}
# try giving it a duck
-ok ! exception { DucktypeTest->new( duck => Duck->new ) }, 'the Duck lives okay';
+is( exception { DucktypeTest->new( duck => Duck->new ) }, undef, 'the Duck lives okay' );
# try giving it a swan which is like a duck, but not close enough
-like exception { DucktypeTest->new( duck => Swan->new ) },
-qr/Swan is missing methods 'quack'/,
- "the Swan doesn't quack";
+like( exception { DucktypeTest->new( duck => Swan->new ) }, qr/Swan is missing methods 'quack'/, "the Swan doesn't quack" );
# try giving it a rubber RubberDuckey
-ok ! exception { DucktypeTest->new( swan => Swan->new ) }, 'but a Swan can honk';
+is( exception { DucktypeTest->new( swan => Swan->new ) }, undef, 'but a Swan can honk' );
# try giving it a rubber RubberDuckey
-ok ! exception { DucktypeTest->new( duck => RubberDuck->new ) },
-'the RubberDuck lives okay';
+is( exception { DucktypeTest->new( duck => RubberDuck->new ) }, undef, 'the RubberDuck lives okay' );
# try with the other constraint form
-ok ! exception { DucktypeTest->new( other_swan => Swan->new ) }, 'but a Swan can honk';
+is( exception { DucktypeTest->new( other_swan => Swan->new ) }, undef, 'but a Swan can honk' );
done_testing;