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+;;; test-custom-file-buffer-copy-link-to-buffer-file.el --- Tests for cj/copy-link-to-buffer-file -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Tests for the cj/copy-link-to-buffer-file function from custom-file-buffer.el
+;;
+;; This function copies the full file:// path of the current buffer's file to
+;; the kill ring. For non-file buffers, it does nothing (no error).
+
+;;; Code:
+
+(require 'ert)
+(require 'testutil-general)
+
+;; Add modules directory to load path
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+
+;; Stub dependencies before loading the module
+(defvar cj/custom-keymap (make-sparse-keymap)
+ "Stub keymap for testing.")
+
+;; Stub ps-print package
+(provide 'ps-print)
+
+;; Now load the actual production module
+(require 'custom-file-buffer)
+
+;;; Setup and Teardown
+
+(defun test-copy-link-setup ()
+ "Set up test environment."
+ (setq kill-ring nil))
+
+(defun test-copy-link-teardown ()
+ "Clean up test environment."
+ ;; Kill all buffers visiting files in the test directory
+ (dolist (buf (buffer-list))
+ (when (buffer-file-name buf)
+ (when (string-prefix-p cj/test-base-dir (buffer-file-name buf))
+ (with-current-buffer buf
+ (set-buffer-modified-p nil)
+ (kill-buffer buf)))))
+ (cj/delete-test-base-dir)
+ (setq kill-ring nil))
+
+;;; Normal Cases
+
+(ert-deftest test-copy-link-simple-file ()
+ "Should copy file:// link for simple file buffer."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name "test.txt" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-non-file-buffer ()
+ "Should do nothing for non-file buffer without error."
+ (test-copy-link-setup)
+ (unwind-protect
+ (with-temp-buffer
+ (setq kill-ring nil)
+ (cj/copy-link-to-buffer-file)
+ (should (null kill-ring)))
+ (test-copy-link-teardown)))
+
+;;; Boundary Cases
+
+(ert-deftest test-copy-link-unicode-filename ()
+ "Should handle unicode in filename."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name "café.txt" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-spaces-in-filename ()
+ "Should handle spaces in filename."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name "my file.txt" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-special-chars-filename ()
+ "Should handle special characters in filename."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name "[test]-(1).txt" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-very-long-path ()
+ "Should handle very long path."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (long-name (make-string 200 ?x))
+ (test-file (expand-file-name (concat long-name ".txt") test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-hidden-file ()
+ "Should handle hidden file."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name ".hidden" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-no-extension ()
+ "Should handle file with no extension."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name "README" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-symlink-file ()
+ "Should use buffer's filename for symlink."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (target-file (expand-file-name "target.txt" test-dir))
+ (link-file (expand-file-name "link.txt" test-dir)))
+ (with-temp-file target-file
+ (insert "content"))
+ (make-symbolic-link target-file link-file)
+ (with-current-buffer (find-file link-file)
+ (cj/copy-link-to-buffer-file)
+ ;; Should use the link name (what buffer-file-name returns)
+ (should (equal (car kill-ring) (concat "file://" (buffer-file-name))))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-kill-ring-has-content ()
+ "Should add to kill ring when it already has content."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name "test.txt" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (kill-new "existing content")
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))
+ (should (equal (cadr kill-ring) "existing content"))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-empty-kill-ring ()
+ "Should populate empty kill ring."
+ (test-copy-link-setup)
+ (unwind-protect
+ (let* ((test-dir (cj/create-test-subdirectory "test"))
+ (test-file (expand-file-name "test.txt" test-dir)))
+ (with-temp-file test-file
+ (insert "content"))
+ (setq kill-ring nil)
+ (with-current-buffer (find-file test-file)
+ (cj/copy-link-to-buffer-file)
+ (should (equal (car kill-ring) (concat "file://" test-file)))
+ (should (= (length kill-ring) 1))))
+ (test-copy-link-teardown)))
+
+(ert-deftest test-copy-link-scratch-buffer ()
+ "Should do nothing for *scratch* buffer."
+ (test-copy-link-setup)
+ (unwind-protect
+ (progn
+ (setq kill-ring nil)
+ (with-current-buffer "*scratch*"
+ (cj/copy-link-to-buffer-file)
+ (should (null kill-ring))))
+ (test-copy-link-teardown)))
+
+(provide 'test-custom-file-buffer-copy-link-to-buffer-file)
+;;; test-custom-file-buffer-copy-link-to-buffer-file.el ends here
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