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object.rktl
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object.rktl
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(load-relative "loadtest.rktl")
(require scheme/class)
(Section 'object)
;; ------------------------------------------------------------
;; Test syntax errors
(syntax-test #'class)
(syntax-test #'(class))
(syntax-test #'(class . object%))
(test #t class? (class object%))
(syntax-test #'(class object% . 10))
(error-test #'(send 7) (lambda (x) (and (exn:fail:syntax? x) (regexp-match "method" (exn-message x)))))
(error-test #'(send/apply 7) (lambda (x) (and (exn:fail:syntax? x) (regexp-match "method" (exn-message x)))))
(error-test #'(send/keyword-apply 7) (lambda (x) (and (exn:fail:syntax? x) (regexp-match "method" (exn-message x)))))
(error-test #'(send/keyword-apply 7 method) (lambda (x) (and (exn:fail:syntax? x) (regexp-match "list of keywords" (exn-message x)))))
(error-test #'(send/keyword-apply 7 method 8) (lambda (x) (and (exn:fail:syntax? x) (regexp-match "list of keyword arguments" (exn-message x)))))
(define (test-init/field init)
(teval #`(test #t class? (class object% (#,init))))
(syntax-test #`(class object% (#,init . x)))
(syntax-test #`(class object% (#,init 10)))
(syntax-test #`(class object% (#,init (x . 10))))
(syntax-test #`(class object% (#,init (x 10 10))))
(syntax-test #`(class object% (#,init (x 10 . 10))))
(syntax-test #`(class object% (#,init (10 10))))
(teval #`(test #t class? (class object% (#,init (x 10)))))
(syntax-test #`(class object% (#,init ((x) 10))))
(syntax-test #`(class object% (#,init ((x . y) 10))))
(syntax-test #`(class object% (#,init ((x y . z) 10))))
(syntax-test #`(class object% (#,init ((x y z) 10))))
(syntax-test #`(class object% (#,init ((x 10) 10))))
(syntax-test #`(class object% (#,init ((10 x) 10))))
(teval #`(test #t class? (class object% (#,init ((x y) 10)))))
(syntax-test #`(class object% (#,init ((x y) 10) . z)))
(syntax-test #`(class object% (#,init ((x y) 10) z)))
(syntax-test #`(class object% (#,init ((x y) 10) (z))))
(teval #`(test #t class? (class object% (#,init ((x y) 10) (z 5)))))
(syntax-test #`(class object% (#,init (x 10) y)))
(syntax-test #`(class object% (#,init (x 10)) (#,init y)))
(syntax-test #`(class object% (#,init x x)))
(syntax-test #`(class object% (#,init x) (#,init x)))
(syntax-test #`(class object% (#,init x) (#,init (x 10))))
(syntax-test #`(class object% (#,init (x 10)) (#,init (x 10))))
(syntax-test #`(class object% (#,init ((x y) 10)) (#,init (x 10))))
(syntax-test #`(class object% (#,init ((x y) 10)) (#,init ((x z) 10))))
(syntax-test #`(class object% (#,init ((x y) 10)) (#,init ((x z) 10))))
(syntax-test #`(class object% (#,init ((y x) 10)) (#,init ((z x) 10))))
(syntax-test #`(class object% (#,init x) (#,init x)))
(syntax-test #`(class object% (#,init x) (#,init (x 10))))
(syntax-test #`(class object% (#,init (x 10)) (#,init (x 10))))
(syntax-test #`(class object% (#,init ((x y) 10)) (#,init (x 10))))
(syntax-test #`(class object% (#,init ((x y) 10)) (#,init ((x z) 10))))
(syntax-test #`(class object% (#,init ((x y) 10)) (#,init ((x z) 10))))
(syntax-test #`(class object% (#,init ((y x) 10)) (#,init ((z x) 10))))
(teval #`(test #t class? (class object% (#,init ((x x) 10)))))
(teval #`(test #t class? (class object% (#,init ((x x) 10) ((y y) 10)))))
(teval #`(test #t class? (class object% (#,init ((x x) 10)) (#,init ((y y) 10)))))
(teval #`(test #t class? (class object% (#,init ((x y) 10)) (#,init ((y x) 10)))))
'ok)
(define (test-init init)
(teval #`(test #t class? (class object% (#,init x))))
(teval #`(test #t class? (class object% (#,init ((x y))))))
(test-init/field init)
(syntax-test #`(class object% (init-rest) (#,init y)))
(syntax-test #`(class object% (#,init x) (init-rest) (#,init y)))
(syntax-test #`(class object% (#,init y) (init-rest y)))
(teval #`(test #t class? (class object% (#,init [(x y)]) (init-rest y))))
'ok)
(test-init #'init)
(test-init #'init-field)
(test-init/field #'field)
(syntax-test #'(class object% (init-rest 10)))
(syntax-test #'(class object% (init-rest . x)))
(syntax-test #'(class object% (init-rest x y)))
(syntax-test #'(class object% (init-rest) (init-rest x)))
(syntax-test #'(class object% (init-rest x) (init-rest)))
(syntax-test #'(class object% (init-field (x 10)) (init y)))
(syntax-test #'(class object% (init (x 10)) (init-field y)))
(syntax-test #'(class object% (init-rest x) (init y)))
(syntax-test #'(class object% (init-rest x) (init-field y)))
(define to-override-class%
(class object%
(public x y)
(define (x) 1)
(define (y) 2)))
(define to-augment-class%
(class object%
(pubment x y)
(define (x) 1)
(define (y) 2)))
(define to-override2-class%
(class to-augment-class%
(augride x y)
(define (x) 1)
(define (y) 1)))
(define to-augment2-class%
(class to-override-class%
(overment x y)
(define (x) 1)
(define (y) 1)))
(define to-override3-class%
(class to-override2-class%
(oevrride x y)
(define (x) 1)
(define (y) 1)))
(define to-augment3-class%
(class to-augment2-class%
(augment x y)
(define (x) 1)
(define (y) 1)))
(define (test-method basic? public object% over? aug? super-ok? inner-ok? over-ok? aug-ok?)
