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;;; Commentary:
;; Tests (srfi srfi-41 util).
;; Currently only tests stream-paginate.
;;; Code:
(define-module (test srfi-41-util)
:use-module (srfi srfi-64)
:use-module (srfi srfi-88)
:use-module ((srfi srfi-41 util) :select (stream-paginate))
:use-module ((srfi srfi-41)
:select (stream->list
stream-ref
stream-from
stream-filter
stream-car
stream))
:use-module ((ice-9 sandbox) :select (call-with-time-limit)))
(test-equal "Finite stream"
'((0 1 2) (3 4 5) (6 7 8) (9))
(let ((strm (stream-paginate (stream 0 1 2 3 4 5 6 7 8 9) 3)))
(map stream->list (stream->list strm))))
(test-equal "slice of infinite"
'(1000 1001 1002 1003 1004 1005 1006 1007 1008 1009)
(let ((strm (stream-paginate (stream-from 0))))
(stream->list (stream-ref strm 100))))
(define unique-symbol (gensym))
(test-equal "time out on infinite 'empty' stream"
unique-symbol
;; defined outside time limit since creation should always
;; succeed. Only reference is expected to fail.
(let ((strm (stream-paginate
;; easy way to get stream which never finds
;; any elements.
(stream-filter negative? (stream-from 0)))))
(call-with-time-limit
0.1
(lambda () (stream-car strm))
(lambda _ unique-symbol))))
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