1 files changed, 70 insertions, 0 deletions
diff --git a/tests/test-ai-term--dispatch.el b/tests/test-ai-term--dispatch.el
new file mode 100644
index 00000000..91b5e1bc
--- /dev/null
+++ b/tests/test-ai-term--dispatch.el
@@ -0,0 +1,70 @@
+;;; test-ai-term--dispatch.el --- Tests for cj/--ai-term-dispatch -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; The dispatch helper is a pure decision function used by F9.
+;; Returns one of (toggle-off . WIN), (redisplay-recent . BUF),
+;; or (pick-project) based on whether an agent buffer is currently
+;; displayed and whether any alive agent buffers exist.  Tests mock
+;; the two underlying helpers so the dispatch logic can be exercised
+;; without touching real windows.
+
+;;; 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))
+(require 'ai-term)
+(require 'testutil-ghostel-buffers)
+
+(ert-deftest test-ai-term--dispatch-window-displayed-returns-toggle-off ()
+  "Normal: displayed agent window -> (toggle-off . WIN)."
+  (let ((sentinel-win 'fake-window))
+    (cl-letf (((symbol-function 'cj/--ai-term-displayed-agent-window)
+               (lambda (&optional _frame) sentinel-win)))
+      (should (equal (cj/--ai-term-dispatch)
+                     (cons 'toggle-off sentinel-win))))))
+
+(ert-deftest test-ai-term--dispatch-no-window-single-buffer-returns-redisplay-recent ()
+  "Normal: no displayed agent, one alive buffer -> redisplay-recent + buffer."
+  (cj/test--kill-agent-buffers)
+  (let ((b1 (get-buffer-create "agent [single]")))
+    (unwind-protect
+        (cl-letf (((symbol-function 'cj/--ai-term-displayed-agent-window)
+                   (lambda (&optional _frame) nil))
+                  ((symbol-function 'cj/--ai-term-agent-buffers)
+                   (lambda () (list b1))))
+          (should (equal (cj/--ai-term-dispatch)
+                         (cons 'redisplay-recent b1))))
+      (kill-buffer b1))))
+
+(ert-deftest test-ai-term--dispatch-no-window-multiple-buffers-returns-redisplay-recent ()
+  "Normal: no displayed agent, 2+ alive buffers -> redisplay-recent + MRU.
+F9 redisplays the most-recently-selected agent (head of buffer-list
+order) rather than opening the project picker, so the user toggles
+THE agent they were last using.  Other agents are reachable via M-F9."
+  (cj/test--kill-agent-buffers)
+  (let ((b1 (get-buffer-create "agent [a]"))
+        (b2 (get-buffer-create "agent [b]")))
+    (unwind-protect
+        (cl-letf (((symbol-function 'cj/--ai-term-displayed-agent-window)
+                   (lambda (&optional _frame) nil))
+                  ((symbol-function 'cj/--ai-term-agent-buffers)
+                   (lambda () (list b1 b2))))
+          (should (equal (cj/--ai-term-dispatch)
+                         (cons 'redisplay-recent b1))))
+      (kill-buffer b1)
+      (kill-buffer b2))))
+
+(ert-deftest test-ai-term--dispatch-no-window-zero-buffers-returns-pick-project ()
+  "Boundary: no displayed agent, zero alive buffers -> pick-project."
+  (cj/test--kill-agent-buffers)
+  (cl-letf (((symbol-function 'cj/--ai-term-displayed-agent-window)
+             (lambda (&optional _frame) nil))
+            ((symbol-function 'cj/--ai-term-agent-buffers)
+             (lambda () nil)))
+    (should (equal (cj/--ai-term-dispatch) '(pick-project)))))
+
+(provide 'test-ai-term--dispatch)
+;;; test-ai-term--dispatch.el ends here