+ )
(?:
( (?:k|z+)+ )
)*
( (?:l|z+)+ )
$/x;
use warnings 'regexp';
my $ok = 1;
my $msg = "CURLYX stress test";
OUTER:
for my $a ("x","a","aa") {
for my $b ("x","bbb","bbbb") {
my $bs = $a.$b;
for my $c ("x","c","cc") {
my $cs = $bs.$c;
for my $d ("x","d","dd") {
my $ds = $cs.$d;
for my $e ("x","e","ee") {
my $es = $ds.$e;
for my $f ("x","f","ff") {
my $fs = $es.$f;
for my $g ("x","g","gg") {
my $gs = $fs.$g;
for my $h ("x","h","hh") {
my $hs = $gs.$h;
for my $i ("x","i","ii") {
my $is = $hs.$i;
for my $j ("x","j","jj") {
my $js = $is.$j;
for my $k ("x","k","kk") {
my $ks = $js.$k;
for my $l ("x","l","ll") {
my $ls = $ks.$l;
if ($ls =~ $r) {
if ($ls =~ /x/) {
$msg .= ": unexpected match for [$ls]";
$ok = 0;
last OUTER;
}
my $cap = "$1$2$3$4$5$6$7$8$9$10$11$12";
unless ($ls eq $cap) {
$msg .= ": capture: [$ls], got [$cap]";
$ok = 0;
last OUTER;
}
}
else {
unless ($ls =~ /x/) {
$msg = ": failed for [$ls]";
$ok = 0;
last OUTER;
}
}
}
}
}
}
}
}
}
}
}
}
}
}
ok($ok, $msg);
}
{
# these bits of test code used to run quadratically. If we break
# anything, they'll start to take minutes to run, rather than
# seconds. We don't actually measure times or set alarms, since
# that tends to be very fragile and prone to false positives.
# Instead, just hope that if someone is messing with
# performance-related code, they'll re-run the test suite and
# notice it suddenly takes a lot longer.
my $x;
$x = 'x' x 1_000_000;
1 while $x =~ /(.)/g;
pass "ascii =~ /(.)/";
{
local ${^UTF8CACHE} = 1; # defeat debugging
$x = "\x{100}" x 1_000_000;
1 while $x =~ /(.)/g;
pass "utf8 =~ /(.)/";
}
# run these in separate processes, since they set $&
fresh_perl_is(<<'EOF', "ok\n", {}, 'ascii =~ /(.)/, mention $&');
$&;
$x = 'x' x 1_000_000;
1 while $x =~ /(.)/g;
print "ok\n";
EOF
fresh_perl_is(<<'EOF', "ok\n", {}, 'utf8 =~ /(.)/, mention $&');
$&;
local ${^UTF8CACHE} = 1; # defeat debugging
$x = "\x{100}" x 1_000_000;
1 while $x =~ /(.)/g;
print "ok\n";
EOF
}
} # End of sub run_tests
1;
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