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(partition): New tests, by Matthias Koeppe.

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This commit is contained in:
Kevin Ryde 2004-12-05 22:15:54 +00:00
parent 49d2f1f850
commit cabc854555
1 changed files with 43 additions and 0 deletions
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43
test-suite/tests/srfi-1.test
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@ -415,3 +415,46 @@
(pass-if "(1 2) / (3 4) / (5 6)" (pass-if "(1 2) / (3 4) / (5 6)"
(equal? '(9 12) (map + '(1 2) '(3 4) '(5 6)))))) (equal? '(9 12) (map + '(1 2) '(3 4) '(5 6))))))
;;
;; partition
;;
(define (test-partition pred list kept-good dropped-good)
(call-with-values (lambda ()
(partition pred list))
(lambda (kept dropped)
(and (equal? kept kept-good)
(equal? dropped dropped-good)))))
(with-test-prefix "partition"
(pass-if "with dropped tail"
(test-partition even? '(1 2 3 4 5 6 7)
'(2 4 6) '(1 3 5 7)))
(pass-if "with kept tail"
(test-partition even? '(1 2 3 4 5 6)
'(2 4 6) '(1 3 5)))
(pass-if "with everything dropped"
(test-partition even? '(1 3 5 7)
'() '(1 3 5 7)))
(pass-if "with everything kept"
(test-partition even? '(2 4 6)
'(2 4 6) '()))
(pass-if "with empty list"
(test-partition even? '()
'() '()))
(pass-if "with reasonably long list"
;; the old implementation from SRFI-1 reference implementation
;; would signal a stack-overflow for a list of only 500 elements!
(call-with-values (lambda ()
(partition even?
(make-list 10000 1)))
(lambda (even odd)
(and (= (length odd) 10000)
(= (length even) 0))))))