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589bc528bd
* libguile/sort.c (scm_stable_sort_x): Properly handle zero-length
vectors.
* test-suite/tests/sort.test ("stable-sort"): Add test for this case.
82 lines
2.8 KiB
Scheme
82 lines
2.8 KiB
Scheme
;;;; sort.test --- tests Guile's sort functions -*- scheme -*-
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;;;; Copyright (C) 2003, 2006, 2007, 2009, 2011 Free Software Foundation, Inc.
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;;;;
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;;;; This library 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 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library 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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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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(use-modules (test-suite lib))
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(define (randomize-vector! v n)
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(array-index-map! v (lambda (i) (random n)))
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v)
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(with-test-prefix "sort"
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(pass-if-exception "less function taking less than two arguments"
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exception:wrong-num-args
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(sort '(1 2) (lambda (x) #t)))
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(pass-if-exception "less function taking more than two arguments"
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exception:wrong-num-args
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(sort '(1 2) (lambda (x y z) z)))
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(pass-if "sort!"
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(let ((v (randomize-vector! (make-vector 1000) 1000)))
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(sorted? (sort! v <) <)))
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(pass-if "sort! of non-contigous vector"
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(let* ((a (make-array 0 1000 3))
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(v (make-shared-array a (lambda (i) (list i 0)) 1000)))
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(randomize-vector! v 1000)
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(sorted? (sort! v <) <)))
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(pass-if "sort! of negative-increment vector"
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(let* ((a (make-array 0 1000 3))
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(v (make-shared-array a (lambda (i) (list (- 999 i) 0)) 1000)))
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(randomize-vector! v 1000)
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(sorted? (sort! v <) <)))
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(pass-if "stable-sort!"
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(let ((v (randomize-vector! (make-vector 1000) 1000)))
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(sorted? (stable-sort! v <) <)))
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(pass-if "stable-sort! of non-contigous vector"
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(let* ((a (make-array 0 1000 3))
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(v (make-shared-array a (lambda (i) (list i 0)) 1000)))
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(randomize-vector! v 1000)
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(sorted? (stable-sort! v <) <)))
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(pass-if "stable-sort! of negative-increment vector"
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(let* ((a (make-array 0 1000 3))
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(v (make-shared-array a (lambda (i) (list (- 999 i) 0)) 1000)))
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(randomize-vector! v 1000)
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(sorted? (stable-sort! v <) <))))
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;;;
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;;; stable-sort
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;;;
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(with-test-prefix "stable-sort"
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;; in guile 1.8.0 and 1.8.1 this test failed, an empty list provoked a
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;; wrong-type-arg exception (where it shouldn't)
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(pass-if "empty list"
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(eq? '() (stable-sort '() <)))
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;; Ditto here, but up to 2.0.1 and 2.1.0 and invoking undefined
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;; behavior (integer underflow) leading to crashes.
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(pass-if "empty vector"
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(equal? '#() (stable-sort '#() <))))
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