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(import (scheme base)
(only (csc testing) assert assert-equal test)
(csc list))
(test take-simple
(assert-equal '(1 2 3) (take 3 '(1 2 3 4 5))))
(test take-negative
(assert-equal '() (take -5 '(1 2 3))))
(test take-zero
(assert-equal '() (take 0 '(1 2 3))))
(test take-short-list
(assert-equal '(1 2 3) (take 5 '(1 2 3))))
(test take-whole-list
(assert-equal '(1 2 3) (take 3 '(1 2 3))))
(define-syntax values=
(syntax-rules ()
((values= x y)
(let-values (((x-a x-b) x)
((y-a y-b) y))
(and (equal? x-a y-a) (equal? x-b y-b))))))
(test split-at-simple
(assert (values= (values '(1 2) '(3 4)) (split-at 2 '(1 2 3 4)))))
(test split-at-negative
(assert (values= (values '() '(1 2 3)) (split-at -5 '(1 2 3)))))
(test split-at-zero
(assert (values= (values '() '(1 2 3)) (split-at 0 '(1 2 3)))))
(test split-at-short-list
(assert (values= (values '(1 2 3) '()) (split-at 5 '(1 2 3)))))
(test split-at-whole-list
(assert (values= (values '(1 2 3) '()) (split-at 3 '(1 2 3)))))
(test revappend-threes
(assert-equal '(1 2 3 4 5 6) (revappend '(3 2 1) '(4 5 6))))
(test revappend-empty-first-list
(assert-equal '(1 2 3) (revappend '() '(1 2 3))))
(test revappend-empty-second-list
(assert-equal '(1 2 3) (revappend '(3 2 1) '())))
(test intercalate-simple
(assert-equal '("a" "," "b" "," "c") (intercalate "," '("a" "b" "c"))))
(test intercalate-empty
(assert-equal '() (intercalate "," '())))
(test intercalate-singleton
(assert-equal '(1) (intercalate "," '(1))))
(test enumerate-simple
(assert-equal '((0 . a) (1 . b) (2 . c) (3 . d)) (enumerate '(a b c d))))
(test enumerate-nil
(assert-equal '() (enumerate '())))
(test enumerate-singleton
(assert-equal '((0 . "test")) (enumerate '("test"))))
(test filter-even
(assert-equal '(0 2 4 6 8) (filter even? '(0 1 2 3 4 5 6 7 8 9))))
(test filter-odd
(assert-equal '(1 3 5 7 9) (filter odd? '(0 1 2 3 4 5 6 7 8 9))))
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