262 lines
8.1 KiB
Scheme
262 lines
8.1 KiB
Scheme
#lang scheme/base
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(provide all-contract-tests)
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(require schemeunit
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deinprogramm/contract/contract
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deinprogramm/contract/contract-syntax)
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(require scheme/promise)
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(define integer (make-predicate-contract 'integer integer? 'integer-marker))
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(define boolean (make-predicate-contract 'boolean boolean? 'boolean-marker))
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(define %a (make-type-variable-contract 'a 'a-marker))
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(define %b (make-type-variable-contract 'b 'b-marker))
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(define-syntax say-no
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(syntax-rules ()
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((say-no ?body ...)
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(let/ec exit
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(call-with-contract-violation-proc
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(lambda (obj contract message blame)
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(exit 'no))
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(lambda ()
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?body ...))))))
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(define-syntax failed-contract
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(syntax-rules ()
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((say-no ?body ...)
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(let/ec exit
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(call-with-contract-violation-proc
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(lambda (obj contract message blame)
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(exit contract))
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(lambda ()
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?body ...))))))
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(define contract-tests
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(test-suite
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"Tests for contract combinators"
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(test-case
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"flat"
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(check-equal? (say-no (apply-contract integer 5)) 5)
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(check-equal? (say-no (apply-contract integer "foo")) 'no))
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(test-case
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"list"
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(define integer-list (make-list-contract 'integer-list integer #f))
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(check-equal? (say-no (apply-contract integer-list '(1 2 3)))
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'(1 2 3))
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(check-equal? (say-no (apply-contract integer-list '#f))
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'no)
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(check-eq? (failed-contract (apply-contract integer-list '(1 #f 3)))
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integer))
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(test-case
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"list-cached"
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(define integer-list (make-list-contract 'integer-list integer #f))
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(define boolean-list (make-list-contract 'integer-list boolean #f))
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(define l '(1 2 3))
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(define foo "foo")
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(define no '(1 #f 3))
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(define no2 '(1 #f 3))
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(define integer-list->bool (make-procedure-contract 'integer-list->bool (list integer-list) boolean 'int->bool-marker))
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(check-equal? (say-no (apply-contract integer-list l))
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'(1 2 3))
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(check-equal? (say-no (apply-contract integer-list l))
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'(1 2 3))
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(check-equal? (say-no (apply-contract boolean-list l))
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'no)
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(check-equal? (say-no (apply-contract integer-list foo))
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'no)
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(check-equal? (say-no (apply-contract integer-list foo))
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'no)
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(check-eq? (failed-contract (apply-contract integer-list no))
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integer)
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(check-eq? (failed-contract (apply-contract integer-list no))
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integer)
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(let ((proc (say-no (apply-contract integer-list->bool (lambda (l) (even? (car l)))))))
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(check-equal? (say-no (proc no)) 'no)
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(check-equal? (say-no (proc no)) 'no)
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(check-equal? (say-no (proc no2)) 'no)
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(check-equal? (say-no (proc no2)) 'no))
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)
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(test-case
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"mixed"
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(define int-or-bool (make-mixed-contract 'int-or-bool
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(list integer
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boolean)
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'int-or-bool-marker))
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(check-equal? (say-no (apply-contract int-or-bool #f))
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#f)
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(check-equal? (say-no (apply-contract int-or-bool 17))
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17)
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(check-equal? (say-no (apply-contract int-or-bool "foo"))
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'no))
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(test-case
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"combined"
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(define octet (make-combined-contract
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'octet
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(list
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integer
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(make-predicate-contract '<256
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(delay (lambda (x)
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(< x 256)))
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'<256-marker)
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(make-predicate-contract 'non-negative
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(delay (lambda (x)
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(>= x 0)))
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'non-negative-marker))
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'octet-marker))
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(check-equal? (say-no (apply-contract octet #f))
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'no)
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(check-equal? (say-no (apply-contract octet 17))
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17)
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(check-equal? (say-no (apply-contract octet 0))
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0)
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(check-equal? (say-no (apply-contract octet -1))
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'no)
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(check-equal? (say-no (apply-contract octet 255))
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255)
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(check-equal? (say-no (apply-contract octet 256))
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'no)
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(check-equal? (say-no (apply-contract octet "foo"))
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'no))
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(test-case
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"case"
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(define foo-or-bar (make-case-contract 'foo-or-bar '("foo" "bar") equal? 'foo-or-bar-marker))
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(check-equal? (say-no (apply-contract foo-or-bar #f))
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'no)
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(check-equal? (say-no (apply-contract foo-or-bar "foo"))
