File: 20_policies.t

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#!perl

use 5.006001;
use strict;
use warnings;
use Test::More;
use English qw(-no_match_vars);

# common P::C testing tools
use Perl::Critic::Utils qw( :characters );
use Perl::Critic::TestUtils qw(
    pcritique_with_violations
    fcritique_with_violations
    subtests_in_tree
);
Perl::Critic::TestUtils::block_perlcriticrc();

my $subtests = subtests_in_tree( 't' );

# Check for cmdline limit on policies.  Example:
#   perl -Ilib t/20_policies.t BuiltinFunctions::ProhibitLvalueSubstr
# or
#   perl -Ilib t/20_policies.t t/BuiltinFunctions/ProhibitLvalueSubstr.run
if (@ARGV) {
    my @policies = keys %{$subtests}; # get a list of all tests
    # This is inefficient, but who cares...
    for (@ARGV) {
        next if m/::/xms;
        if (!s{\A t[\\/](\w+)[\\/](\w+)\.run \z}{$1\::$2}xms) {
            die 'Unknown argument ' . $_;
        }
    }
    for my $p (@policies) {
        if (0 == grep {$_ eq $p} @ARGV) {
            delete $subtests->{$p};
        }
    }
}

# count how many tests there will be
my $nsubtests = 0;
for my $s (values %$subtests) {
    $nsubtests += @$s; # one [pf]critique() test per subtest
}
my $npolicies = scalar keys %$subtests; # one can() test per policy

plan tests => $nsubtests + $npolicies;

for my $policy ( sort keys %$subtests ) {
    can_ok( "Perl::Critic::Policy::$policy", 'violates' );
    for my $subtest ( @{$subtests->{$policy}} ) {
        local $TODO = $subtest->{TODO}; # Is NOT a TODO if it's not set

        my $desc =
            join ' - ', $policy, "line $subtest->{lineno}", $subtest->{name};

        my @violations = $subtest->{filename}
            ? eval {
                fcritique_with_violations(
                    $policy,
                    \$subtest->{code},
                    $subtest->{filename},
                    $subtest->{parms},
                )
            }
            : eval {
                pcritique_with_violations(
                    $policy,
                    \$subtest->{code},
                    $subtest->{parms},
                )
            };
        my $err = $EVAL_ERROR;

        my $test_passed;
        if ($subtest->{error}) {
            if ( 'Regexp' eq ref $subtest->{error} ) {
                $test_passed = like($err, $subtest->{error}, $desc);
            }
            else {
                $test_passed = ok($err, $desc);
            }
        }
        elsif ($err) {
            if ($err =~ m/\A Unable [ ] to [ ] create [ ] policy [ ] [']/xms) {
                # We most likely hit a configuration that a parameter didn't like.
                fail($desc);
                diag($err);
                $test_passed = 0;
            }
            else {
                die $err;
            }
        }
        else {
            my $expected_failures = $subtest->{failures};

            # If any optional modules are NOT installed, then there should be no failures.
            if ($subtest->{optional_modules}) {
              MODULE:
                for my $module (split m/,\s*/xms, $subtest->{optional_modules}) {
                    eval "require $module";
                    if ($EVAL_ERROR) {
                        $expected_failures = 0;
                        last MODULE;
                    }
                }
            }

            $test_passed = is(scalar @violations, $expected_failures, $desc);
        }

        if (not $test_passed) {
            diag("Violation found: $_") foreach @violations;
        }
    }
}

#-----------------------------------------------------------------------------
# Local Variables:
#   mode: cperl
#   cperl-indent-level: 4
#   fill-column: 78
#   indent-tabs-mode: nil
#   c-indentation-style: bsd
# End:
# ex: set ts=8 sts=4 sw=4 tw=78 ft=perl expandtab shiftround :