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;;; lexbind-tests.el --- Testing the lexbind byte-compiler
;; Copyright (C) 2011-2016 Free Software Foundation, Inc.
;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
;; Keywords:
;; This program 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.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'ert)
(defconst lexbind-tests
`(
(let ((f #'car))
(let ((f (lambda (x) (cons (funcall f x) (cdr x)))))
(funcall f '(1 . 2))))
)
"List of expression for test.
Each element will be executed by interpreter and with
bytecompiled code, and their results compared.")
(defun lexbind-check-1 (pat)
"Return non-nil if PAT is the same whether directly evalled or compiled."
(let ((warning-minimum-log-level :emergency)
(byte-compile-warnings nil)
(v0 (condition-case nil
(eval pat t)
(error nil)))
(v1 (condition-case nil
(funcall (let ((lexical-binding t))
(byte-compile `(lambda nil ,pat))))
(error nil))))
(equal v0 v1)))
(put 'lexbind-check-1 'ert-explainer 'lexbind-explain-1)
(defun lexbind-explain-1 (pat)
(let ((v0 (condition-case nil
(eval pat t)
(error nil)))
(v1 (condition-case nil
(funcall (let ((lexical-binding t))
(byte-compile (list 'lambda nil pat))))
(error nil))))
(format "Expression `%s' gives `%s' if directly evalled, `%s' if compiled."
pat v0 v1)))
(ert-deftest lexbind-tests ()
"Test the Emacs byte compiler lexbind handling."
(dolist (pat lexbind-tests)
(should (lexbind-check-1 pat))))
(provide 'lexbind-tests)
;;; lexbind-tests.el ends here
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