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"foo")
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(check-equal? (say-no (apply-contract foo-or-bar "bar"))
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"bar"))
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(test-case
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"procedure"
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(define int->bool (make-procedure-contract 'int->bool (list integer) boolean 'int->bool-marker))
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(check-equal? (say-no (apply-contract int->bool #f))
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'no)
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(check-equal? (say-no (apply-contract int->bool (lambda () "foo")))
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'no)
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(check-equal? (say-no (apply-contract int->bool (lambda (x y) "foo")))
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'no)
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(let ((proc (say-no (apply-contract int->bool (lambda (x) (odd? x))))))
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(check-pred procedure? proc)
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(check-equal? (proc 15) #t)
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(check-equal? (proc 16) #f)
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(check-equal? (say-no (proc "foo")) 'no))
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(let ((proc (say-no (apply-contract int->bool (lambda (x) (+ x 1))))))
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(check-equal? (say-no (proc 12)) 'no)))
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(test-case
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"type variable - simple"
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(check-equal? (say-no (apply-contract %a #f)) #f)
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(check-equal? (say-no (apply-contract %a 15)) 15))
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(test-case
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"type variable - list"
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(define a-list (make-list-contract 'a-list %a #f))
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(check-equal? (say-no (apply-contract a-list '(1 2 3)))
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'(1 2 3))
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(check-equal? (say-no (apply-contract a-list '#f))
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'no)
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(check-equal? (say-no (apply-contract a-list '(#f "foo" 5)))
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'(#f "foo" 5)))
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(test-case
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"apply-contract/blame"
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(define int->bool (make-procedure-contract 'int->bool (list integer) boolean 'int->bool-marker))
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(let ((proc (say-no (apply-contract/blame int->bool (lambda (x) (odd? x))))))
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(check-pred procedure? proc)
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(check-equal? (proc 15) #t)
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(check-equal? (proc 16) #f)
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(check-equal? (say-no (proc "foo")) 'no))
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(let ((proc (say-no (apply-contract/blame int->bool (lambda (x) x)))))
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(call-with-contract-violation-proc
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(lambda (obj contract message blame)
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(check-true (syntax? blame)))
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(lambda ()
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(proc 5)))))
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))
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(define contract-syntax-tests
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(test-suite
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"Tests for contract syntax"
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(test-case
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"predicate"
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(define integer (contract (predicate integer?)))
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(check-equal? (say-no (apply-contract integer 5)) 5)
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(check-equal? (say-no (apply-contract integer "foo")) 'no))
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(test-case
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"list"
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(check-equal? (say-no (apply-contract (contract x (list %a)) 5)) 'no)
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(check-equal? (say-no (apply-contract (contract x (list %a)) '(1 2 3))) '(1 2 3))
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(check-equal? (say-no (apply-contract (contract x (list (predicate integer?))) '(1 2 3))) '(1 2 3))
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(check-equal? (say-no (apply-contract (contract x (list (predicate integer?))) '(1 #f 3))) 'no))
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(test-case
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"mixed"
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(define int-or-bool (contract (mixed integer boolean)))
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(check-equal? (say-no (apply-contract int-or-bool #f))
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#f)
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(check-equal? (say-no (apply-contract int-or-bool 17))
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17)
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(check-equal? (say-no (apply-contract int-or-bool "foo"))
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'no))
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(test-case
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"combined"
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(define octet (contract (combined integer
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(predicate (lambda (x)
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(< x 256)))
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(predicate (lambda (x)
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(>= x 0))))))
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(check-equal? (say-no (apply-contract octet #f))
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'no)
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(check-equal? (say-no (apply-contract octet 17))
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17)
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(check-equal? (say-no (apply-contract octet 0))
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0)
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(check-equal? (say-no (apply-contract octet -1))
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'no)
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(check-equal? (say-no (apply-contract octet 255))
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255)
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(check-equal? (say-no (apply-contract octet 256))
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'no)
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(check-equal? (say-no (apply-contract octet "foo"))
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'no))
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(test-case
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"procedure"
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(define int->bool (contract int->bool ((predicate integer?) -> (predicate boolean?))))
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(check-equal? (say-no (apply-contract int->bool #f))
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'no)
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(check-equal? (say-no (apply-contract int->bool (lambda () "foo")))
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'no)
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(check-equal? (say-no (apply-contract int->bool (lambda (x y) "foo")))
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'no)
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(let ((proc (say-no (apply-contract int->bool (lambda (x) (odd? x))))))
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(check-pred procedure? proc)
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(check-equal? (proc 15) #t)
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(check-equal? (proc 16) #f)
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(check-equal? (say-no (proc "foo")) 'no))
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(let ((proc (say-no (apply-contract int->bool (lambda (x) (+ x 1))))))
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(check-equal? (say-no (proc 12)) 'no)))
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))
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(define all-contract-tests
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(test-suite
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"all-contract-tests"
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contract-tests
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contract-syntax-tests))
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