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;;;; match.test --- (ice-9 match) -*- mode: scheme; coding: utf-8; -*-
;;;;
;;;; Copyright (C) 2010 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
(define-module (test-match)
#:use-module (ice-9 match)
#:use-module (test-suite lib))
(define exception:match-error
(cons 'match-error "^.*$"))
(with-test-prefix "matches"
(pass-if "wildcard"
(match "hello" (_ #t)))
(pass-if "symbol"
(match 'foo ('foo #t)))
(pass-if "string"
(match "bar" ("bar" #t)))
(pass-if "number"
(match 777 (777 #t)))
(pass-if "char"
(match #\g (#\g #t)))
(pass-if "sexp"
(match '(a b c) ('(a b c) #t)))
(pass-if "predicate"
(match '(a 1 2)
(('a (and (? odd?) one) (? even?))
(= one 1))))
(pass-if "list"
(let ((lst '(a b c)))
(match lst
((x y z)
(equal? (list x y z) lst)))))
(pass-if "list rest..."
(let ((lst '(a b c)))
(match lst
((x rest ...)
(and (eq? x 'a) (equal? rest '(b c)))))))
(pass-if "list . rest"
(let ((lst '(a b c)))
(match lst
((x . rest)
(and (eq? x 'a) (equal? rest '(b c)))))))
(pass-if "list ..1"
(match '(a b c)
((x ..1)
(equal? x '(a b c)))))
(pass-if "list ..1, with predicate"
(match '(a b c)
(((and x (? symbol?)) ..1)
(equal? x '(a b c)))))
(pass-if "list ..1, nested"
(match '((1 2) (3 4))
(((x ..1) ..1)
(equal? x '((1 2) (3 4))))))
(pass-if "tree"
(let ((tree '(one (two 2) (three 3 (and 4 (and 5))))))
(match tree
(('one ('two x) ('three y ('and z '(and 5))))
(equal? (list x y z) '(2 3 4)))))))
(with-test-prefix "doesn't match"
(pass-if-exception "tree"
exception:match-error
(match '(a (b c))
((foo (bar)) #t)))
(pass-if-exception "list ..1"
exception:match-error
(match '()
((x ..1) #f)))
(pass-if-exception "list ..1, with predicate"
exception:match-error
(match '(a 0)
(((and x (? symbol?)) ..1)
(equal? x '(a b c))))))
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