op

__END__
# NAME OP_HELEM fields
package Foo;
use fields qw(a b);
sub new {
    my $class = shift;
    return fields::new($class);
}
my Foo $f = Foo->new;
$f->{c} = 1;
EXPECT
No such class field "c" in variable $f of type Foo at - line 8.
########
# NAME OP_HSLICE fields
package Foo;
use fields qw(a b);
sub new {
    my $class = shift;
    return fields::new($class);
}
my Foo $f = Foo->new;
@$f{"a", "c"} = ( 1, 2 );
EXPECT
No such class field "c" in variable $f of type Foo at - line 8.
########
# NAME my sub
my sub foo { }
EXPECT
"my sub" not yet implemented at - line 1.
########
# NAME delete BAD
delete $x;
EXPECT
delete argument is not a HASH or ARRAY element or slice at - line 1.
########
# NAME exists BAD
exists $x;
EXPECT
exists argument is not a HASH or ARRAY element or a subroutine at - line 1.
########
# NAME exists non-sub
exists &foo()
EXPECT
exists argument is not a subroutine name at - line 1.