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#!perl
# Test the $arg = undef optional syntax.
use strict;
use warnings FATAL => 'all';
use Test::More;
{
package Stuff;
use Test::More;
use Test::Fatal;
use Function::Parameters qw(:strict);
method whatever($this = undef) {
return $this;
}
is( Stuff->whatever(23), 23 );
method things($this = 99) {
return $this;
}
is( Stuff->things(), 99 );
method some_optional($that, $this = undef) {
return $that + ($this || 0);
}
is( Stuff->some_optional(18, 22), 18 + 22 );
is( Stuff->some_optional(18), 18 );
method named_params(:$this = undef, :$that = undef) {}
is exception { Stuff->named_params(this => 0) }, undef, 'can leave out some named params';
is exception { Stuff->named_params( ) }, undef, 'can leave out all named params';
# are slurpy parameters optional by default?
# (throwing in a default just for a little feature interaction test)
method slurpy_param($this, $that = 0, @other) {}
my @a = ();
is exception { Stuff->slurpy_param(0, 0, @a) }, undef, 'can pass empty array to slurpy param';
is exception { Stuff->slurpy_param(0, 0 ) }, undef, 'can omit slurpy param altogether';
is exception { Stuff->slurpy_param(0 ) }, undef, 'can omit other optional params as well as slurpy param';
}
done_testing;
|
