use strict;
use warnings;
-use Test::More tests => 20;
+use Test::More tests => 26;
{ package Foo; sub new { bless({}, $_[0]) } }
{ package Bar; our @ISA = qw(Foo); sub bar { 1 } }
ok($foo->$_isa('Foo'), 'foo $_isa Foo');
ok($bar->$_isa('Foo'), 'bar $_isa Foo');
-ok(eval { $blam->$_isa('Foo'); 1 }, 'no boom today');
-ok(eval { $undef->$_isa('Foo'); 1 }, 'nor tomorrow either');
+ok(eval { is($blam->$_isa('Foo'), undef, 'blam isn\'t Foo'); 1 }, 'no boom today');
+ok(eval { is($undef->$_isa('Foo'), undef, 'undef isn\'t Foo either'); 1 }, 'and no boom tomorrow either');
ok(!$foo->$_can('bar'), 'foo !$_can bar');
ok($bar->$_can('bar'), 'bar $_can bar');
-ok(eval { $blam->$_can('bar'); 1 }, 'no boom today');
-ok(eval { $undef->$_can('bar'); 1 }, 'nor tomorrow either');
+ok(eval { is($blam->$_can('bar'), undef, 'blam can\'t bar'); 1 }, 'no boom today');
+ok(eval { is($undef->$_can('bar'), undef, 'undef can\'t bar either'); 1 }, 'and no boom tomorrow either');
ok($foo->$_call_if_object(isa => 'Foo'), 'foo $_call_if_object(isa => Foo)');
ok($bar->$_call_if_object(isa => 'Foo'), 'bar $_call_if_object(isa => Foo)');
-ok(eval { $blam->$_call_if_object(isa => 'Foo'); 1 }, 'no boom today');
-ok(eval { $undef->$_call_if_object(isa => 'Foo'); 1 }, 'nor tomorrow either');
+ok(eval { is($blam->$_call_if_object(isa => 'Foo'), undef, 'blam can\'t call anything'); 1 }, 'no boom today');
+ok(eval { is($undef->$_call_if_object(isa => 'Foo'), undef, 'undef can\'t call anything'); 1 }, 'and no boom tomorrow either');