35 lines
1.1 KiB
Racket
35 lines
1.1 KiB
Racket
#lang typed/racket
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(require typed-struct-props
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typed/rackunit)
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(struct/props foo ([f : Number]) #:transparent
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#:property prop:equal+hash (list (λ (a b rec) #f)
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(λ (a rec) 42)
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(λ (a rec) 43)))
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(struct/props bar ([f : Number]) #:transparent)
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(test-not-exn "The structure's constructor and type work properly"
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(λ () (ann (foo 12) foo)))
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(test-equal? "The structure's constructor and accessor work properly"
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(ann (foo-f (foo 12)) Number)
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12)
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(test-begin
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(test-false "The equal? function supplied to #:equal+hash is used"
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(equal? (foo 0) (foo 0)))
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(test-true "When unspecified, the default implementation of equal? is used"
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(equal? (bar 0) (bar 0))))
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(test-equal? "The equal-hash-code function supplied to #:equal+hash is used"
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(equal-hash-code (foo 34))
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(equal-hash-code (foo 56)))
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(test-equal?
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"The equal-secondary hash-code function supplied to #:equal+hash is used"
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(equal-secondary-hash-code (foo 78))
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(equal-secondary-hash-code (foo 90)))
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