(define-library (srfi 158 test)
(import (scheme base)
(scheme read)
(srfi 1)
(srfi 158)
(chibi test))
(export run-tests)
(begin
(define (with-input-from-string str thunk)
(parameterize ((current-input-port (open-input-string str)))
(thunk)))
(define g
(make-coroutine-generator
(lambda (yield) (let loop ((i 0))
(when (< i 3) (yield i) (loop (+ i 1)))))))
(define (for-each-digit proc n)
(when (> n 0)
(let-values (((div rem) (truncate/ n 10)))
(proc rem)
(for-each-digit proc div))))
(define g1 (generator 1 2 3))
(define g2 (generator 4 5 6 7))
(define (proc . args) (values (apply + args) (apply + args)))
(define (small? x) (< x 3))
(define n 0)
(define (run-tests)
(test-group "srfi-158: generators"
(test-group "generators/constructors"
(test '() (generator->list (generator)))
(test '(1 2 3) (generator->list (generator 1 2 3)))
(test '(1 2 3 1 2) (generator->list (circular-generator 1 2 3) 5))
(test '(8 9 10) (generator->list (make-iota-generator 3 8)))
(test '(8 10 12) (generator->list (make-iota-generator 3 8 2)))
(test '(3 4 5 6) (generator->list (make-range-generator 3) 4))
(test '(3 4 5 6 7) (generator->list (make-range-generator 3 8)))
(test '(3 5 7) (generator->list (make-range-generator 3 8 2)))
(test '(0 1 2) (generator->list g))
(test '(1 2 3 4 5) (generator->list (list->generator '(1 2 3 4 5))))
(test '(1 2 3 4 5) (generator->list (vector->generator '#(1 2 3 4 5))))
(test '#(0 0 1 2 4)
(let ((v (make-vector 5 0)))
(generator->vector! v 2 (generator 1 2 4))
v))
(test '(5 4 3 2 1) (generator->list (reverse-vector->generator '#(1 2 3 4 5))))
(test '(#\a #\b #\c #\d #\e) (generator->list (string->generator "abcde")))
(test '(10 20 30) (generator->list (bytevector->generator (bytevector 10 20 30))))
(test '(5 4 3 2 1) (generator->list
(make-for-each-generator for-each-digit
12345)))
(test '(0 2 4 6 8 10) (generator->list
(make-unfold-generator
(lambda (s) (> s 5))
(lambda (s) (* s 2))
(lambda (s) (+ s 1))
0)))
) ; end "generators/constructors"
(test-group "generators/operators"
(test '(a b 0 1) (generator->list (gcons* 'a 'b (make-range-generator 0 2))))
(test '(0 1 2 0 1) (generator->list (gappend (make-range-generator 0 3)
(make-range-generator 0 2))))
(test '() (generator->list (gappend)))
(test '(15 22 31) (generator->list (gcombine proc 10 g1 g2)))
(test '(1 3 5 7 9) (generator->list (gfilter
odd?
(make-range-generator 1 11))))
(test '(2 4 6 8 10) (generator->list (gremove
odd?
(make-range-generator 1 11))))
(set! g (make-range-generator 1 5))
(test '(1 2 3) (generator->list (gtake g 3)))
(test '(4) (generator->list g))
(test '(1 2) (generator->list (gtake (make-range-generator 1 3) 3)))
(test '(1 2 0) (generator->list (gtake (make-range-generator 1 3) 3 0)))
(test '(3 4) (generator->list (gdrop (make-range-generator 1 5) 2)))
(set! g (make-range-generator 1 5))
(test '(1 2) (generator->list (gtake-while small? g)))
(set! g (make-range-generator 1 5))
(test '(3 4) (generator->list (gdrop-while small? g)))
(test '() (generator->list (gdrop-while (lambda args #t) (generator 1 2 3))))
(test '(0.0 1.0 0 2) (generator->list (gdelete 1
(generator 0.0 1.0 0 1 2))))
(test '(0.0 0 2) (generator->list (gdelete 1
(generator 0.0 1.0 0 1 2)
=)))
(test '(a c e) (generator->list (gindex (list->generator '(a b c d e f))
(list->generator '(0 2 4)))))
(test '(a d e) (generator->list (gselect (list->generator '(a b c d e f))
(list->generator '(#t #f #f #t #t #f)))))
(test '(1 2 3) (generator->list (gdelete-neighbor-dups
(generator 1 1 2 3 3 3)
=)))
(test '(1) (generator->list (gdelete-neighbor-dups
(generator 1 2 3)
(lambda args #t))))
(test '(1 2 3 a b c)
(generator->list
(gflatten (generator '(1 2 3) '(a b c)))))
