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;;; test-prog-general--find-file-respecting-split.el --- split-aware file open -*- lexical-binding: t; -*-
;;; Commentary:
;; `cj/--find-file-respecting-split' opens a file in another window when the
;; frame is split and in the current window otherwise. It backs
;; `cj/open-project-root-todo' (C-c p t) so the project todo lands in the
;; other pane instead of replacing the buffer in the selected window.
;;
;; `find-file' / `find-file-other-window' are stubbed -- they are the file-I/O
;; boundary -- while the window layout is real.
;;; Code:
(require 'ert)
(require 'cl-lib)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(require 'prog-general)
(ert-deftest test-prog-general--find-file-respecting-split-single-window-uses-current ()
"Normal: a single-window frame opens the file in the current window."
(save-window-excursion
(delete-other-windows)
(let (current-arg other-called)
(cl-letf (((symbol-function 'find-file)
(lambda (f) (setq current-arg f)))
((symbol-function 'find-file-other-window)
(lambda (_f) (setq other-called t))))
(cj/--find-file-respecting-split "/tmp/proj/todo.org"))
(should (equal current-arg "/tmp/proj/todo.org"))
(should-not other-called))))
(ert-deftest test-prog-general--find-file-respecting-split-two-windows-uses-other ()
"Normal: a two-window split opens the file in the other window."
(save-window-excursion
(delete-other-windows)
(split-window-right)
(let (other-arg current-called)
(cl-letf (((symbol-function 'find-file-other-window)
(lambda (f) (setq other-arg f)))
((symbol-function 'find-file)
(lambda (_f) (setq current-called t))))
(cj/--find-file-respecting-split "/tmp/proj/todo.org"))
(should (equal other-arg "/tmp/proj/todo.org"))
(should-not current-called))))
(ert-deftest test-prog-general--find-file-respecting-split-three-windows-uses-other ()
"Boundary: more than two windows still counts as split -> other window."
(save-window-excursion
(delete-other-windows)
(split-window-right)
(split-window-below)
(let (other-called current-called)
(cl-letf (((symbol-function 'find-file-other-window)
(lambda (_f) (setq other-called t)))
((symbol-function 'find-file)
(lambda (_f) (setq current-called t))))
(cj/--find-file-respecting-split "/tmp/proj/todo.org"))
(should other-called)
(should-not current-called))))
(provide 'test-prog-general--find-file-respecting-split)
;;; test-prog-general--find-file-respecting-split.el ends here
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