#!perl

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 $subtests = subtests_in_tree( 't' );
# Check for cmdline limit on policies.  Example:
#   perl -Ilib t/20_policies.t BuiltinFunctions::ProhibitLvalueSubstr
if (@ARGV) {
    my @policies = keys %{$subtests};
    # This is inefficient, but who cares...
    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 {
            $test_passed = is(scalar @violations, $subtest->{failures}, $desc);
        }

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

