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|
=pod
=encoding utf-8
=head1 PURPOSE
Test L<Type::Params> positional parameters, a la the example in the
documentation:
sub nth_root
{
state $check = compile( Num, Num );
my ($x, $n) = $check->(@_);
return $x ** (1 / $n);
}
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2013-2014 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
use strict;
use warnings;
use Test::More;
use Test::Fatal;
use Type::Params qw(compile);
use Types::Standard qw(Num);
my $check;
sub nth_root
{
$check ||= compile( Num, Num );
[ $check->(@_) ];
}
is_deeply(
nth_root(1, 2),
[ 1, 2 ],
'(1, 2)',
);
is_deeply(
nth_root("1.1", 2),
[ "1.1", 2 ],
'(1.1, 2)',
);
{
my $e = exception { nth_root() };
like($e, qr{^Wrong number of parameters; got 0; expected 2}, '(1)');
}
{
my $e = exception { nth_root(1) };
like($e, qr{^Wrong number of parameters; got 1; expected 2}, '(1)');
}
{
my $e = exception { nth_root(undef, 1) };
like($e, qr{^Undef did not pass type constraint "Num" \(in \$_\[0\]\)}, '(undef, 1)');
}
{
my $e = exception { nth_root(1, 2, 3) };
like($e, qr{^Wrong number of parameters; got 3; expected 2}, '(1)');
}
done_testing;
|
