examples/mocking-functions/linewrap_snippet.t
$mock->add(get => sub {
    return 'Beyonce Miley Cyrus Miley
Cyrus';
});
is_deeply $w->count_strings('Beyonce', 'Miley Cyrus'), 
    {
        Beyonce => 1,
        'Miley Cyrus' => 2,
    };
1..4
ok 1
ok 2
ok 3
not ok 4
#   Failed test at linewrap.t line 46.
#     Structures begin differing at:
#          $got->{Miley Cyrus} = '1'
#     $expected->{Miley Cyrus} = '2'
# Looks like you failed 1 test of 4.