184 lines
3.4 KiB
Perl
184 lines
3.4 KiB
Perl
package Test2::Compare::Meta;
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use strict;
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use warnings;
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use Test2::Compare::Delta();
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use Test2::Compare::Isa();
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use base 'Test2::Compare::Base';
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our $VERSION = '0.000139';
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use Test2::Util::HashBase qw/items/;
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use Carp qw/croak confess/;
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use Scalar::Util qw/reftype blessed/;
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sub init {
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my $self = shift;
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$self->{+ITEMS} ||= [];
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$self->SUPER::init();
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}
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sub name { '<META CHECKS>' }
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sub verify {
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my $self = shift;
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my %params = @_;
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return $params{exists} ? 1 : 0;
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}
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sub add_prop {
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my $self = shift;
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my ($name, $check) = @_;
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croak "prop name is required"
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unless defined $name;
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croak "check is required"
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unless defined $check;
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my $meth = "get_prop_$name";
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croak "'$name' is not a known property"
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unless $self->can($meth);
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if ($name eq 'isa') {
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if (blessed($check) && $check->isa('Test2::Compare::Wildcard')) {
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# Carry forward file and lines that are set in Test2::Tools::Compare::prop.
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$check = Test2::Compare::Isa->new(
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input => $check->expect,
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file => $check->file,
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lines => $check->lines,
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);
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} else {
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$check = Test2::Compare::Isa->new(input => $check);
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}
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}
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push @{$self->{+ITEMS}} => [$meth, $check, $name];
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}
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sub deltas {
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my $self = shift;
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my %params = @_;
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my ($got, $convert, $seen) = @params{qw/got convert seen/};
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my @deltas;
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my $items = $self->{+ITEMS};
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for my $set (@$items) {
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my ($meth, $check, $name) = @$set;
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$check = $convert->($check);
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my $val = $self->$meth($got);
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push @deltas => $check->run(
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id => [META => $name],
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got => $val,
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convert => $convert,
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seen => $seen,
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);
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}
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return @deltas;
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}
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sub get_prop_blessed { blessed($_[1]) }
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sub get_prop_reftype { reftype($_[1]) }
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sub get_prop_isa { $_[1] }
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sub get_prop_this { $_[1] }
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sub get_prop_size {
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my $self = shift;
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my ($it) = @_;
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my $type = reftype($it) || '';
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return scalar @$it if $type eq 'ARRAY';
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return scalar keys %$it if $type eq 'HASH';
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return undef;
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}
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1;
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__END__
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=pod
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=encoding UTF-8
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=head1 NAME
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Test2::Compare::Meta - Check library for meta-checks
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=head1 DESCRIPTION
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Sometimes in a deep comparison you want to run extra checks against an item
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down the chain. This library allows you to write a check that verifies several
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attributes of an item.
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=head1 DEFINED CHECKS
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=over 4
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=item blessed
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Lets you check that an item is blessed, and that it is blessed into the
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expected class.
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=item reftype
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Lets you check the reftype of the item.
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=item isa
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Lets you check if the item is an instance of the expected class.
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=item this
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Lets you check the item itself.
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=item size
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Lets you check the size of the item. For an arrayref this is the number of
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elements. For a hashref this is the number of keys. For everything else this is
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undef.
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=back
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=head1 SOURCE
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The source code repository for Test2-Suite can be found at
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F<https://github.com/Test-More/Test2-Suite/>.
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=head1 MAINTAINERS
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=over 4
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=item Chad Granum E<lt>exodist@cpan.orgE<gt>
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=back
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=head1 AUTHORS
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=over 4
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=item Chad Granum E<lt>exodist@cpan.orgE<gt>
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=back
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=head1 COPYRIGHT
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Copyright 2018 Chad Granum E<lt>exodist@cpan.orgE<gt>.
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This program is free software; you can redistribute it and/or
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modify it under the same terms as Perl itself.
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See F<http://dev.perl.org/licenses/>
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=cut
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