private/scheme/test/test-contract.rkt
#lang scheme

(require "checks.ss"
         "../contract.ss")

(provide contract-suite)

(define contract-suite
  (test-suite "contract.ss"
    (test-suite "Flat Contracts"
      (test-suite "nat/c"
        (test-ok (with/c nat/c 1))
        (test-ok (with/c nat/c 0))
        (test-bad (with/c nat/c -1))
        (test-bad (with/c nat/c 'non-numeric)))
      (test-suite "pos/c"
        (test-ok (with/c pos/c 1))
        (test-bad (with/c pos/c 0))
        (test-bad (with/c pos/c -1))
        (test-bad (with/c pos/c 'non-numeric)))
      (test-suite "truth/c"
        (test-ok (with/c truth/c #t))
        (test-ok (with/c truth/c #f))
        (test-ok (with/c truth/c '(x)))))
    (test-suite "Higher Order Contracts"
      (test-suite "thunk/c"
        (test-ok ([with/c thunk/c gensym]))
        (test-bad ([with/c thunk/c gensym] 'x))
        (test-bad ([with/c thunk/c cons])))
      (test-suite "unary/c"
        (test-ok ([with/c unary/c list] 'x))
        (test-bad ([with/c unary/c list] 'x 'y))
        (test-bad ([with/c unary/c cons] 1)))
      (test-suite "binary/c"
        (test-ok ([with/c binary/c +] 1 2))
        (test-bad ([with/c binary/c +] 1 2 3))
        (test-bad ([with/c binary/c symbol->string] 'x 'y)))
      (test-suite "predicate/c"
        (test-ok ([with/c predicate/c integer?] 1))
        (test-ok ([with/c predicate/c integer?] 1/2))
        (test-bad ([with/c predicate/c values] 'x)))
      (test-suite "predicate-like/c"
        (test-ok ([with/c predicate-like/c integer?] 1))
        (test-ok ([with/c predicate-like/c integer?] 1/2))
        (test-ok ([with/c predicate-like/c values] 'x)))
      (test-suite "comparison/c"
        (test-ok ([with/c comparison/c equal?] 1 1))
        (test-ok ([with/c comparison/c equal?] 1 2))
        (test-bad ([with/c comparison/c list] 1 2)))
      (test-suite "comparison-like/c"
        (test-ok ([with/c comparison-like/c equal?] 1 1))
        (test-ok ([with/c comparison-like/c equal?] 1 2))
        (test-ok ([with/c comparison-like/c list] 1 2))))
    (test-suite "Collection Contracts"
      (test-suite "sequence/c"
        (test-ok
         (for ([x (with/c (sequence/c integer?) (list 1 2 3 4))])
           (void)))
        (test-bad
         (for ([x (with/c (sequence/c integer?) (list 1 2 'c 4))])
           (void)))
        (test-bad
         (for ([x (with/c (sequence/c integer? symbol?) (list 1 2 3 4))])
           (void))))
      (test-suite "dict/c"
        (test-ok
         (for ([(x y)
                (in-dict
                 (with/c (dict/c integer? symbol?)
                         #hash([1 . a] [2 . b])))])
           (void)))
        (test-bad
         (for ([(x y)
                (in-dict
                 (with/c (dict/c integer? symbol?)
                         #hash([1 . a] [three . b])))])
           (void)))
        (test-bad
         (for ([(x y)
                (in-dict
                 (with/c (dict/c integer? symbol?)
                         #hash([1 . a] [2 . "b"])))])
           (void)))))))