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;;; test-ai-vterm--server-display.el --- Tests for emacsclient window routing -*- lexical-binding: t; -*-
;;; Commentary:
;; `cj/--ai-vterm-server-display' is wired as `server-window' so a file
;; opened via `emacsclient -n' (e.g. when Craig tells the agent to open
;; something) doesn't land on top of the agent vterm. When the selected
;; window shows an `agent [...]' buffer, the file goes to a non-agent
;; window instead -- splitting one off the agent if it is the only window.
;; `cj/--ai-vterm-non-agent-window' picks that window.
;;; Code:
(require 'ert)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(add-to-list 'load-path (expand-file-name "tests" user-emacs-directory))
(require 'ai-vterm)
(require 'server)
(require 'testutil-vterm-buffers)
(ert-deftest test-ai-vterm--non-agent-window-finds-code-window ()
"Normal: agent on the right, code on the left -> returns the code window."
(cj/test--kill-agent-buffers)
(let ((agent (get-buffer-create "agent [proj]"))
(code (get-buffer-create "code.el")))
(unwind-protect
(save-window-excursion
(delete-other-windows)
(set-window-buffer (selected-window) code)
(let ((right (split-window-right)))
(set-window-buffer right agent)
(let ((found (cj/--ai-vterm-non-agent-window right)))
(should (windowp found))
(should (eq (window-buffer found) code)))))
(kill-buffer agent)
(kill-buffer code))))
(ert-deftest test-ai-vterm--non-agent-window-none-when-only-agent ()
"Boundary: the agent window is the only one -> nil."
(cj/test--kill-agent-buffers)
(let ((agent (get-buffer-create "agent [solo]")))
(unwind-protect
(save-window-excursion
(delete-other-windows)
(set-window-buffer (selected-window) agent)
(should-not (cj/--ai-vterm-non-agent-window (selected-window))))
(kill-buffer agent))))
(ert-deftest test-ai-vterm--non-agent-window-skips-dedicated ()
"Boundary: a dedicated non-agent window is not a valid target."
(cj/test--kill-agent-buffers)
(let ((agent (get-buffer-create "agent [proj]"))
(side (get-buffer-create "*dedicated-side*")))
(unwind-protect
(save-window-excursion
(delete-other-windows)
(set-window-buffer (selected-window) agent)
(let ((w (split-window-right)))
(set-window-buffer w side)
(set-window-dedicated-p w t)
(unwind-protect
(should-not (cj/--ai-vterm-non-agent-window (selected-window)))
(set-window-dedicated-p w nil))))
(kill-buffer agent)
(kill-buffer side))))
(ert-deftest test-ai-vterm--server-display-routes-around-agent ()
"Normal: selected window is the agent -> the file lands in the other
window and the agent window keeps the agent buffer."
(cj/test--kill-agent-buffers)
(let ((agent (get-buffer-create "agent [proj]"))
(code (get-buffer-create "code.el"))
(file (get-buffer-create "opened-by-emacsclient.el")))
(unwind-protect
(save-window-excursion
(delete-other-windows)
(set-window-buffer (selected-window) code)
(let ((agent-win (split-window-right)))
(set-window-buffer agent-win agent)
(select-window agent-win)
(cj/--ai-vterm-server-display file)
(should (eq (window-buffer agent-win) agent))
(should (get-buffer-window file))
(should-not (eq (get-buffer-window file) agent-win))))
(kill-buffer agent)
(kill-buffer code)
(kill-buffer file))))
(ert-deftest test-ai-vterm--server-display-splits-when-agent-is-only-window ()
"Boundary: the agent is the only window -> a window is split off for the
file; the agent window keeps the agent buffer."
(cj/test--kill-agent-buffers)
(let ((agent (get-buffer-create "agent [solo]"))
(file (get-buffer-create "opened.el")))
(unwind-protect
(save-window-excursion
(delete-other-windows)
(set-window-buffer (selected-window) agent)
(let ((agent-win (selected-window)))
(cj/--ai-vterm-server-display file)
(should (= 2 (length (window-list (selected-frame) 'never))))
(should (eq (window-buffer agent-win) agent))
(should (eq (window-buffer (get-buffer-window file)) file))))
(kill-buffer agent)
(kill-buffer file))))
(ert-deftest test-ai-vterm--server-display-passthrough-when-not-agent ()
"Normal: selected window is a regular buffer -> the file is displayed
normally and nothing special happens (no agent window to protect)."
(cj/test--kill-agent-buffers)
(let ((code (get-buffer-create "code.el"))
(file (get-buffer-create "opened.el")))
(unwind-protect
(save-window-excursion
(delete-other-windows)
(set-window-buffer (selected-window) code)
(cj/--ai-vterm-server-display file)
(should (get-buffer-window file)))
(kill-buffer code)
(kill-buffer file))))
(ert-deftest test-ai-vterm--server-window-wired-to-helper ()
"Normal: the module sets `server-window' to its display function."
(should (eq server-window #'cj/--ai-vterm-server-display)))
(provide 'test-ai-vterm--server-display)
;;; test-ai-vterm--server-display.el ends here
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