(when basic?
(teval #`(test #t class? (class #,object% (#,public))))
(syntax-test #`(class #,object% (#,public . x)))
(syntax-test #`(class #,object% (#,public 10)))
(syntax-test #`(class #,object% (#,public (x))))
(syntax-test #`(class #,object% (#,public (x . y))))
(syntax-test #`(class #,object% (#,public (x 10))))
(syntax-test #`(class #,object% (#,public (10 x))))
(syntax-test #`(class #,object% (#,public x . y)))
(syntax-test #`(class #,object% (#,public x 10)))
(syntax-test #`(class #,object% (#,public x x)))
(syntax-test #`(class #,object% (#,public x) (#,public x)))
(syntax-test #`(class #,object% (#,public (x y) (x y))))
(syntax-test #`(class #,object% (#,public (x y1) (x y))))
(syntax-test #`(class #,object% (#,public (x y) (x2 y)))))
(unless (free-identifier=? public #'private)
(if (and (or (not over?) over-ok?)
(or (not aug?) aug-ok?))
(begin
(teval #`(test #t class? (class #,object% (#,public (x x)) (define (x) 1))))
(teval #`(test #t class? (class #,object% (#,public (x y) (y x)) (define (x) 1) (define (y) 2)))))
(begin
(teval #`(err/rt-test (class #,object% (#,public (x x)) (define (x) 1)) exn:fail:object?))
(teval #`(err/rt-test (class #,object% (#,public (x y) (y x)) (define (x) 1) (define (y) 2)) exn:fail:object?)))))
;; Use of external name for super/inner is always wrong (but
;; maybe because super/inner isn't allowed):
(syntax-test #`(class #,object% (#,public [x ex]) (define (x y) (super ex 12))))
(syntax-test #`(class #,object% (#,public [x ex]) (define (x y) (inner 5 ex 12))))
(let ([expr #`(class #,object%
(#,public x)
(define (x y) (super x 10)))])
(if (and super-ok? over-ok?)
(begin
(teval #`(test #t class? #,expr))
(teval #`(test #t class? (class #,object%
(#,public [ex x])
(define (ex y) (super ex 10))))))
(if super-ok?
(teval #`(err/rt-test #,expr exn:fail:object?))
(syntax-test expr))))
(let ([expr #`(class #,object%
(#,public x)
(define (x y) (inner 5 x 10)))])
(if (and inner-ok? aug? aug-ok?)
(begin
(teval #`(test #t class? #,expr))
(teval #`(test #t class? (class #,object%
(#,public [ex x])
(define (ex y) (inner 5 ex 10))))))
(if inner-ok?
(if (or (and aug? (not aug-ok?))
(and over? (not over-ok?)))
(teval #`(err/rt-test #,expr exn:fail:object?))
