diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/test-ui-config--buffer-cursor-state.el | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/tests/test-ui-config--buffer-cursor-state.el b/tests/test-ui-config--buffer-cursor-state.el new file mode 100644 index 00000000..add0d030 --- /dev/null +++ b/tests/test-ui-config--buffer-cursor-state.el @@ -0,0 +1,93 @@ +;;; test-ui-config--buffer-cursor-state.el --- Tests for cursor-state classification -*- lexical-binding: t; -*- + +;;; Commentary: +;; `cj/--buffer-cursor-state' picks the buffer-state symbol that +;; `cj/set-cursor-color-according-to-mode' maps to a cursor color via +;; `cj/buffer-status-colors'. The subtle case: a live vterm buffer is +;; technically `buffer-read-only' (the `vterm-mode' body sets it) but the +;; user can type into it -- keystrokes go to the terminal process -- so it +;; must report a writeable state, not `read-only'. `vterm-copy-mode' is +;; the exception: there the buffer really is a read-only Emacs buffer the +;; user navigates, so `read-only' (the orange cursor) is correct and kept. + +;;; Code: + +(require 'ert) +(require 'cl-lib) + +(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory)) +(add-to-list 'load-path (expand-file-name "tests" user-emacs-directory)) +(setq load-prefer-newer t) +(defvar vterm-copy-mode nil) +(require 'ui-config) +(require 'testutil-vterm-buffers) + +(ert-deftest test-ui-config-buffer-cursor-state-readwrite-unmodified () + "Normal: a clean writeable buffer reports `unmodified'." + (with-temp-buffer + (set-buffer-modified-p nil) + (should (eq (cj/--buffer-cursor-state) 'unmodified)))) + +(ert-deftest test-ui-config-buffer-cursor-state-readwrite-modified () + "Normal: a writeable buffer with unsaved changes reports `modified'." + (with-temp-buffer + (insert "x") + (should (eq (cj/--buffer-cursor-state) 'modified)))) + +(ert-deftest test-ui-config-buffer-cursor-state-read-only () + "Normal: a plain read-only buffer reports `read-only'." + (with-temp-buffer + (setq buffer-read-only t) + (should (eq (cj/--buffer-cursor-state) 'read-only)))) + +(ert-deftest test-ui-config-buffer-cursor-state-overwrite () + "Boundary: `overwrite-mode' wins over the modified/unmodified split." + (with-temp-buffer + (insert "x") + (overwrite-mode 1) + (should (eq (cj/--buffer-cursor-state) 'overwrite)))) + +(ert-deftest test-ui-config-buffer-cursor-state-live-vterm-is-writeable () + "Boundary: a live vterm buffer is `buffer-read-only' but reports a +writeable state -- the user types into the terminal process there, so the +read-only (orange) cursor would be misleading." + (let ((buf (cj/test--make-fake-vterm-buffer "*test-vterm-cursor-state*"))) + (unwind-protect + (with-current-buffer buf + (setq buffer-read-only t) ; `vterm-mode' does this + (setq-local vterm-copy-mode nil) + (should-not (eq (cj/--buffer-cursor-state) 'read-only))) + (when (buffer-live-p buf) (kill-buffer buf))))) + +(ert-deftest test-ui-config-buffer-cursor-state-vterm-copy-mode-is-read-only () + "Boundary: in `vterm-copy-mode' the vterm buffer is a read-only Emacs +buffer the user navigates, so `read-only' (orange) is kept." + (let ((buf (cj/test--make-fake-vterm-buffer "*test-vterm-cursor-state-copy*"))) + (unwind-protect + (with-current-buffer buf + (setq buffer-read-only t) + (setq-local vterm-copy-mode t) + (should (eq (cj/--buffer-cursor-state) 'read-only))) + (when (buffer-live-p buf) (kill-buffer buf))))) + +(ert-deftest test-ui-config-set-cursor-color-live-vterm-not-orange () + "Normal: in a live vterm the cursor-color hook picks a writeable color, +not the read-only orange -- even though the vterm buffer is read-only." + (let ((buf (cj/test--make-fake-vterm-buffer "*test-vterm-cursor-color*")) + (applied 'unset)) + (unwind-protect + (with-current-buffer buf + (setq buffer-read-only t) + (setq-local vterm-copy-mode nil) + (let ((cj/-cursor-last-color nil) + (cj/-cursor-last-buffer nil)) + (cl-letf (((symbol-function 'set-cursor-color) + (lambda (c) (setq applied c)))) + (cj/set-cursor-color-according-to-mode))) + (should (stringp applied)) + (should-not (equal applied + (alist-get 'read-only cj/buffer-status-colors)))) + (when (buffer-live-p buf) (kill-buffer buf))))) + +(provide 'test-ui-config--buffer-cursor-state) +;;; test-ui-config--buffer-cursor-state.el ends here |