-ok($c == 2, 'len : get length 0');
-ok($b == 0, 'len : get length 0 correctly');
+is($c, 3, 'len : get array length 0');
+is($b, 0, 'len : get array length 0 correctly');
+
+$c = 0;
+$n = int rand 1000;
+# length magic on scalars needs also get magic to be triggered.
+$wiz = wizard get => sub { return 56478 },
+ len => sub { ++$c; return $n };
+
+my $x = int rand 1000;
+
+SKIP: {
+ skip 'length() no longer calls mg_len magic', 3 if VMG_COMPAT_SCALAR_LENGTH_NOLEN;
+
+ cast $x, $wiz;
+ is($c, 0, 'len : cast on scalar');
+
+ $b = length $x;
+ is($c, 1, 'len : get scalar length');
+ is($b, $n - 1, 'len : get scalar length correctly');
+}