(teval #`(test #t class? #,expr)))
(syntax-test expr))))
'ok)
(test-method #t #'public #'object% #f #f #f #f #f #f)
(test-method #t #'public-final #'object% #f #f #f #f #f #f)
(test-method #t #'pubment #'object% #f #f #f #t #f #f)
(test-method #t #'private #'object% #f #f #f #f #f #f)
(define (test-over/aug to-override-class% to-augment-class%)
(test-method #t #'override to-override-class% #t #f #t #f #t #f)
(test-method #f #'override to-augment-class% #t #f #t #f #f #t)
(test-method #t #'override-final to-override-class% #t #f #t #f #t #f)
(test-method #f #'override-final to-augment-class% #t #f #t #f #f #t)
(test-method #t #'overment to-override-class% #t #f #t #t #t #f)
(test-method #f #'overment to-augment-class% #t #f #t #t #f #t)
(test-method #t #'augment to-override-class% #f #t #f #t #t #f)
(test-method #f #'augment to-augment-class% #f #t #f #t #f #t)
(test-method #t #'augment-final to-override-class% #f #t #f #f #t #f)
(test-method #f #'augment-final to-augment-class% #f #t #f #f #f #t)
(test-method #t #'augride to-override-class% #f #t #f #f #t #f)
(test-method #f #'augride to-augment-class% #f #t #f #f #f #t))
(test-over/aug #'to-override-class% #'to-augment-class%)
(test-over/aug #'to-override2-class% #'to-augment2-class%)
(test-over/aug #'to-override3-class% #'to-augment3-class%)
(define (test-rename rename object%)
(teval #`(test #t class? (class #,object% (#,rename))))
(teval #`(err/rt-test (class #,object% (#,rename [x x])) exn:fail:object?))
(teval #`(err/rt-test (class #,object% (#,rename [y x])) exn:fail:object?))
(teval #`(err/rt-test (class #,object% (#,rename [y x][z x])) exn:fail:object?))
(syntax-test #`(class #,object% (#,rename . x)))
(syntax-test #`(class #,object% (#,rename x)))
(syntax-test #`(class #,object% (#,rename [x 1])))
(syntax-test #`(class #,object% (#,rename [1 x])))
(syntax-test #`(class #,object% (#,rename [x 1 2])))
(syntax-test #`(class #,object% (#,rename [x y][x y])))
10)
(test-rename #'rename-super #'object%)
(test-rename #'rename-inner #'object%)
(define (test-abstract object%)
(syntax-test #`(class #,object% (abstract . x)))
(syntax-test #`(class #,object% (abstract 1)))
(syntax-test #`(class #,object% (abstract [x 1])))
(syntax-test #`(class #,object% (abstract [x y])))
(syntax-test #`(class #,object% (abstract [x 1 2])))
(syntax-test #`(class #,object% (abstract [x] [y]))))
(test-abstract #'object%)
(define (class-keyword-test kw)
(syntax-test kw)
(syntax-test #`(#,kw (x) 10)))
(class-keyword-test #'public)
(class-keyword-test #'public-final)
(class-keyword-test #'private)
(class-keyword-test #'pubment)
(class-keyword-test #'override)
(class-keyword-test #'override-final)
(class-keyword-test #'overment)
(class-keyword-test #'augment)
(class-keyword-test #'augment-final)
(class-keyword-test #'augride)
(class-keyword-test #'rename-super)
(class-keyword-test #'rename-inner)
(class-keyword-test #'inherit)
(class-keyword-test #'inherit-field)
(class-keyword-test #'public*)
(class-keyword-test #'private*)
(class-keyword-test #'pubment*)
(class-keyword-test #'override*)
(class-keyword-test #'overment*)
(class-keyword-test #'augment*)
(class-keyword-test #'augride*)
(class-keyword-test #'abstract)
(class-keyword-test #'define/public)
(class-keyword-test #'define/private)
(class-keyword-test #'define/pubment)
(class-keyword-test #'define/override)
(class-keyword-test #'define/overment)
(class-keyword-test #'define/augment)
(class-keyword-test #'define/augride)
(class-keyword-test #'super)
(class-keyword-test #'inner)
(class-keyword-test #'this)
(class-keyword-test #'this%)
(class-keyword-test #'super-new)
(class-keyword-test #'super-make-object)
(class-keyword-test #'super-instantiate)
(class-keyword-test #'inspect)
;; ------------------------------------------------------------
;; Test basic functionality
(define eater<%> (interface () eat))
(define-syntax mk-noop
(syntax-rules
()
[(_ name)
(begin
(define (name) (blah))
(define (blah)
(printf "hi\n")))]))
(define fish%
(class* object% (eater<%>)
(public get-size grow eat)
(public-final noop)
(mk-noop noop)
(private increase-size eat-sized-fish)
(init-field [size 1])
;; Private methods
(define (increase-size s)
(set! size (+ s size)))
(define (eat-sized-fish s)
(grow s))
;; Public methods
(define (get-size) size)
(define (grow s)
(noop)
(set! size (+ s size))
size)
(define (eat f)
(let ([this 5]) ; <- make sure methods still work...
