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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.
##################
#Bugzilla Test 10#
## dependencies ##
use 5.10.1;
use strict;
use warnings;
use lib qw(. lib t);
use Support::Files;
use Test::More qw(no_plan);
my %mods;
my %deps;
use constant MODULE_REGEX => qr/
(?:(?:^\s*use)
|
(?:^require)
)\s+
['"]?
([\w:\.\\]+)
/x;
use constant BASE_REGEX => qr/^use (?:base|parent) (?:-norequire, )?qw\(([^\)]+)/;
# Extract all Perl modules.
foreach my $file (@Support::Files::testitems) {
if ($file =~ /^(.*)\.pm$/) {
my $module = $1;
$module =~ s#/#::#g;
$mods{$module} = $file;
}
}
foreach my $module (keys %mods) {
my $reading = 1;
my @use;
open(SOURCE, $mods{$module});
while (my $line = <SOURCE>) {
last if ($line =~ /^__END__/);
if ($line =~ /^=cut/) {
$reading = 1;
next;
}
next unless $reading;
if ($line =~ /^=(head|over|item|back|pod|begin|end|for)/) {
$reading = 0;
next;
}
if ($line =~ /^package\s+([^;]);/) {
$module = $1;
}
elsif ($line =~ BASE_REGEX or $line =~ MODULE_REGEX) {
my $used_string = $1;
# "use base"/"use parent" can have multiple modules
my @used_array = split(/\s+/, $used_string);
foreach my $used (@used_array) {
next if $used !~ /^Bugzilla/;
$used =~ s#/#::#g;
$used =~ s#\.pm$##;
$used =~ s#\$module#[^:]+#;
$used =~ s#\$\{[^}]+\}#[^:]+#;
$used =~ s#[" ]##g;
push(@use, grep(/^\Q$used\E$/, keys %mods));
}
}
}
close (SOURCE);
foreach my $u (@use) {
if (!grep {$_ eq $u} @{$deps{$module}}) {
push(@{$deps{$module}}, $u);
}
}
}
sub creates_loop {
my ($module, $used_module) = @_;
my @list = ($used_module);
my %seen;
while (my $next = shift @list) {
if ($module eq $next) {
ok(0, "Dependency on $used_module from $module causes loop. --ERROR");
return;
}
if (!$seen{$next}) {
push(@list, @{$deps{$next}}) if defined $deps{$next};
}
$seen{$next} = 1;
}
ok(1, "No dependency loop between $module and $used_module");
}
foreach my $module (keys %deps) {
foreach my $used_module (@{$deps{$module}}) {
creates_loop($module, $used_module);
}
}
exit 0;
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