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;;; test-duet-pane.el --- Tests for the commander mode and pane layout -*- lexical-binding: t; -*-
;; Copyright (C) 2026 Craig Jennings
;; Author: Craig Jennings <c@cjennings.net>
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Tests for the batch-safe core of the pane layer: the pure sibling-pane
;; selector (the dirvish#36 fix without needing a live frame), the duet-mode
;; F-key map, and minor-mode keymap precedence. The two-window resolution is
;; also exercised against a real split frame. The live two-pane launch and the
;; F-key feel in a running daemon are Manual tests.
;;; Code:
(require 'test-bootstrap (expand-file-name "test-bootstrap.el"))
;;; Pure sibling-pane selection
(ert-deftest test-duet-pane-sibling-returns-other-of-two ()
"Given two panes, the sibling is the one that is not the active window."
(should (eq 'b (duet--sibling-pane 'a '(a b))))
(should (eq 'a (duet--sibling-pane 'b '(a b)))))
(ert-deftest test-duet-pane-sibling-errors-unless-exactly-two ()
"Zero, one, or three commander panes is a clear error, not a guess."
(should-error (duet--sibling-pane 'a '(a)) :type 'user-error)
(should-error (duet--sibling-pane 'a '(a b c)) :type 'user-error))
(ert-deftest test-duet-pane-sibling-errors-when-window-not-a-pane ()
"Asking for the sibling of a window that is not one of the panes errors."
(should-error (duet--sibling-pane 'x '(a b)) :type 'user-error))
;;; F-key map
(ert-deftest test-duet-pane-fkeys-bound ()
"The mc/Norton F-keys map to their DUET commands in `duet-mode-map'."
(should (eq 'duet-view (lookup-key duet-mode-map (kbd "<f3>"))))
(should (eq 'duet-edit (lookup-key duet-mode-map (kbd "<f4>"))))
(should (eq 'duet-copy (lookup-key duet-mode-map (kbd "<f5>"))))
(should (eq 'duet-move (lookup-key duet-mode-map (kbd "<f6>"))))
(should (eq 'duet-mkdir (lookup-key duet-mode-map (kbd "<f7>"))))
(should (eq 'duet-delete (lookup-key duet-mode-map (kbd "<f8>"))))
(should (eq 'duet-quit (lookup-key duet-mode-map (kbd "<f10>")))))
(ert-deftest test-duet-pane-q-quits-the-commander ()
"q quits the whole commander (both panes), not just dired's current window."
(should (eq 'duet-quit (lookup-key duet-mode-map (kbd "q")))))
;;; Minor-mode precedence
(ert-deftest test-duet-pane-mode-is-buffer-local ()
"`duet-mode' is a buffer-local minor mode."
(with-temp-buffer
(duet-mode 1)
(should (bound-and-true-p duet-mode)))
(with-temp-buffer
(should-not (bound-and-true-p duet-mode))))
(ert-deftest test-duet-pane-fkey-precedence-inside-vs-outside ()
"An F-key resolves to a DUET command inside a pane, but not outside one."
(with-temp-buffer
(duet-mode 1)
(should (eq 'duet-copy (key-binding (kbd "<f5>")))))
(with-temp-buffer
(should-not (eq 'duet-copy (key-binding (kbd "<f5>"))))))
;;; Not-yet-implemented action commands
(ert-deftest test-duet-pane-unimplemented-actions-error ()
"The viewer actions announce themselves until the viewer phase lands.
The transfer actions (copy/move/mkdir/delete) are wired to the engine and are
covered in test-duet-transfer-exec.el."
(dolist (cmd '(duet-view duet-edit))
(should-error (funcall cmd) :type 'user-error)))
;;; Launch, quit, and two-window resolution against a real frame
(ert-deftest test-duet-pane-other-pane-resolves-sibling-window ()
"With two commander panes, `duet--other-pane' returns the sibling window."
(let ((buf-a (generate-new-buffer " *duet-a*"))
(buf-b (generate-new-buffer " *duet-b*")))
(unwind-protect
(progn
(delete-other-windows)
(set-window-buffer (selected-window) buf-a)
(with-current-buffer buf-a (duet-mode 1))
(let ((win-b (split-window-right)))
(set-window-buffer win-b buf-b)
(with-current-buffer buf-b (duet-mode 1))
(should (= 2 (length (duet--commander-windows))))
(let ((other (duet--other-pane (selected-window))))
(should (window-live-p other))
(should (eq buf-b (window-buffer other))))))
(delete-other-windows)
(kill-buffer buf-a)
(kill-buffer buf-b))))
(ert-deftest test-duet-launch-creates-two-commander-panes ()
"Launching DUET lays out two side-by-side commander panes."
(let ((duet--saved-window-configuration nil))
(unwind-protect
(progn
(delete-other-windows)
(duet "/tmp" "/tmp")
(should (= 2 (length (duet--commander-windows))))
(should (window-live-p (duet--other-pane (selected-window)))))
(delete-other-windows))))
(ert-deftest test-duet-quit-restores-prior-layout ()
"`duet-quit' restores the single-window layout DUET launched from."
(delete-other-windows)
(duet "/tmp" "/tmp")
(should (= 2 (length (duet--commander-windows))))
(duet-quit)
(should (= 1 (length (window-list)))))
(ert-deftest test-duet-pane-directory-reports-pane-dir ()
"`duet--pane-directory' reports the directory a pane is showing."
(let ((duet--saved-window-configuration nil))
(unwind-protect
(progn
(delete-other-windows)
(duet "/tmp" "/tmp")
(should (equal (expand-file-name "/tmp/")
(duet--pane-directory (selected-window)))))
(delete-other-windows))))
(ert-deftest test-duet-quit-without-launch-messages ()
"Quitting with no saved layout messages rather than erroring."
(let ((duet--saved-window-configuration nil))
(duet-quit)
(should-not duet--saved-window-configuration)))
(ert-deftest test-duet-other-pane-defaults-to-selected-window ()
"Called with no argument, `duet--other-pane' resolves from the selected window."
(let ((duet--saved-window-configuration nil))
(unwind-protect
(progn
(delete-other-windows)
(duet "/tmp" "/tmp")
(should (window-live-p (duet--other-pane))))
(delete-other-windows))))
(ert-deftest test-duet-launch-defaults-to-current-directory ()
"With no directory arguments, both panes open on the current directory."
(let ((duet--saved-window-configuration nil)
(default-directory "/tmp/"))
(unwind-protect
(progn
(delete-other-windows)
(duet)
(should (= 2 (length (duet--commander-windows)))))
(delete-other-windows))))
(provide 'test-duet-pane)
;;; test-duet-pane.el ends here
|
