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;; Filename : test-values.scm
;; About : unit tests for multiple values
;;
;; Copyright (C) 2006 YAMAMOTO Kengo <yamaken AT bp.iij4u.or.jp>
;; Copyright (c) 2007-2008 SigScheme Project <uim-en AT googlegroups.com>
;;
;; All rights reserved.
;;
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions
;; are met:
;;
;; 1. Redistributions of source code must retain the above copyright
;; notice, this list of conditions and the following disclaimer.
;; 2. Redistributions in binary form must reproduce the above copyright
;; notice, this list of conditions and the following disclaimer in the
;; documentation and/or other materials provided with the distribution.
;; 3. Neither the name of authors nor the names of its contributors
;; may be used to endorse or promote products derived from this software
;; without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
;; IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
;; THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
;; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
;; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
;; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
;; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
(require-extension (unittest))
(define tn test-name)
;;
;; values
;;
;; These tests use explicit equivalence predicates instead of assert-equal?, to
;; avoid being affected by multiple-values -specific behavior.
(tn "values invalid forms")
;; Normal continuations accept exactly one value only.
(assert-error (tn) (lambda () (eq? '() (values))))
(assert-error (tn) (lambda () (eq? '() (apply values '()))))
(assert-error (tn) (lambda () (eq? '() (values . 1))))
(assert-error (tn) (lambda () (eq? '() (values 1 2))))
(assert-error (tn) (lambda () (eq? '() (apply values '(1 2)))))
(assert-error (tn) (lambda () (eq? '() (values 1 . 2))))
(tn "values disallowed places")
;; top-level variable
(assert-error (tn) (lambda () (eval '(define foo (values 1 2 3))
(interaction-environment))))
(define foo 1)
(assert-error (tn) (lambda () (eval '(set! foo (values 1 2 3))
(interaction-environment))))
;; internal variable
(assert-error (tn) (lambda () (define bar (values 1 2 3))))
;; others
(assert-error (tn) (lambda () (let ((bar (values 1 2 3))) #t)))
(assert-error (tn) (lambda () (let* ((bar (values 1 2 3))) #t)))
(assert-error (tn) (lambda () (letrec ((bar (values 1 2 3))) #t)))
(assert-error (tn) (lambda () (if (values 1 2 3) #t)))
(assert-error (tn) (lambda () (and (values 1 2 3) #t)))
(assert-error (tn) (lambda () (or (values 1 2 3) #t)))
(assert-error (tn) (lambda () (cond ((values 1 2 3) #t) (else #t))))
(assert-error (tn) (lambda () (case (values 1 2 3) (else #t))))
(assert-error (tn) (lambda () (begin (values 1 2 3) #t)))
(assert-error (tn) (lambda () ((lambda () (values 1 2 3) #t))))
(tn "values")
;; Exactly one value.
(assert-true (tn) (eqv? 1 (values 1)))
(assert-true (tn) (eqv? 1 (apply values '(1))))
(assert-true (tn) (eq? '() (values '())))
(assert-true (tn) (eq? '() (apply values '(()))))
(assert-true (tn) (eq? #f (values #f)))
(assert-true (tn) (eq? #f (apply values '(#f))))
;; Returning multiple values in top-level is allowed (SigScheme-specific).
;; These forms test whether evaluations are passed without blowing up.
(values)
(values 1 2 3)
(apply values '())
(apply values '(1 2 3))
(begin
(values))
(begin
(values 1 2 3))
(begin
(apply values '()))
(begin
(apply values '(1 2 3)))
;;
;; call-with-values
;;
(tn "call-with-values invalid forms")
(assert-error (tn) (lambda ()
(call-with-values)))
(assert-error (tn) (lambda ()
(call-with-values even?)))
(assert-error (tn) (lambda ()
(call-with-values even? #t)))
(assert-error (tn) (lambda ()
(call-with-values #t even?)))
(tn "call-with-values")
(assert-equal? (tn)
-1
(call-with-values * -))
(assert-equal? (tn)
'ok
(call-with-values
(lambda () (values))
(lambda () 'ok)))
(assert-equal? (tn)
'()
(call-with-values
(lambda () (values))
(lambda args args)))
(assert-equal? (tn)
'ok
(call-with-values
(lambda () (apply values '()))
(lambda () 'ok)))
(assert-equal? (tn)
'()
(call-with-values
(lambda () (apply values '()))
(lambda args args)))
(assert-equal? (tn)
1
(call-with-values
(lambda () (values 1))
(lambda (x) x)))
(assert-equal? (tn)
'(1)
(call-with-values
(lambda () (values 1))
(lambda args args)))
(assert-equal? (tn)
1
(call-with-values
(lambda () (apply values '(1)))
(lambda (x) x)))
(assert-equal? (tn)
'(1)
(call-with-values
(lambda () (apply values '(1)))
(lambda args args)))
(assert-equal? (tn)
'(1 2)
(call-with-values
(lambda () (values 1 2))
(lambda (x y) (list x y))))
(assert-equal? (tn)
'(1 2)
(call-with-values
(lambda () (values 1 2))
(lambda args args)))
(assert-equal? (tn)
'(1 2)
(call-with-values
(lambda () (apply values '(1 2)))
(lambda (x y) (list x y))))
(assert-equal? (tn)
'(1 2)
(call-with-values
(lambda () (apply values '(1 2)))
(lambda args args)))
(tn "call-with-values by apply")
(assert-equal? (tn)
-1
(apply call-with-values (list * -)))
(assert-equal? (tn)
'ok
(apply call-with-values
(list (lambda () (values))
(lambda () 'ok))))
(assert-equal? (tn)
'()
(apply call-with-values
(list (lambda () (values))
(lambda args args))))
(assert-equal? (tn)
'ok
(apply call-with-values
(list (lambda () (apply values '()))
(lambda () 'ok))))
(assert-equal? (tn)
'()
(apply call-with-values
(list (lambda () (apply values '()))
(lambda args args))))
(assert-equal? (tn)
1
(apply call-with-values
(list (lambda () (values 1))
(lambda (x) x))))
(assert-equal? (tn)
'(1)
(apply call-with-values
(list (lambda () (values 1))
(lambda args args))))
(assert-equal? (tn)
1
(apply call-with-values
(list (lambda () (apply values '(1)))
(lambda (x) x))))
(assert-equal? (tn)
'(1)
(apply call-with-values
(list (lambda () (apply values '(1)))
(lambda args args))))
(assert-equal? (tn)
'(1 2)
(apply call-with-values
(list (lambda () (values 1 2))
(lambda (x y) (list x y)))))
(assert-equal? (tn)
'(1 2)
(apply call-with-values
(list (lambda () (values 1 2))
(lambda args args))))
(assert-equal? (tn)
'(1 2)
(apply call-with-values
(list (lambda () (apply values '(1 2)))
(lambda (x y) (list x y)))))
(assert-equal? (tn)
'(1 2)
(apply call-with-values
(list (lambda () (apply values '(1 2)))
(lambda args args))))
(tn "call-with-values misc")
;; test whether the variable is properly bound
(assert-equal? (tn)
1
((lambda (n)
(call-with-values
(lambda () (values 2 3 n))
(lambda (dummy1 dummy2 n2)
n2)))
1))
(total-report)
|
