Testing code that utilizes operator overloading in Perl can be accomplished through a variety of methods, including unit testing with modules like Test::More. Below is an example demonstrating how to overload the addition operator and subsequently test its functionality.
package MyNumber;
use overload '+' => 'add';
sub new {
my ($class, $value) = @_;
return bless \$value, $class;
}
sub add {
my ($self, $other) = @_;
return MyNumber->new($$self + $$other);
}
package main;
my $num1 = MyNumber->new(5);
my $num2 = MyNumber->new(10);
my $result = $num1 + $num2; # This will invoke the overloaded '+' operator
print $$result; # Should output 15
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