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-;;; test-theme-theme-persistence.el --- Tests theme persistence mechanism -*- lexical-binding: t; -*-
-
-;;; Commentary:
-;; Unit tests for the persistence of the chosen theme
-
-;;; Code:
-
-(add-to-list 'load-path (concat user-emacs-directory "modules"))
-(require 'ui-theme)
-
-;; ------------------------ Constants / Setup / Teardown -----------------------
-
-(defvar cj/original-theme-name nil)
-(defvar cj/original-newline-setting nil)
-
-(defun cj/test-setup ()
- "Required settings and save state before each test."
-
- ;; save the current theme for restoration
- (setq cj/original-theme-name (symbol-name (car custom-enabled-themes)))
- (setq cj/original-newline-setting mode-require-final-newline)
-
- ;; unload all themes before starting test
- (mapcar #'disable-theme custom-enabled-themes)
-
- ;; no EOF newlines
- (custom-set-variables
- '(require-final-newline nil))
- (setq mode-require-final-newline nil))
-
-(defun cj/test-teardown ()
- "Restore the state before each test."
- ;; restore newline setting
- (setq require-final-newline cj/original-newline-setting)
-
- ;; if there wasn't an original theme, remove all themes
- (if (string= cj/original-theme-name "nil")
- (mapcar #'disable-theme custom-enabled-themes)
- ;; otherwise, restore it
- (load-theme (intern cj/original-theme-name))))
-
-;; ----------------------------------- Tests -----------------------------------
-
-(ert-deftest test-write-file-contents ()
- "Normal Case: Uses function to write a string, reads it back, and compares."
- (cj/test-setup)
- (let ((teststring "testing123")
- (testfilename "test-write-file-contents.txt"))
- ;; call the function
- (should (equal (cj/write-file-contents teststring testfilename)
- 't))
- ;; Read the file and check it's contents
- (should (equal (with-temp-buffer(insert-file-contents testfilename)
- (buffer-string))
- teststring))
- ;; clean up test file
- (delete-file testfilename))
- (cj/test-teardown))
-
-(ert-deftest test-write-file-not-writable ()
- "Test writing to a non-writable file."
- (cl-flet ((file-writeable-p (file) nil))
- (let* ((non-writable-file (make-temp-file "test-non-writable"))
- (should (equal (cj/write-file-contents "cowabunga" non-writable-file) 'nil)))
- (delete-file non-writable-file))))
-
-(ert-deftest test-read-file-contents ()
- "Normal Case: Writes string to file and reads contents using function."
- (cj/test-setup)
- (let ((teststring "testing123")
- (testfilename "test-read-file-contents.txt"))
- ;; write the file
- (with-temp-buffer
- (insert teststring)
- (write-file testfilename))
- ;; call the function
- (should (equal (cj/read-file-contents testfilename)
- teststring))
- ;; clean up test file
- (delete-file testfilename))
- (cj/test-teardown))
-
-(ert-deftest test-read-file-nonexistent ()
- "Test reading from a non-existent file returns nil."
- (cj/test-setup)
- (let* ((filename (concat (number-to-string (random 99999999)) "nonexistent-file.txt"))
- (result (cj/read-file-contents filename)))
- (should (equal result nil)))
- (cj/test-teardown))
-
-(ert-deftest test-get-active-theme ()
- (cj/test-setup)
- "Normal Case: Sets theme, gets theme-name, and compares."
- (let ((expected "wombat"))
- (load-theme (intern expected))
- (should (string= (cj/get-active-theme-name) expected))
- (cj/test-teardown)))
-
-(ert-deftest test-get-active-theme ()
- (cj/test-setup)
- "Normal Case: Sets theme, gets theme-name, and compares."
- (let ((expected "nil"))
- (mapcar #'disable-theme custom-enabled-themes)
- (should (equal (cj/get-active-theme-name) expected))
- (cj/test-teardown)))
-
-(ert-deftest test-save-theme-to-file ()
- "Normal case: sets theme, saves it, reads from file, and compares."
- (cj/test-setup)
- (let ((expected "wombat"))
- (load-theme (intern expected))
- (cj/save-theme-to-file)
- (should (equal (cj/read-file-contents theme-file) expected))
- (cj/test-teardown)))
-
-(ert-deftest test-load-theme-from-file ()
- "Normal case: saves new theme to file, loads it from file, and compares."
- (cj/test-setup)
- (let ((expected "wombat")) ;; the ui theme that test-setup uses.
- (cj/write-file-contents expected theme-file)
- (cj/load-theme-from-file)
- (should (equal expected (cj/get-active-theme-name))))
- (cj/test-teardown))
-
-(ert-deftest test-load-nil-theme ()
- "Corner case: saves 'nil as theme name to file, loads it, and compares to not having a theme."
- (cj/test-setup)
- (let ((expected "nil")) ;; the ui theme that test-setup uses.
- (cj/write-file-contents expected theme-file)
- (cj/load-theme-from-file)
- (should (equal expected (cj/get-active-theme-name))))
- (cj/test-teardown))
-
-(provide 'test-theme-theme-persistence)
-;;; test-theme-theme-persistence.el ends here.