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+;;; test-org-roam-config-copy-todo-to-today.el --- Tests for org-roam TODO completion hook -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Tests for the org-after-todo-state-change-hook configuration that copies
+;; completed tasks to daily org-roam nodes.
+;;
+;; The hook should trigger for ANY org-mode done state (DONE, CANCELLED, etc.),
+;; not just "DONE". This is verified by checking membership in org-done-keywords.
+;;
+;; The critical behavior being tested is that the hook is registered
+;; immediately when org-mode loads, NOT when org-roam loads (which happens
+;; lazily). This ensures tasks can be copied to dailies even before the user
+;; has invoked any org-roam commands.
+
+;;; Code:
+
+(require 'ert)
+(require 'testutil-general)
+
+;;; Setup and Teardown
+
+(defun test-org-roam-todo-hook-setup ()
+ "Setup for org-roam todo hook tests."
+ (cj/create-test-base-dir))
+
+(defun test-org-roam-todo-hook-teardown ()
+ "Teardown for org-roam todo hook tests."
+ (cj/delete-test-base-dir))
+
+;;; Normal Cases
+
+(ert-deftest test-org-roam-hook-registered-after-org-loads ()
+ "The hook should be registered after org loads."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (progn
+ (require 'org)
+ (require 'org-roam-config)
+ (should (consp org-after-todo-state-change-hook)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-calls-copy-function-on-done ()
+ "The hook lambda should call copy function when state is DONE."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED")) ; Set done keywords for test
+ (setq org-last-state nil) ; No previous state (new task)
+ (setq org-state "DONE") ; Dynamic variable used by org-mode hooks
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-calls-copy-function-on-cancelled ()
+ "The hook lambda should call copy function when state is CANCELLED."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED")) ; Set done keywords for test
+ (setq org-last-state nil) ; No previous state (new task)
+ (setq org-state "CANCELLED") ; Dynamic variable used by org-mode hooks
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+;;; Boundary Cases
+
+(ert-deftest test-org-roam-hook-registered-before-org-roam-loads ()
+ "The hook should be registered even if org-roam has not loaded yet."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (progn
+ (require 'org)
+ (require 'org-roam-config)
+ (should (consp org-after-todo-state-change-hook))
+ (should-not (featurep 'org-roam)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-calls-copy-on-todo-to-done ()
+ "The hook should copy when transitioning FROM TODO TO DONE."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED"))
+ (setq org-last-state "TODO") ; Previous state was TODO (non-done)
+ (setq org-state "DONE") ; New state is DONE
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-calls-copy-on-in-progress-to-done ()
+ "The hook should copy when transitioning FROM IN-PROGRESS TO DONE."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED"))
+ (setq org-last-state "IN-PROGRESS") ; Previous state was IN-PROGRESS (non-done)
+ (setq org-state "DONE") ; New state is DONE
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-calls-copy-on-waiting-to-cancelled ()
+ "The hook should copy when transitioning FROM WAITING TO CANCELLED."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED"))
+ (setq org-last-state "WAITING") ; Previous state was WAITING (non-done)
+ (setq org-state "CANCELLED") ; New state is CANCELLED
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-ignores-done-to-cancelled ()
+ "The hook should NOT copy when transitioning FROM DONE TO CANCELLED (both done)."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED"))
+ (setq org-last-state "DONE") ; Previous state was DONE (already done)
+ (setq org-state "CANCELLED") ; New state is CANCELLED (also done)
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should-not copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-ignores-todo-state ()
+ "The hook should not copy when transitioning TO TODO state (non-done)."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED")) ; TODO is not in done keywords
+ (setq org-state "TODO") ; Transitioning TO TODO
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should-not copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+(ert-deftest test-org-roam-hook-ignores-in-progress-state ()
+ "The hook should not copy when transitioning TO IN-PROGRESS state (non-done)."
+ (test-org-roam-todo-hook-setup)
+ (unwind-protect
+ (let ((copy-function-called nil))
+ (require 'org)
+ (require 'org-roam-config)
+ (setq org-done-keywords '("DONE" "CANCELLED")) ; IN-PROGRESS is not in done keywords
+ (setq org-state "IN-PROGRESS") ; Transitioning TO IN-PROGRESS
+ (cl-letf (((symbol-function 'cj/org-roam-copy-todo-to-today)
+ (lambda () (setq copy-function-called t))))
+ (run-hooks 'org-after-todo-state-change-hook)
+ (should-not copy-function-called)))
+ (test-org-roam-todo-hook-teardown)))
+
+(provide 'test-org-roam-config-copy-todo-to-today)
+;;; test-org-roam-config-copy-todo-to-today.el ends here