(grow (send f get-size))))
(super-instantiate ())))
(define fish1 (make-object fish% 10))
(define fish2 (make-object fish% 100))
(test 10 'f1 (send fish1 get-size))
(test 100 'f2 (send fish2 get-size))
(test 12 'g1 (send fish1 grow 2))
(test 103 'g2 (send fish2 grow 3))
(test 115 'e (send fish2 eat fish1))
(define fish-size (class-field-accessor fish% size))
(test 12 fish-size fish1)
(test 115 fish-size fish2)
(define color-fish%
(class fish%
(pubment die)
(public-final die2)
(inherit get-size)
(inherit-field size)
(init-field [color 'red])
(define (die)
(unless (= size (get-size))
(error 'bad))
(set! color 'black))
(define (die2) (die))
(super-new)))
(define blue-fish (instantiate color-fish% () (color 'blue) (size 10)))
(define red-fish (instantiate color-fish% () (size 1)))
(define color-fish-color (class-field-accessor color-fish% color))
(test 'red color-fish-color red-fish)
(test 'blue color-fish-color blue-fish)
(test 1 'fr (send red-fish get-size))
(test 10 'fb (send blue-fish get-size))
(send red-fish grow 30)
(test 31 'fr (send red-fish get-size))
(test (void) 'fv (send blue-fish die))
(test 'black color-fish-color blue-fish)
(let ([exn (with-handlers ([exn:fail? (lambda (exn) exn)])
(send red-fish get-size 10))])
(test #t exn:fail:contract:arity? exn)
;; (test 1 exn:application-value exn)
;; (test 0 exn:application:arity-expected exn)
)
(define picky-fish%
(class fish%
(override grow)
(public set-limit)
(rename-super [super-grow grow])
(define pickiness 1)
(define upper-limit 50)
(define grow
;; Test method-declaration shape with variable:
(let ([grow (lambda (s)
(super-grow (min upper-limit (- s pickiness))))])
grow))
(define set-limit
;; Test method-declaration shape with body method:
(let* ([check-pickiness (lambda (p)
(unless (= p pickiness)
(error 'ack)))]
[set-upper (lambda (v p)
(check-pickiness p)
(set! upper-limit v))])
(lambda (v)
(set-upper v pickiness))))
(super-instantiate () (size 12))))
(define picky (make-object picky-fish%))
(test 12 'pf (send picky get-size))
(test 42 'pfe (send picky eat red-fish))
(test 42 'pf (send picky get-size))
(test (void) 'pfp (send picky set-limit 20))
(test 62 'pfe (send picky eat red-fish))
(test #t is-a? picky object%)
(test #t is-a? picky fish%)
(test #t is-a? picky picky-fish%)
(test #f is-a? picky color-fish%)
(test #t is-a? red-fish object%)
(test #t is-a? red-fish fish%)
(test #f is-a? red-fish picky-fish%)
(test #t is-a? red-fish color-fish%)
(test #t is-a? fish1 eater<%>)
(test #t is-a? picky eater<%>)
(test #t is-a? red-fish eater<%>)
(test #f is-a? 5 picky-fish%)
(test #f is-a? 5 eater<%>)
(test #t is-a? picky (class->interface picky-fish%))
(test #f is-a? red-fish (class->interface picky-fish%))
(err/rt-test (instantiate fish% () (bad-size 10)) exn:fail:object?)
(err/rt-test (instantiate fish% () (size 10) (size 12)) exn:fail:object?)
(err/rt-test (instantiate fish% (10) (size 12)) exn:fail:object?)
(err/rt-test (instantiate picky-fish% () (size 17)) exn:fail:object?)
(err/rt-test (color-fish-color picky))
(err/rt-test (color-fish-color 6))
;; ----------------------------------------
;; Final and inner
;; Can't actually override `final', but it might call `inner'...
;; color-fish%'s die doesn't call inner:
(test (void)
'no-overment
(send (new (class color-fish% (augment die) (define die (lambda () 'x)) (super-new))) die))
;; Can't override (only augment):
(err/rt-test (class color-fish% (override die) (define die (lambda () 'x))) exn:fail:object?)
(err/rt-test (class color-fish% (overment die) (define die (lambda () 'x))) exn:fail:object?)
;; color-fish%'s die2 is final:
(err/rt-test (class color-fish% (override die2) (define die2 (lambda () 'x))) exn:fail:object?)
(err/rt-test (class color-fish% (augment die2) (define die2 (lambda () 'x))) exn:fail:object?)
(err/rt-test (class color-fish% (overment die2) (define die2 (lambda () 'x))) exn:fail:object?)
(err/rt-test (class color-fish% (augride die2) (define die2 (lambda () 'x))) exn:fail:object?)
;; Can't augment (only override):
(err/rt-test (class color-fish% (augment eat) (define eat (lambda (f) 'x))) exn:fail:object?)
(err/rt-test (class color-fish% (augride eat) (define eat (lambda (f) 'x))) exn:fail:object?)
;; Can't use inner without a `final' here or in superclass
(syntax-test #'(class object% (define/public (f x) x) (rename-inner [inner-f f])))
(syntax-test #'(class object% (define/public (f x) (inner (void) f x))))
(err/rt-test (class object% (rename-inner [inner-f f])) exn:fail:object?)
