error: Rhai functions cannot return pointers
  --> ui_tests/return_pointer.rs:12:33
   |
12 | pub fn test_fn(input: Clonable) -> *const str {
   |                                 ^

error[E0425]: cannot find function `test_fn` in this scope
  --> ui_tests/return_pointer.rs:24:19
   |
24 |         let ptr = test_fn(n);
   |                   ^^^^^^^ not found in this scope