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;;; test-chime--truncate-title.el --- Tests for chime--truncate-title -*- lexical-binding: t; -*-
;; Copyright (C) 2024-2026 Craig Jennings
;; Author: Craig Jennings <c@cjennings.net>
;; 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:
;; Unit tests for chime--truncate-title function.
;; Tests title truncation with ellipsis based on chime-max-title-length.
;;; Code:
;; Initialize package system for batch mode
(when noninteractive
(package-initialize))
(require 'ert)
(require 'dash)
(require 'alert)
;; Load chime from parent directory
(load (expand-file-name "../chime.el") nil t)
;;; Setup and Teardown
(defun test-chime--truncate-title-setup ()
"Setup test environment."
;; No special setup needed
)
(defun test-chime--truncate-title-teardown ()
"Teardown test environment."
;; No special teardown needed
)
;;; Normal Cases
(ert-deftest test-chime--truncate-title-normal-short-title-unchanged ()
"Test that short title under max length is unchanged."
(test-chime--truncate-title-setup)
(unwind-protect
(let ((chime-max-title-length 20))
(should (equal (chime--truncate-title "Short title")
"Short title")))
(test-chime--truncate-title-teardown)))
(ert-deftest test-chime--truncate-title-normal-long-title-truncated-with-ellipsis ()
"Test that long title is truncated with ... appended."
(test-chime--truncate-title-setup)
(unwind-protect
(let ((chime-max-title-length 15))
(should (equal (chime--truncate-title "This is a very long title that needs truncation")
"This is a ve...")))
(test-chime--truncate-title-teardown)))
(ert-deftest test-chime--truncate-title-normal-unicode-characters-truncated-correctly ()
"Test that unicode characters are handled correctly in truncation."
(test-chime--truncate-title-setup)
(unwind-protect
(let ((chime-max-title-length 10))
(should (equal (chime--truncate-title "Meeting 🎉 with team")
"Meeting...")))
(test-chime--truncate-title-teardown)))
;;; Boundary Cases
(ert-deftest test-chime--truncate-title-boundary-exact-max-length-unchanged ()
"Test that title exactly at max length is unchanged."
(test-chime--truncate-title-setup)
(unwind-protect
(let ((chime-max-title-length 12))
(should (equal (chime--truncate-title "Twelve chars")
"Twelve chars")))
(test-chime--truncate-title-teardown)))
(ert-deftest test-chime--truncate-title-boundary-one-char-over-max-truncated ()
"Test that title one character over max is truncated."
(test-chime--truncate-title-setup)
(unwind-protect
(let ((chime-max-title-length 10))
(should (equal (chime--truncate-title "Eleven char")
"Eleven ...")))
(test-chime--truncate-title-teardown)))
(ert-deftest test-chime--truncate-title-boundary-empty-string-returns-empty ()
"Test that empty string returns empty string."
(test-chime--truncate-title-setup)
(unwind-protect
(let ((chime-max-title-length 20))
(should (equal (chime--truncate-title "")
"")))
(test-chime--truncate-title-teardown)))
;;; Error Cases
(ert-deftest test-chime--truncate-title-error-nil-title-returns-empty ()
"Test that nil title returns empty string."
(test-chime--truncate-title-setup)
(unwind-protect
(let ((chime-max-title-length 20))
(should (equal (chime--truncate-title nil)
"")))
(test-chime--truncate-title-teardown)))
(provide 'test-chime--truncate-title)
;;; test-chime--truncate-title.el ends here
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