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;;; test-custom-file-buffer-copy-whole-buffer.el --- Tests for cj/copy-whole-buffer -*- lexical-binding: t; -*-
;;; Commentary:
;; Tests for the cj/copy-whole-buffer function from custom-file-buffer.el
;;
;; This function copies the entire contents of the current buffer to the kill ring.
;; Point and mark are left exactly where they were. No transient region is created.
;;; 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-whole-buffer-setup ()
"Set up test environment."
(setq kill-ring nil))
(defun test-copy-whole-buffer-teardown ()
"Clean up test environment."
(setq kill-ring nil))
;;; Normal Cases
(ert-deftest test-copy-whole-buffer-simple-text ()
"Should copy simple text content to kill ring."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "Hello, world!")
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "Hello, world!")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-preserves-point ()
"Should preserve point position."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "Hello, world!")
(goto-char 7) ; Position in middle
(cj/copy-whole-buffer)
(should (= (point) 7)))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-preserves-mark ()
"Should preserve mark position."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "Hello, world!")
(push-mark 5)
(goto-char 10)
(cj/copy-whole-buffer)
(should (= (mark) 5))
(should (= (point) 10)))
(test-copy-whole-buffer-teardown)))
;;; Boundary Cases
(ert-deftest test-copy-whole-buffer-empty ()
"Should handle empty buffer."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-large ()
"Should handle very large buffer."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(let ((large-content (make-string 100000 ?x)))
(insert large-content)
(cj/copy-whole-buffer)
(should (equal (car kill-ring) large-content))))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-unicode ()
"Should handle unicode content (emoji, RTL text)."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "Hello 👋 مرحبا")
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "Hello 👋 مرحبا")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-binary ()
"Should handle binary content."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert (string 0 1 2 255))
(cj/copy-whole-buffer)
(should (equal (car kill-ring) (string 0 1 2 255))))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-only-whitespace ()
"Should handle buffer with only whitespace."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert " \t\n ")
(cj/copy-whole-buffer)
(should (equal (car kill-ring) " \t\n ")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-newlines-at-boundaries ()
"Should handle newlines at start/end."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "\n\nHello\n\n")
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "\n\nHello\n\n")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-narrowed ()
"Should copy only visible region in narrowed buffer."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "Line 1\nLine 2\nLine 3\n")
(goto-char (point-min))
(forward-line 1)
(narrow-to-region (point) (progn (forward-line 1) (point)))
(cj/copy-whole-buffer)
;; Should copy only the narrowed region
(should (equal (car kill-ring) "Line 2\n")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-read-only ()
"Should work in read-only buffer."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "Read-only content")
(read-only-mode 1)
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "Read-only content")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-kill-ring-has-content ()
"Should add to kill ring when it already has content."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "New content")
(kill-new "existing content")
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "New content"))
(should (equal (cadr kill-ring) "existing content")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-multiline ()
"Should preserve multiline content."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert "Line 1\nLine 2\nLine 3")
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "Line 1\nLine 2\nLine 3")))
(test-copy-whole-buffer-teardown)))
(ert-deftest test-copy-whole-buffer-no-properties ()
"Should strip text properties."
(test-copy-whole-buffer-setup)
(unwind-protect
(with-temp-buffer
(insert (propertize "Hello" 'face 'bold))
(cj/copy-whole-buffer)
(should (equal (car kill-ring) "Hello"))
(should (null (text-properties-at 0 (car kill-ring)))))
(test-copy-whole-buffer-teardown)))
(provide 'test-custom-file-buffer-copy-whole-buffer)
;;; test-custom-file-buffer-copy-whole-buffer.el ends here
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