#lang typed/racket

(require typed-struct-props
         typed/rackunit)

(struct/props foo ([f : Number]) #:transparent
              #:property prop:equal+hash (list (λ (a b rec) #f)
                                               (λ (a rec) 42)
                                               (λ (a rec) 43)))

(struct/props bar ([f : Number]) #:transparent)

(test-not-exn "The structure's constructor and type work properly"
              (λ () (ann (foo 12) foo)))

(test-equal? "The structure's constructor and accessor work properly"
             (ann (foo-f (foo 12)) Number)
             12)

(test-begin
 (test-false "The equal? function supplied to #:equal+hash is used"
             (equal? (foo 0) (foo 0)))
  
 (test-true "When unspecified, the default implementation of equal? is used"
             (equal? (bar 0) (bar 0))))

(test-equal? "The equal-hash-code function supplied to #:equal+hash is used"
             (equal-hash-code (foo 34))
             (equal-hash-code (foo 56)))

(test-equal?
 "The equal-secondary hash-code function supplied to #:equal+hash is used"
 (equal-secondary-hash-code (foo 78))
 (equal-secondary-hash-code (foo 90)))