(err/rt-test (class (class object% (define/public (f x) x)) (rename-inner [inner-f f])) exn:fail:object?)
;; Can't use `rename-super' for a final method:
(err/rt-test (class (class object% (define/pubment (f x) x))
(rename-super [super-f f])) exn:fail:object?)
(define bfoo-jgoo%
(class object%
(define/pubment (foo x)
(inner (list 1 x) foo (list 2 x)))
(define/public (goo x)
(list 3 x))
(define/public (zoo x)
(inner (list 10 x) foo (list 20 x)))
(super-new)))
(define bjfoo-jbgoo%
(class bfoo-jgoo%
(define/augride (foo x) (list 4 x))
(define/overment (goo x)
(let ([y (super goo x)])
(inner (list 5 y) goo (list 6 y))))
(rename-super [super-zoo zoo])
(define/public (hoo y) (super-zoo (list 7 y)))
(super-new)))
(define bjjfoo-jbjgoo%
(class bjfoo-jbgoo%
(define/override (foo x)
(list 8 x))
(define/augride (goo x)
(list 9 x))
(super-new)))
(define bjjbfoo-jbjjgoo%
(class bjjfoo-jbjgoo%
(define/overment (foo x)
(let ([z (super foo (list 10 x))])
(inner (list 11 z) foo (list 12 z))))
(define/override (goo x)
(super goo (list 13 x)))
(super-new)))
(define bjjbjfoo-jbjjbgoo%
(class bjjbfoo-jbjjgoo%
(define/augride (foo x)
(list 14 x))
(define/overment (goo x)
(super goo (list 15 x)))
(super-new)))
(test '(1 12) 'bjt (send (new bfoo-jgoo%) foo 12))
(test '(3 13) 'bjt (send (new bfoo-jgoo%) goo 13))
(test '(10 13.5) 'bjt (send (new bfoo-jgoo%) zoo 13.5))
(test '(4 (2 14)) 'bjt (send (new bjfoo-jbgoo%) foo 14))
(test '(5 (3 15)) 'bjt (send (new bjfoo-jbgoo%) goo 15))
(test '(4 (20 (7 16))) 'bjt (send (new bjfoo-jbgoo%) hoo 16))
(test '(8 (2 17)) 'bjt (send (new bjjfoo-jbjgoo%) foo 17))
(test '(9 (6 (3 18))) 'bjt (send (new bjjfoo-jbjgoo%) goo 18))
(test '(8 (20 (7 19))) 'bjt (send (new bjjfoo-jbjgoo%) hoo 19))
(test '(11 (8 (10 (2 20)))) 'bjt (send (new bjjbfoo-jbjjgoo%) foo 20))
(test '(9 (13 (6 (3 21)))) 'bjt (send (new bjjbfoo-jbjjgoo%) goo 21))
(test '(11 (8 (10 (20 (7 22))))) 'bjt (send (new bjjbfoo-jbjjgoo%) hoo 22))
(test '(14 (12 (8 (10 (2 23))))) 'bjt (send (new bjjbjfoo-jbjjbgoo%) foo 23))
(test '(9 (13 (15 (6 (3 24))))) 'bjt (send (new bjjbjfoo-jbjjbgoo%) goo 24))
(test '(14 (12 (8 (10 (20 (7 25)))))) 'bjt (send (new bjjbjfoo-jbjjbgoo%) hoo 25))
;; ----------------------------------------
;; Make sure inner default isn't called when augment is available:
(let ([x 0])
(define c% (class object%
(define/pubment (m v)
(inner (set! x (+ x v)) m v))
(super-new)))
(define d% (class c%
(define/augment (m v)
(list v))
(super-new)))
(test (void) 'no-inner (send (new c%) m 5))
(test 5 values x)
(test '(6) 'inner (send (new d%) m 6))
(test 5 values x))
;; ----------------------------------------
(define rest-arg-fish%
(class fish%
(public greeting)
(begin ; should get flattened
(init -first-name)
(init-field last-name)
(init-rest -nicknames))
(define first-name -first-name)
(define nicknames -nicknames)
(define greeting
(letrec ([loop
(case-lambda
[() (loop first-name last-name)]
[(last-name first-name) ;; intentionally backwards to test scope
(format "~a ~a, a.k.a.: ~a"
last-name first-name
nicknames)]
[(a b c d . rest) 'never-get-here])])
loop))
(define/public useless-method (case-lambda))
(super-new (size 12))))
(define rest-fish (make-object rest-arg-fish% "Gil" "Finn" "Slick"))
(test "Gil Finn, a.k.a.: (Slick)" 'osf (send rest-fish greeting))
(let ([exn (with-handlers ([exn:fail? (lambda (exn) exn)])
(send rest-fish greeting 1 2 3))])
(test #t exn:fail:contract:arity? exn)
;; (test 3 exn:application-value exn)
;; (test (list 0 2 (make-arity-at-least 4)) exn:application:arity-expected exn)
)
(let ([exn (with-handlers ([exn:fail? (lambda (exn) exn)])
(send rest-fish useless-method 3))])
(test #t exn:fail:contract:arity? exn)
;; (test 1 exn:application-value exn)
;; (test null exn:application:arity-expected exn)
)
;; Missing last-name:
(err/rt-test (instantiate rest-arg-fish% () (-first-name "Gil") (-nicknames null))
exn:fail:object?)
