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;;; print-tests.el --- tests for src/print.c -*- lexical-binding: t; -*-
;; Copyright (C) 2014-2018 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; 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 <https://www.gnu.org/licenses/>.
;;; Code:
(require 'ert)
(ert-deftest print-hex-backslash ()
(should (string= (let ((print-escape-multibyte t)
(print-escape-newlines t))
(prin1-to-string "\u00A2\ff"))
"\"\\x00a2\\ff\"")))
(defun print-tests--prints-with-charset-p (ch odd-charset)
"Return t if `prin1-to-string' prints CH with the `charset' property.
CH is propertized with a `charset' value according to
ODD-CHARSET: if nil, then use the one returned by `char-charset',
otherwise, use a different charset."
(integerp
(string-match
"charset"
(prin1-to-string
(propertize (string ch)
'charset
(if odd-charset
(cl-find (char-charset ch) charset-list :test-not #'eq)
(char-charset ch)))))))
(ert-deftest print-charset-text-property-nil ()
(let ((print-charset-text-property nil))
(should-not (print-tests--prints-with-charset-p ?\xf6 t)) ; Bug#31376.
(should-not (print-tests--prints-with-charset-p ?a t))
(should-not (print-tests--prints-with-charset-p ?\xf6 nil))
(should-not (print-tests--prints-with-charset-p ?a nil))))
(ert-deftest print-charset-text-property-default ()
(let ((print-charset-text-property 'default))
(should (print-tests--prints-with-charset-p ?\xf6 t))
(should-not (print-tests--prints-with-charset-p ?a t))
(should-not (print-tests--prints-with-charset-p ?\xf6 nil))
(should-not (print-tests--prints-with-charset-p ?a nil))))
(ert-deftest print-charset-text-property-t ()
(let ((print-charset-text-property t))
(should (print-tests--prints-with-charset-p ?\xf6 t))
(should (print-tests--prints-with-charset-p ?a t))
(should (print-tests--prints-with-charset-p ?\xf6 nil))
(should (print-tests--prints-with-charset-p ?a nil))))
(ert-deftest terpri ()
(should (string= (with-output-to-string
(princ 'abc)
(should (terpri nil t)))
"abc\n"))
(should (string= (with-output-to-string
(should-not (terpri nil t))
(princ 'xyz))
"xyz"))
(message nil)
(if noninteractive
(progn (should (terpri nil t))
(should-not (terpri nil t))
(princ 'abc)
(should (terpri nil t))
(should-not (terpri nil t)))
(should (string= (progn (should-not (terpri nil t))
(princ 'abc)
(should (terpri nil t))
(current-message))
"abc\n")))
(let ((standard-output
(with-current-buffer (get-buffer-create "*terpri-test*")
(insert "--------")
(point-max-marker))))
(should (terpri nil t))
(should-not (terpri nil t))
(should (string= (with-current-buffer (marker-buffer standard-output)
(buffer-string))
"--------\n"))))
(ert-deftest print-read-roundtrip ()
(let ((sym '\’bar))
(should (eq (read (prin1-to-string sym)) sym))))
(ert-deftest print-bignum ()
(let* ((str "999999999999999999999999999999999")
(val (read str)))
(should (> val most-positive-fixnum))
(should (equal (prin1-to-string val) str))))
(provide 'print-tests)
;;; print-tests.el ends here
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