test/src/print-tests.el

   1 ;;; print-tests.el --- tests for src/print.c         -*- lexical-binding: t; -*-
   2
   3 ;; Copyright (C) 2014-2018 Free Software Foundation, Inc.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; This program is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation, either version 3 of the License, or
  10 ;; (at your option) any later version.
  11
  12 ;; This program is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19
  20 ;;; Code:
  21
  22 (require 'ert)
  23
  24 (ert-deftest print-hex-backslash ()
  25   (should (string= (let ((print-escape-multibyte t)
  26                          (print-escape-newlines t))
  27                      (prin1-to-string "\u00A2\ff"))
  28                    "\"\\x00a2\\ff\"")))
  29
  30 (defun print-tests--prints-with-charset-p (ch odd-charset)
  31   "Return t if `prin1-to-string' prints CH with the `charset' property.
  32 CH is propertized with a `charset' value according to
  33 ODD-CHARSET: if nil, then use the one returned by `char-charset',
  34 otherwise, use a different charset."
  35   (integerp
  36    (string-match
  37     "charset"
  38     (prin1-to-string
  39      (propertize (string ch)
  40                  'charset
  41                  (if odd-charset
  42                      (cl-find (char-charset ch) charset-list :test-not #'eq)
  43                    (char-charset ch)))))))
  44
  45 (ert-deftest print-charset-text-property-nil ()
  46   (let ((print-charset-text-property nil))
  47     (should-not (print-tests--prints-with-charset-p ?\xf6 t)) ; Bug#31376.
  48     (should-not (print-tests--prints-with-charset-p ?a t))
  49     (should-not (print-tests--prints-with-charset-p ?\xf6 nil))
  50     (should-not (print-tests--prints-with-charset-p ?a nil))))
  51
  52 (ert-deftest print-charset-text-property-default ()
  53   (let ((print-charset-text-property 'default))
  54     (should (print-tests--prints-with-charset-p ?\xf6 t))
  55     (should-not (print-tests--prints-with-charset-p ?a t))
  56     (should-not (print-tests--prints-with-charset-p ?\xf6 nil))
  57     (should-not (print-tests--prints-with-charset-p ?a nil))))
  58
  59 (ert-deftest print-charset-text-property-t ()
  60   (let ((print-charset-text-property t))
  61     (should (print-tests--prints-with-charset-p ?\xf6 t))
  62     (should (print-tests--prints-with-charset-p ?a t))
  63     (should (print-tests--prints-with-charset-p ?\xf6 nil))
  64     (should (print-tests--prints-with-charset-p ?a nil))))
  65
  66 (ert-deftest terpri ()
  67   (should (string= (with-output-to-string
  68                      (princ 'abc)
  69                      (should (terpri nil t)))
  70                    "abc\n"))
  71   (should (string= (with-output-to-string
  72                      (should-not (terpri nil t))
  73                      (princ 'xyz))
  74                    "xyz"))
  75   (message nil)
  76   (if noninteractive
  77       (progn (should            (terpri nil t))
  78              (should-not        (terpri nil t))
  79              (princ 'abc)
  80              (should            (terpri nil t))
  81              (should-not        (terpri nil t)))
  82     (should (string= (progn (should-not (terpri nil t))
  83                             (princ 'abc)
  84                             (should (terpri nil t))
  85                             (current-message))
  86                      "abc\n")))
  87   (let ((standard-output
  88          (with-current-buffer (get-buffer-create "*terpri-test*")
  89            (insert "--------")
  90            (point-max-marker))))
  91     (should     (terpri nil t))
  92     (should-not (terpri nil t))
  93     (should (string= (with-current-buffer (marker-buffer standard-output)
  94                        (buffer-string))
  95                      "--------\n"))))
  96
  97 (ert-deftest print-read-roundtrip ()
  98   (let ((sym '\’bar))
  99     (should (eq (read (prin1-to-string sym)) sym))))
 100
 101 (provide 'print-tests)
 102 ;;; print-tests.el ends here