(define rest-fish-0 (instantiate rest-arg-fish% () (-first-name "Gil") (last-name "Finn")))
(test "Gil Finn, a.k.a.: ()" 'osf (send rest-fish-0 greeting))
;; Keyword order doesn't matter:
(define rest-fish-0.5 (instantiate rest-arg-fish% () (last-name "Finn") (-first-name "Gil")))
(test "Gil Finn, a.k.a.: ()" 'osf (send rest-fish-0.5 greeting))
(err/rt-test (instantiate rest-arg-fish% ()
(-first-name "Gil") (last-name "Finn")
(-nicknames "Slick"))
exn:fail:object?)
(err/rt-test (instantiate rest-arg-fish% ()
(-first-name "Gil") (last-name "Finn")
(anything "Slick"))
exn:fail:object?)
;; Redundant by-pos:
(err/rt-test (instantiate rest-arg-fish% ("Gil") (-first-name "Gilly") (last-name "Finn"))
exn:fail:object?)
(define no-rest-fish%
(class fish%
(public greeting)
(init-field first-name)
(init-field last-name)
(init-rest)
(define (greeting)
(format "~a ~a" last-name first-name))
(super-instantiate (12))))
;; Too many by-pos:
(err/rt-test (instantiate no-rest-fish% ("Gil" "Finn" "hi" "there"))
exn:fail:object?)
(define no-rest-0 (instantiate no-rest-fish% ("Gil" "Finn")))
(test 12 'norest (send no-rest-0 get-size))
(define allow-rest-fish%
(class fish%
(public greeting)
(init-field first-name)
(init-field last-name)
(define (greeting)
(format "~a ~a" last-name first-name))
(super-instantiate ())))
;; Too many by-pos:
(err/rt-test (instantiate no-rest-fish% ("Gil" "Finn" 18 20))
exn:fail:object?)
(define no-rest-0 (instantiate allow-rest-fish% ("Gil" "Finn" 18)))
(test 18 'allowrest (send no-rest-0 get-size))
(define allow-rest/size-already-fish%
(class fish%
(public greeting)
(init-field first-name)
(init-field last-name)
(define (greeting)
(format "~a ~a" last-name first-name))
(super-instantiate (12))))
;; Unused by-pos:
(err/rt-test (instantiate allow-rest/size-already-fish% ("Gil" "Finn" 18))
exn:fail:object?)
;; Subclass where superclass has rest arg, check by-pos:
(define with-rest%
(class object%
(init-rest args)
(field [a args])
(public get-args)
(define (get-args) a)
(super-instantiate ())))
(define to-rest%
(class with-rest%
(super-instantiate ())))
(test '("hi" "there") 'to-rest (send (instantiate to-rest% ("hi" "there")) get-args))
(err/rt-test (instantiate to-rest% () (by-name "hi"))
exn:fail:object?)
;; Check by-pos with super-instantiate:
(define to-rest2%
(class with-rest%
(super-instantiate ("hey,"))))
(test '("hey," "hi" "there") 'to-rest (send (instantiate to-rest2% ("hi" "there")) get-args))
(err/rt-test (instantiate to-rest2% () (by-name "hi"))
exn:fail:object?)
;; Even more nested:
(define to-rest3%
(class to-rest2%
(super-instantiate ("um..."))))
(test '("hey," "um..." "hi" "there") 'to-rest (send (instantiate to-rest3% ("hi" "there")) get-args))
;; ------------------------------------------------------------
;; ...-final clauses.
;; Internal calls to public-final and pubment are direct,
;; but other calls must be indirect.
