219 lines
6.5 KiB
Scheme
219 lines
6.5 KiB
Scheme
;;;
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;;; <cons-test.ss> ---- List constructor tests
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;;; Time-stamp: <05/12/16 21:14:31 noel>
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;;;
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;;; Copyright (C) 2002 by Noel Welsh.
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;;;
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;;; This file is part of SRFI-1.
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;;; SRFI-1 is free software; you can redistribute it and/or
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;;; modify it under the terms of the GNU Lesser General Public
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;;; License as published by the Free Software Foundation; either
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;;; version 2.1 of the License, or (at your option) any later version.
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;;; SRFI-1 is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; Lesser General Public License for more details.
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;;; You should have received a copy of the GNU Lesser General Public
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;;; License along with SRFI-1; if not, write to the Free Software
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;;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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;;; Author: Noel Welsh <noelwelsh@yahoo.com>
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;;
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;;
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;; Commentary:
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;; Originally created by:
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;; John David Stone
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;; Department of Mathematics and Computer Science
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;; Grinnell College
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;; stone@math.grin.edu
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(module cons-test
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mzscheme
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(require (planet "test.ss" ("schematics" "schemeunit.plt" 2))
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srfi/1/cons)
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(provide cons-tests)
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(define cons-tests
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(test-suite
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"List constructor tests"
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;; XCONS
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(test-case
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"xcons:null-cdr"
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(check-equal? (xcons '() 'Andromeda) '(Andromeda)))
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(test-case
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"xcons:pair-cdr"
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(let* ((base '(Antlia))
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(result (xcons base 'Apus)))
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(check-equal? result '(Apus Antlia))
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(check-eq? (cdr result) base)))
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(test-case
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"xcons:datum-cdr"
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(check-equal? (xcons 'Aquarius 'Aquila) '(Aquila . Aquarius)))
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;; MAKE-LIST
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(test-case
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"make-list:zero-length"
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(check-true (null? (make-list 0))))
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(test-case
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"make-list:default-element"
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(check-equal? (make-list 5) '(#f #f #f #f #f)))
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(test-case
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"make-list:fill-element"
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(check-equal? (make-list 7 'Circinus)
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'(Circinus Circinus Circinus Circinus
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Circinus Circinus Circinus)))
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;; LIST-TABULATE
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(test-case
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"list-tabulate:zero-length"
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(check-true (null? (list-tabulate 0 (lambda (position) #f)))))
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(test-case
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"list-tabulate:identity"
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(check-equal? (list-tabulate 5 (lambda (position) position))
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'(0 1 2 3 4)))
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(test-case
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"list-tabulate:factorial"
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(check-equal? (list-tabulate 7 (lambda (position)
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(do ((multiplier 1 (+ multiplier 1))
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(product 1 (* product multiplier)))
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((< position multiplier) product))))
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'(1 1 2 6 24 120 720)))
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;; LIST*
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(test-case
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"list*:one-argument"
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(check-eq? (list* 'Columba)
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'Columba))
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(test-case
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"list*:two-arguments"
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(check-equal? (list* 'Corvus 'Crater)
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'(Corvus . Crater)))
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(test-case
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"list*:many-arguments"
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(check-equal? (list* 'Crux 'Cygnus 'Delphinus 'Dorado 'Draco)
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'(Crux Cygnus Delphinus Dorado . Draco)))
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(test-case
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"list*:last-argument-null"
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(check-equal? (list* 'Equuleus 'Fornax '())
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'(Equuleus Fornax)))
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(test-case
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"list*:last-argument-non-empty-list"
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(let* ((base '(Gemini Grus))
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(result (list* 'Hercules 'Horologium 'Hydra 'Hydrus base)))
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(check-equal? result
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'(Hercules Horologium Hydra Hydrus Gemini Grus))
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(check-eq? (cddddr result) base)))
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;; LIST-COPY
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(test-case
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"list-copy:null-list"
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(check-true (null? (list-copy '()))))
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(test-case
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"list-copy:flat-list"
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(let* ((original '(Indus Lacerta Leo Lepus Libra))
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(result (list-copy original)))
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(check-equal? result original)
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(check-true (not (eq? result original)))
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(check-true (not (eq? (cdr result) (cdr original))))
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(check-true (not (eq? (cddr result) (cddr original))))
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(check-true (not (eq? (cdddr result) (cdddr original))))
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(check-true (not (eq? (cddddr result) (cddddr original))))))
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(test-case
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"list-copy:bush"
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(let* ((first '(Lupus))
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(second '(Lynx Malus Mensa (Microscopium Monoceros)
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((Musca Norma Octans))))
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(third 'Ophiuchus)
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(original (list first second third))
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(result (list-copy original)))
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(check-equal? result original)
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(check-true (not (eq? result original)))
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(check-eq? (car result) first)
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(check-true (not (eq? (cdr result) (cdr original))))
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(check-eq? (cadr result) second)
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(check-true (not (eq? (cddr result) (cddr original))))
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(check-eq? (caddr result) third)))
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;; CIRCULAR-LIST
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(test-case
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"circular-list:one-element"
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(let ((result (circular-list 'Orion)))
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(check-true (and (pair? result)
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(eq? (car result) 'Orion)
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(eq? (cdr result) result)))))
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(test-case
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"circular-list:many-elements"
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(let ((result (circular-list 'Pavo 'Pegasus 'Perseus 'Phoenix 'Pictor)))
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(check-true (and (pair? result)
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(eq? (car result) 'Pavo)
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(pair? (cdr result))
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(eq? (cadr result) 'Pegasus)
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(pair? (cddr result))
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(eq? (caddr result) 'Perseus)
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(pair? (cdddr result))
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(eq? (cadddr result) 'Phoenix)
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(pair? (cddddr result))
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(eq? (car (cddddr result)) 'Pictor)
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(eq? (cdr (cddddr result)) result)))))
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;; IOTA
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(test-case
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"iota:zero-count"
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(check-equal? (iota 0) (list)))
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(test-case
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"iota:zero-count-and-step"
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(check-equal? (iota 0 0) (list)))
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(test-case
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"iota:count-only"
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(check-equal? (iota 4) (list 0 1 2 3)))
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(test-case
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"iota:count-and-start"
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(check-equal? (iota 3 1) (list 1 2 3)))
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(test-case
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"iota:count-start-and-step"
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(check-equal? (iota 4 3 2) (list 3 5 7 9)))
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(test-case
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"iota:negative-step"
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(check-equal? (iota 4 0 -1) (list 0 -1 -2 -3)))
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(test-case
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"iota:non-integer-step"
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(check-equal? (iota 5 0 1/2) (list 0 1/2 1 3/2 2)))
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))
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)
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;;; cons-test.ss ends here
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