53 lines
1.7 KiB
Racket
53 lines
1.7 KiB
Racket
#lang racket/base
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(require tests/eli-tester lazy/force)
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(define (test-lazy/force)
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(test (! 1) => 1
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(! (! 1)) => 1
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(! (~ 1)) => 1
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(! (~ (~ (~ 1)))) => 1))
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(define (test-!list)
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(test (!list (list 1 2 3)) => '(1 2 3)
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(!list (~ (list 1 2 3))) => '(1 2 3)
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(!list (~ (cons 1 (~ (cons 2 (~ (cons 3 (~ null)))))))) => '(1 2 3)
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(!list 1) => 1 ; works on dotted lists
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(!list (cons 1 2)) => '(1 . 2)))
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(define (test-!!list)
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(test (!!list (list 1 2 3)) => '(1 2 3)
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(!!list (list (~ 1) (~ 2) (~ 3))) => '(1 2 3)
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(!!list (list* (~ 1) (~ 2) (~ 3))) => '(1 2 . 3)
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(!!list (~ (cons (~ 1) (~ (cons (~ 2) (~ (cons (~ 3) (~ null))))))))
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=> '(1 2 3)
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(!!list (~ (cons (~ 1) (~ (list 2 3))))) => '(1 2 3)
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(!!list (~ (cons (~ 1) (~ (list 2 (~ 3)))))) => '(1 2 3)))
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(define (test-!!)
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(parameterize ([print-graph #t])
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(test
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(!! (~ (cons (~ 1) (~ (cons (~ 2) (~ (cons (~ 3) (~ null))))))))
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=> '(1 2 3)
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(format "~s" (!! (letrec ([ones (~ (cons 1 (~ ones)))]) ones)))
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=> "#0=(1 . #0#)"
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(format "~s" (!! (letrec ([ones (~ (cons 1 (~ ones)))]) (list ones ones))))
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=> "(#0=(1 . #0#) #0#)"
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(format "~s" (!! (letrec ([x (vector 1 (~ x))]) x)))
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=> "#0=#(1 #0#)"
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(format "~s" (!! (letrec ([x (vector-immutable 1 (~ x))]) x)))
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=> "#0=#(1 #0#)"
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(format "~s" (!! (letrec ([x (box (~ x))]) x)))
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=> "#0=#�#"
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(format "~s" (!! (letrec ([x (box-immutable (~ x))]) x)))
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=> "#0=#�#"
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(format "~s" (!! (letrec ([x (make-prefab-struct 'foo 1 (~ x))]) x)))
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=> "#0=#s(foo 1 #0#)")))
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(provide forcer-tests)
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(define (forcer-tests)
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(test do (test-lazy/force)
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do (test-!list)
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do (test-!!list)
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do (test-!!)))
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