(let ()
(define c% (class object%
(define/pubment (foo x)
1)
(define/public-final (fool x)
10)
(define/public (aoo x) (foo x))
(define/public (aool x) (fool x))
(define/public (foo2 x) 2)
(super-new)))
(define d% (class c%
(define/augment (foo y)
2)
(define/public (goo z)
(foo z))
(define/override-final (foo2 x)
20)
(define/public (goo2 z)
(foo2 z))
(super-new)))
(define e% (class c%
(define/augment-final (foo y)
2)
(define/public (goo z)
(foo z))
(super-new)))
(test 1 'foo (send (new c%) foo 0))
(test 1 'foo (send (new d%) foo 0))
(test 1 'foo (send (new d%) goo 0))
(test 1 'foo (send (new e%) goo 0))
(test 2 'foo (send (new c%) foo2 0))
(test 20 'foo (send (new d%) foo2 0))
(test 20 'foo (send (new d%) goo2 0))
(test 1 'aoo (send (new c%) aoo 0))
(test 10 'aool (send (new d%) aool 0))
(test 10 'aool (send (new d%) aool 0))
(err/rt-test (class c% (define/override (fool x) 12)) exn:fail:object?)
(err/rt-test (class c% (define/augment (fool x) 12)) exn:fail:object?)
(err/rt-test (class d% (define/override (foo2 x) 12)) exn:fail:object?)
(err/rt-test (class d% (define/augment (foo2 x) 12)) exn:fail:object?)
(err/rt-test (class e% (define/override (foo x) 12)) exn:fail:object?)
(err/rt-test (class e% (define/augment (foo x) 12)) exn:fail:object?)
)
;; ------------------------------------------------------------
;; Test abstract clauses
;; examples taken from the DPC book
(define bt%
(class object%
(super-new)
(init-field number)
(abstract count sum)
(define/public (double n)
(new node% [number n] [left this] [right this]))))
(define leaf%
(class bt%
(super-new)
(inherit-field number)
(define/override (sum) number)
(define/override (count) 1)))
(define node%
(class bt%
(super-new)
(init-field left right)
(inherit-field number)
(define/override (sum) (+ number
(send left sum)
(send right sum)))
(define/override (count) (+ 1
(send left count)
(send right count)))))
(err/rt-test (new bt% [number 5]) exn:fail:object?)
(test 22 'bt (send (send (new leaf% [number 7]) double 8) sum))
(test 3 'bt (send (send (new leaf% [number 7]) double 8) count))
;; calling abstracts from concrete methods
(let* ([foo% (class (class object%
(super-new)
(abstract foo)
(define/public (bar)
(add1 (foo)))
(define/public (baz) 15))
(super-new)
(define/override (foo) 10))]
[o (new foo%)])
(test 10 'abstract (send o foo))
(test 11 'abstract (send o bar))
(test 15 'abstract (send o baz)))
;; super calls to an abstract should just be (void)
(let ([foo% (class (class object%
(super-new)
(abstract m))
(super-new)
(define/override (m) (super m)))])
(test (void) 'super (send (new foo%) m)))
;; failing to implement abstract methods
(define bad-leaf% (class bt% (inherit-field number)))
(define bad-leaf2% (class bt% (inherit-field number)
(define/override (sum) number)))
(err/rt-test (new bad-leaf% [number 5]) exn:fail:object?)
(err/rt-test (new bad-leaf2% [number 10]) exn:fail:object?)
;; cannot define publics over abstracts
(err/rt-test (class bt% (inherit-field number)
(define/public (sum) number))
exn:fail:object?)
(err/rt-test (class bt% (inherit-field number)
(define/pubment (sum) number))
exn:fail:object?)
;; ------------------------------------------------------------
;; Test send/apply dotted send and method-call forms:
(define dotted% (class object%
(public f g h)
(define (f x y z)
(list z y x))
(define (g x)
(let ([w (list x (add1 x) (+ x 2))])
(f . w)))
(define (h x #:y [y 12])
(list x y))
(super-make-object)))
(define dotted (make-object dotted%))
(test '(3 2 1) 'dotted (send dotted f 1 2 3))
(test '(9 8 7) 'dotted (send dotted g 7))
(let ([l (list 3 5 6)])
(test '(6 5 3) 'dotted (send dotted f . l))
(test '(6 5 3) 'dotted (send/apply dotted f l))
(test '(9 8 7) 'dotted (send/apply dotted f '(7 8 9))))
(let ([l (list 6 8)])
(test '(8 6 2) 'dotted (send dotted f 2 . l))
(test '(8 6 2) 'dotted (send/apply dotted f 2 l))
(test '(9 7 3) 'dotted (send/apply dotted f 3 '(7 9))))
(test '(1 12) 'dotted (send/apply dotted h (list 1)))
(test '(2 12) 'dotted (send/keyword-apply dotted h null null (list 2)))
(test '(3 8) 'dotted (send/keyword-apply dotted h '(#:y) (list 8) (list 3)))
(test '(c b a) dynamic-send dotted 'f 'a 'b 'c)
(test '(c b a) apply dynamic-send dotted 'f 'a '(b c))
