--- /dev/null
+;;; paren-tests.el --- Tests for paren.el -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2019 Free Software Foundation, Inc.
+
+;; Author: Simen Heggestøyl <simenheg@gmail.com>
+;; Keywords:
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 Emacs 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 Emacs. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;
+
+;;; Code:
+
+(require 'ert)
+(require 'paren)
+
+(ert-deftest paren-tests-unescaped-p ()
+ (with-temp-buffer
+ (insert "(insert)")
+ (backward-char)
+ (should (show-paren--unescaped-p (point)))
+ (insert "\\")
+ (should-not (show-paren--unescaped-p (point)))))
+
+(ert-deftest paren-tests-categorize-paren ()
+ (with-temp-buffer
+ (insert "(insert)")
+ (backward-char)
+ (should (equal (show-paren--categorize-paren (point))
+ (cons -1 (+ (point) 1))))
+ (goto-char (point-min))
+ (should (equal (show-paren--categorize-paren (point))
+ (cons 1 (point))))))
+
+(ert-deftest paren-tests-locate-near-paren ()
+ (with-temp-buffer
+ (let ((show-paren-when-point-inside-paren nil)
+ (show-paren-when-point-in-periphery nil))
+ (insert "(insert)")
+ (should (equal (show-paren--locate-near-paren)
+ (cons -1 (point))))
+ (backward-char)
+ (should-not (show-paren--locate-near-paren))
+ (goto-char (point-min))
+ (should (equal (show-paren--locate-near-paren)
+ (cons 1 (point-min))))
+ (forward-char)
+ (should-not (show-paren--locate-near-paren)))))
+
+(ert-deftest paren-tests-locate-near-paren-inside ()
+ (with-temp-buffer
+ (let ((show-paren-when-point-inside-paren t)
+ (show-paren-when-point-in-periphery nil))
+ (insert "(insert)")
+ (should (equal (show-paren--locate-near-paren)
+ (cons -1 (point))))
+ (backward-char)
+ (should (equal (show-paren--locate-near-paren)
+ (cons -1 (+ (point) 1))))
+ (goto-char (point-min))
+ (should (equal (show-paren--locate-near-paren)
+ (cons 1 (point-min))))
+ (forward-char)
+ (should (equal (show-paren--locate-near-paren)
+ (cons 1 (point-min)))))))
+
+(ert-deftest paren-tests-locate-near-paren-in-periphery ()
+ (with-temp-buffer
+ (let ((show-paren-when-point-inside-paren nil)
+ (show-paren-when-point-in-periphery t))
+ (insert " (insert) ")
+ (should (equal (show-paren--locate-near-paren)
+ (cons -1 (- (point) 1))))
+ (backward-char 2)
+ (should-not (show-paren--locate-near-paren))
+ (goto-char (point-min))
+ (should (equal (show-paren--locate-near-paren)
+ (cons 1 (+ (point) 1))))
+ (forward-char)
+ (should (equal (show-paren--locate-near-paren)
+ (cons 1 (point))))
+ (forward-char)
+ (should-not (show-paren--locate-near-paren)))))
+
+(ert-deftest paren-tests-default ()
+ (with-temp-buffer
+ (insert "(insert")
+ (goto-char (point-min))
+ (should (equal (show-paren--default)
+ (list (point) (+ (point) 1)
+ nil nil
+ t)))
+ (goto-char (point-max))
+ (insert ")")
+ (should (equal (show-paren--default)
+ (list (- (point) 1) (point)
+ (point-min) (+ (point-min) 1)
+ nil)))
+ (goto-char (point-min))
+ (should (equal (show-paren--default)
+ (list (point) (+ (point) 1)
+ (- (point-max) 1) (point-max)
+ nil)))))
+
+(provide 'paren-tests)
+;;; paren-tests.el ends here