| (define-macro (check test) |
| `(if (not ,test) (error "Error in test" ',test))) |
| |
| (b "hello") |
| (check (string=? (b) "hello")) |
| |
| (define sa (make <A>)) |
| (slot-set! sa 'x 5) |
| (a sa) |
| (check (= (slot-ref (a) 'x) 5)) |
| |
| (ap sa) |
| (check (= (slot-ref (ap) 'x) 5)) |
| (slot-set! sa 'x 10) |
| (check (= (slot-ref (ap) 'x) 10)) |
| |
| (define sa2 (make <A>)) |
| (slot-set! sa2 'x -4) |
| (cap sa2) |
| (check (= (slot-ref (cap) 'x) -4)) |
| (slot-set! sa2 'x -7) |
| (check (= (slot-ref (cap) 'x) -7)) |
| |
| (check (= (slot-ref (ar) 'x) 5)) |
| (ar sa2) |
| (check (= (slot-ref (ar) 'x) -7)) |
| |
| (x 4) |
| (check (= (x) 4)) |
| |
| (exit 0) |
