Question

Can someone please provide an example of using set_bound() method from Test::MockObject module?

Can set_bound() method return an instance of Test::MockObject (or any other object for that matter)

Answer 1

*“Can set_bound method return an instance of Test::MockObject (or any other object for that matter)”*

Yes. From the source:

sub set_bound {
    # ...
    return unless exists $bindings{reftype( $ref )};
    $self->mock( $name,  $bindings{reftype( $ref )} );
} # So this returns either undef, or result of mock() call

sub mock {
    #...
    $self;
} # So this CAN return an instance of Test::MockObject

*Can someone please provide an example of using set_bound method from Test::MockObject module?*

my $value = 'X';
$mock->set_bound( 'next_value', \$value );
is( $mock->next_value, 'X' );
$var = 'Y';
is( $mock->next_value, 'Y' ); # Method result changed to new value of the variable

Why use it? POD states “This is often handier than replacing mock methods”. I guess “handier” is in the eye of the beerholder, but it certainly is a nice shortcut to have available.