use Test::More 'no_plan';
use Test::Deep;

my $x = { foo => 42 };
my $y = bless { foo => 42 }, 'SomeClass';

is_deeply(  $x, $y, 'is_deeply ignores bless' );
cmp_deeply( $x, $y, 'cmp_deeply does not ignore bless' );

__END__

ok 1 - is_deeply ignores bless
not ok 2 - cmp_deeply does not ignore bless
#     Failed test (foo.pl at line 12)
# Compared blessed($data)
#    got : undef
# expect : 'SomeClass'
1..2