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|
=pod
=encoding utf-8
=head1 PURPOSE
Create named functions with C<fun>.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2013-2014, 2017 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;
{
package Example;
use Kavorka;
fun foo {
return { '@_' => \@_ };
}
fun bar () {
return { '@_' => \@_ };
}
fun Example2::baz (my $x, $y) {
return { '@_' => \@_, '$x' => \$x, '$y' => \$y };
}
fun ::quux ($x, $y, ...) {
return { '@_' => \@_, '$x' => \$x, '$y' => \$y };
}
fun my $xyzzy ($x) {
return { '$x' => \$x };
}
fun XYZZY ($x) {
return $xyzzy->($x);
}
::ok(
::exception { $xyzzy = 42 },
'cannot rebind the lexical function'
);
{
fun my $xyzzy () { 42 };
::is($xyzzy->(), 42, 'can redefine lexical function in another scope');
}
}
is_deeply(
Example::foo(),
{ '@_' => [] },
'named function with no signature; called with empty list',
);
is_deeply(
Example::foo(1..4),
{ '@_' => [1..4] },
'named function with no signature; called with arguments',
);
is_deeply(
Example::bar(),
{ '@_' => [] },
'named function with empty signature',
);
#line 68
like(
exception { Example::bar(1..4) },
qr{\AExpected 0 parameters at \S+ line 69},
'named function with empty signature throws exception if passed arguments',
);
is_deeply(
Example2::baz(1..2),
{ '@_' => [1..2], '$x' => \1, '$y' => \2 },
'named function with positional parameters',
);
#line 81
like(
exception { Example2::baz(1..4) },
qr{\AExpected 2 parameters at \S+ line 82},
'named function with positional parameters throws exception if passed too many arguments',
);
#line 88
like(
exception { Example2::baz(1) },
qr{\AExpected 2 parameters at \S+ line 89},
'named function with positional parameters throws exception if passed too few arguments',
);
#line 95
is(
exception { Example2::baz(undef, undef) },
undef,
'an explicit undef satisfies positional parameters',
);
is_deeply(
quux(1..2),
{ '@_' => [1..2], '$x' => \1, '$y' => \2 },
'named function with positional parameters and yadayada',
);
#line 108
is(
exception { quux(1..4) },
undef,
'named function with positional parameters and yadayada throws no exception if passed too many arguments',
);
#line 115
like(
exception { quux(1) },
qr{\AExpected at least 2 parameters at \S+ line 116},
'named function with positional parameters and yadayada throws exception if passed too few arguments',
);
#line 121
is(
exception { quux(undef, undef) },
undef,
'an explicit undef satisfies positional parameters with yadayada',
);
is_deeply(
Example::XYZZY(42),
{ '$x' => \42 },
'lexical subs',
);
{ package Example3; use Kavorka; fun xxx { } };
is_deeply(
[ Example3::xxx(1..3) ],
[],
'an empty function body returns nothing',
);
done_testing;
|