(test '((1 2 3) (4 5 6) (7 8))
(generator->list (ggroup (generator 1 2 3 4 5 6 7 8) 3)))
(test '((1 2 3) (4 5 6) (7 8 0))
(generator->list (ggroup (generator 1 2 3 4 5 6 7 8) 3 0)))
(test '(1 2 3)
(generator->list (gmerge < (generator 1 2 3))))
(test '(1 2 3 4 5 6)
(generator->list (gmerge < (generator 1 2 3) (generator 4 5 6))))
(test '(1 2 3 4 4 5 6)
(generator->list (gmerge <
(generator 1 2 4 6)
(generator)
(generator 3 4 5))))
(test '(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
(generator->list (gmerge <
(generator 1 10 11)
(generator 2 9 12)
(generator 3 8 13)
(generator 4 7 14)
(generator 5 6 15))))
;; check the tie-break rule
(test '((1 a) (1 e) (1 b) (1 c) (1 d))
(generator->list (gmerge (lambda (x y) (< (car x) (car y)))
(generator '(1 a) '(1 e))
(generator '(1 b))
(generator '(1 c) '(1 d)))))
(test '(-1 -2 -3 -4 -5)
(generator->list (gmap - (generator 1 2 3 4 5))))
(test '(7 9 11 13)
(generator->list (gmap +
(generator 1 2 3 4 5)
(generator 6 7 8 9))))
(test '(54 140 264)
(generator->list (gmap *
(generator 1 2 3 4 5)
(generator 6 7 8)
(generator 9 10 11 12 13))))
(test '(a c e g i)
(generator->list
(gstate-filter
(lambda (item state) (values (even? state) (+ 1 state)))
0
(generator 'a 'b 'c 'd 'e 'f 'g 'h 'i 'j))))
) ; end "generators/operators"
(test-group "generators/consumers"
;; no test for plain generator->list (used throughout)
(test '(1 2 3) (generator->list (generator 1 2 3 4 5) 3))
(test '(5 4 3 2 1) (generator->reverse-list (generator 1 2 3 4 5)))
(test '#(1 2 3 4 5) (generator->vector (generator 1 2 3 4 5)))
(test '#(1 2 3) (generator->vector (generator 1 2 3 4 5) 3))
(test "abc" (generator->string (generator #\a #\b #\c)))
(test '(e d c b a . z) (with-input-from-string "a b c d e"
(lambda () (generator-fold cons 'z read))))
(generator-for-each (lambda values (set! n (apply + values)))
(generator 1) (generator 2) (generator 3))
(test 6 n)
(test '(6 15)
(generator-map->list (lambda values (apply + values))
(generator 1 4) (generator 2 5) (generator 3 6)))
(test 3 (generator-find (lambda (x) (> x 2)) (make-range-generator 1 5)))
(test 2 (generator-count odd? (make-range-generator 1 5)))
(set! g (make-range-generator 2 5))
(test #t (generator-any odd? g))
(test '(4) (generator->list g))
(set! g (make-range-generator 2 5))
(test #f (generator-every odd? g))
(test '(3 4) (generator->list g))
(test '(#\a #\b #\c) (generator-unfold (make-for-each-generator string-for-each "abc") unfold))
) ; end "generators/consumers"
) ; end "generators"
(test-group "srfi-158: accumulators"
(test -8
(let ((a (make-accumulator * 1 -)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test 3
(let ((a (count-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test '(1 2 4)
(let ((a (list-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test '(4 2 1)
(let ((a (reverse-list-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test '#(1 2 4)
(let ((a (vector-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test '#(0 0 1 2 4)
(let* ((v (vector 0 0 0 0 0))
(a (vector-accumulator! v 2)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test '#u8(0 0 1 2 4)
(let* ((v (bytevector 0 0 0 0 0))
(a (bytevector-accumulator! v 2)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test '#(4 2 1)
(let ((a (reverse-vector-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test "abc"
(let ((a (string-accumulator)))
(a #\a)
(a #\b)
(a #\c)
(a (eof-object))))
(test #u8(1 2 4)
(let ((a (bytevector-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test 7
(let ((a (sum-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
(test 8
(let ((a (product-accumulator)))
(a 1)
(a 2)
(a 4)
(a (eof-object))))
) ; end "accumulators"
)))