(test '(e 12) apply dynamic-send dotted 'h '(e))
(test '(f 13) 'dotted (apply dynamic-send dotted 'h '(f) #:y 13))
(test '(g 14) keyword-apply dynamic-send '(#:y) '(14) dotted 'h '(g))
(syntax-test #'(send/apply dotted f 2 . l))
;; ------------------------------------------------------------
;; Test init & feld external names
(define many-fields% (class object%
(init i1
[(i2* i2)])
(init-field i3
[(i4* i4)])
(init [i5 5]
[(i6* i6) 6])
(init-field (i7 7)
[(i8* i8) 8])
(field [a 10]
[(b* b) 12])
(define inits+fields (list i1 i2* i3 i4* i5 i6* i7 i8* a b*))
(define/public (get-fields)
(list i3 i4* i7 i8* a b*))
(define/public (get-inits+fields)
inits+fields)
(super-instantiate ())))
(let ([om1 (make-object many-fields% 10 20 30 40)]
[oi1 (instantiate many-fields% () [i1 11] [i2 21] [i3 31] [i4 41])]
[om2 (make-object many-fields% 12 22 32 42 52 62 72 82)]
[oi2 (instantiate many-fields% () [i1 13] [i2 23] [i3 33] [i4 43] [i5 53] [i6 63] [i7 73] [i8 83])])
(test '(10 20 30 40 5 6 7 8 10 12) 'om1-if (send om1 get-inits+fields))
(test '(11 21 31 41 5 6 7 8 10 12) 'oi1-if (send oi1 get-inits+fields))
(test '(30 40 7 8 10 12) 'om1-f (send om1 get-fields))
(test '(31 41 7 8 10 12) 'oi1-f (send oi1 get-fields))
(test '(12 22 32 42 52 62 72 82 10 12) 'om2-if (send om2 get-inits+fields))
(test '(13 23 33 43 53 63 73 83 10 12) 'oi2-if (send oi2 get-inits+fields))
(test '(32 42 72 82 10 12) 'om2-f (send om2 get-fields))
(test '(33 43 73 83 10 12) 'oi2-f (send oi2 get-fields))
(test 10 (class-field-accessor many-fields% a) om1)
(test 12 (class-field-accessor many-fields% b) om1))
;; ------------------------------------------------------------
;; Test this%
(let ()
(define base%
(class object%
(super-new)
(define/public (factory)
(new this%))))
(define derived%
(class base%
(super-new)
(init-field [f 4])
(define/public (double)
(set! f (* 2 f)))))
(let* ([factory-derived (send (new derived%) factory)])
(test 4 'factory-derived-f (get-field f factory-derived))
(send factory-derived double)
(test 8 'factory-derived-f-doubled (get-field f factory-derived))))
(let ()
(define account%
(class object%
(super-new)
(init-field balance)
(define/public (add n)
(new this% [balance (+ n balance)]))))
(define savings%
(class account%
(super-new)
(inherit-field balance)
(define interest 0.04)
(define/public (add-interest)
(send this add (* interest balance)))))
(let* ([acct (new savings% [balance 500])]
[acct (send acct add 500)]
[acct (send acct add-interest)])
(test 1040.0 'acct-balance (get-field balance acct))))
;; ------------------------------------------------------------
;; Test public*, define-public, etc.
(syntax-test #'(class object% public*))
(syntax-test #'(class object% (public* . x)))
(syntax-test #'(class object% (public* x)))
(syntax-test #'(class object% (public* [x])))
(syntax-test #'(class object% (public* [x . y])))
(syntax-test #'(class object% (public* [x 7 8])))
(syntax-test #'(class object% (public* [7 8])))
(syntax-test #'(class object% override*))
(syntax-test #'(class object% (override* . x)))
(syntax-test #'(class object% (override* x)))
(syntax-test #'(class object% (override* [x])))
(syntax-test #'(class object% (override* [x . y])))
(syntax-test #'(class object% (override* [x 7 8])))
(syntax-test #'(class object% (override* [7 8])))
(syntax-test #'(class object% private*))
(syntax-test #'(class object% (private* . x)))
(syntax-test #'(class object% (private* x)))
(syntax-test #'(class object% (private* [x])))
(syntax-test #'(class object% (private* [x . y])))
(syntax-test #'(class object% (private* [x 7 8])))
(syntax-test #'(class object% (private* [7 8])))
(syntax-test #'(class object% define/public))
(syntax-test #'(class object% (define/public)))
(syntax-test #'(class object% (define/public x)))
(syntax-test #'(class object% (define/public x 1 2)))
(syntax-test #'(class object% (define/public 1 2)))
(syntax-test #'(class object% (define/public (x 1) 2)))
(syntax-test #'(class object% (define/public (1 x) 2)))
(syntax-test #'(class object% (define/public (x . 1) 2)))
(syntax-test #'(class object% (define/public ((x 1) . a) 2)))
(syntax-test #'(class object% (define/public ((x b b) a) 2)))
(syntax-test #'(class object% define/override))