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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (test-records)
#:use-module (srfi srfi-64)
#:use-module (ice-9 match)
#:use-module (guix records))
(test-begin "records")
(test-assert "define-record-type*"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar)
(baz foo-baz (default (+ 40 2))))
(and (match (foo (bar 1) (baz 2))
(($ <foo> 1 2) #t))
(match (foo (baz 2) (bar 1))
(($ <foo> 1 2) #t))
(match (foo (bar 1))
(($ <foo> 1 42) #t)))))
(test-assert "define-record-type* with letrec* behavior"
;; Make sure field initializers can refer to each other as if they were in
;; a `letrec*'.
(begin
(define-record-type* <bar> bar make-bar
foo?
(x bar-x)
(y bar-y (default (+ 40 2)))
(z bar-z))
(and (match (bar (x 1) (y (+ x 1)) (z (* y 2)))
(($ <bar> 1 2 4) #t))
(match (bar (x 7) (z (* x 3)))
(($ <bar> 7 42 21)))
(match (bar (z 21) (x (/ z 3)))
(($ <bar> 7 42 21))))))
(test-assert "define-record-type* & inherit"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar)
(baz foo-baz (default (+ 40 2))))
(let* ((a (foo (bar 1)))
(b (foo (inherit a) (baz 2)))
(c (foo (inherit b) (bar -2)))
(d (foo (inherit c)))
(e (foo (inherit (foo (bar 42))) (baz 77))))
(and (match a (($ <foo> 1 42) #t))
(match b (($ <foo> 1 2) #t))
(match c (($ <foo> -2 2) #t))
(equal? c d)
(match e (($ <foo> 42 77) #t))))))
(test-assert "define-record-type* & inherit & letrec* behavior"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar)
(baz foo-baz (default (+ 40 2))))
(let* ((a (foo (bar 77)))
(b (foo (inherit a) (bar 1) (baz (+ bar 1))))
(c (foo (inherit b) (baz 2) (bar (- baz 1)))))
(and (match a (($ <foo> 77 42) #t))
(match b (($ <foo> 1 2) #t))
(equal? b c)))))
(test-assert "define-record-type* & thunked"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar)
(baz foo-baz (thunked)))
(let* ((calls 0)
(x (foo (bar 2)
(baz (begin (set! calls (1+ calls)) 3)))))
(and (zero? calls)
(equal? (foo-bar x) 2)
(equal? (foo-baz x) 3) (= 1 calls)
(equal? (foo-baz x) 3) (= 2 calls)))))
(test-assert "define-record-type* & thunked & default"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar)
(baz foo-baz (thunked) (default 42)))
(let ((mark (make-parameter #f)))
(let ((x (foo (bar 2) (baz (mark))))
(y (foo (bar 2))))
(and (equal? (foo-bar x) 2)
(parameterize ((mark (cons 'a 'b)))
(eq? (foo-baz x) (mark)))
(equal? (foo-bar y) 2)
(equal? (foo-baz y) 42))))))
(test-assert "define-record-type* & thunked & inherited"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar (thunked))
(baz foo-baz (thunked) (default 42)))
(let ((mark (make-parameter #f)))
(let* ((x (foo (bar 2) (baz (mark))))
(y (foo (inherit x) (bar (mark)))))
(and (equal? (foo-bar x) 2)
(parameterize ((mark (cons 'a 'b)))
(eq? (foo-baz x) (mark)))
(parameterize ((mark (cons 'a 'b)))
(eq? (foo-bar y) (mark)))
(parameterize ((mark (cons 'a 'b)))
(eq? (foo-baz y) (mark))))))))
(test-end)
(exit (= (test-runner-fail-count (test-runner-current)) 0))
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