95 lines
3.9 KiB
Racket
95 lines
3.9 KiB
Racket
#lang racket
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(require rackunit rackunit/text-ui unstable/class "helpers.rkt")
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(run-tests
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(test-suite "class.ss"
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(test-suite "Predicates and Contracts"
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(test-suite "class-or-interface/c"
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(test (check-ok (with/c class-or-interface/c object%)))
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(test (check-ok (with/c class-or-interface/c (interface ()))))
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(test (check-bad (with/c class-or-interface/c (new object%)))))
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(test-suite "object-provides/c"
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(test-ok (with/c (object-provides/c) (new object%)))
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(test-ok (define c% (class object% (super-new)))
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(with/c (object-provides/c c%) (new c%)))
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(test-ok (define i<%> (interface ()))
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(define c% (class* object% (i<%>) (super-new)))
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(with/c (object-provides/c i<%>) (new c%)))
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(test-bad (define c% (class object% (super-new)))
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(with/c (object-provides/c c%) (new object%)))
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(test-bad (define i<%> (interface ()))
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(with/c (object-provides/c i<%>) (new object%)))
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(test-bad (with/c (object-provides/c) object%)))
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(test-suite "class-provides/c"
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(test-ok (with/c (class-provides/c) object%))
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(test-ok (define c% (class object% (super-new)))
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(with/c (class-provides/c c%) c%))
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(test-ok (define c% (class object% (super-new)))
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(with/c (class-provides/c object%) c%))
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(test-ok (define i<%> (interface ()))
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(define c% (class* object% (i<%>) (super-new)))
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(with/c (class-provides/c i<%>) c%))
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(test-bad (define c% (class object% (super-new)))
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(with/c (class-provides/c c%) object%))
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(test-bad (define i<%> (interface ()))
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(with/c (class-provides/c i<%>) object%)))
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(test-suite "mixin-provides/c"
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(test-ok ((with/c (mixin-provides/c [] []) values) object%))
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(test-bad (define i<%> (interface ()))
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((with/c (mixin-provides/c [i<%>] []) values) object%))
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(test-bad (define i<%> (interface ()))
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((with/c (mixin-provides/c [i<%>] []) values) object%))))
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(test-suite "Mixins"
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(test-suite "ensure-interface"
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(test-case "implementation unchanged"
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(let* ([i<%> (interface ())]
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[c% (class* object% (i<%>) (super-new))]
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[mx (lambda (parent%) (class* parent% (i<%>) (super-new)))])
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(check-eq? (ensure-interface i<%> mx c%) c%)))
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(test-case "non-implementation subclassed"
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(let* ([i<%> (interface ())]
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[c% (class object% (super-new))]
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[mx (lambda (parent%) (class* parent% (i<%>) (super-new)))]
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[result (ensure-interface i<%> mx c%)])
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(check-pred class? result)
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(check subclass? result c%)
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(check implementation? result i<%>)))))
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(test-suite "Messages"
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(test-suite "send+"
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(test-case "no messages"
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(let* ([o (new object%)])
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(check-eq? (send+ o) o)))
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(test-case "multiple messages"
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(let* ([c% (class object%
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(super-new)
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(init-field count)
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(define/public (add n) (set! count (+ count n)))
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(define/public (get) count))]
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[o (new c% [count 0])])
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(check-eq? (send+ o [add 1] [add 2]) o)
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(check = (send o get) 3))))
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(test-suite "send-each"
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(test-case "counter"
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(let* ([c% (class object%
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(super-new)
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(init-field count)
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(define/public (add n) (set! count (+ count n)))
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(define/public (get) count))]
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[o1 (new c% [count 1])]
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[o2 (new c% [count 2])]
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[o3 (new c% [count 3])])
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(send-each (list o1 o2 o3) add 3)
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(check-equal? (list (send o1 get) (send o2 get) (send o3 get))
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(list 4 5 6))))))))
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