test: add 38 tests for org-agenda-config and org-refile-config

- testutil-org.el: shared dynamic timestamp helpers (days-ago, days-ahead, today)
- org-agenda-config: 31 tests across 2 files (skip functions + add-files)
- org-refile-config: 7 tests for ensure-org-mode validation
- Remove prog-shell from checklist (fully covered by existing 9 tests)

1 files changed, 123 insertions, 0 deletions

diff --git a/tests/test-org-refile-config-ensure-org-mode.el b/tests/test-org-refile-config-ensure-org-mode.el
new file mode 100644
index 00000000..c86ad269
--- /dev/null
+++ b/tests/test-org-refile-config-ensure-org-mode.el
@@ -0,0 +1,123 @@
+;;; test-org-refile-config-ensure-org-mode.el --- Tests for cj/org-refile-ensure-org-mode -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Tests for cj/org-refile-ensure-org-mode from org-refile-config.el.
+;; Uses testutil-general.el for filesystem setup/teardown.
+
+;;; Code:
+
+(require 'ert)
+(require 'org)
+
+(add-to-list 'load-path (expand-file-name "tests" user-emacs-directory))
+(require 'testutil-general)
+
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'org-refile-config)
+
+;;; Normal Cases
+
+(ert-deftest test-org-refile-ensure-org-mode-normal-org-file-returns-buffer ()
+  "A .org file already in org-mode should return its buffer."
+  (unwind-protect
+      (progn
+        (cj/create-test-base-dir)
+        (let ((file (cj/create-directory-or-file-ensuring-parents
+                     "refile-test/notes.org" "* Heading\n")))
+          (let ((buf (find-file-noselect file)))
+            (unwind-protect
+                (progn
+                  (with-current-buffer buf
+                    (let ((org-mode-hook nil) (text-mode-hook nil))
+                      (org-mode)))
+                  (let ((result (cj/org-refile-ensure-org-mode file)))
+                    (should (bufferp result))
+                    (with-current-buffer result
+                      (should (derived-mode-p 'org-mode)))))
+              (kill-buffer buf)))))
+    (cj/delete-test-base-dir)))
+
+(ert-deftest test-org-refile-ensure-org-mode-normal-switches-fundamental-to-org ()
+  "A .org file in fundamental-mode should be switched to org-mode."
+  (unwind-protect
+      (progn
+        (cj/create-test-base-dir)
+        (let ((file (cj/create-directory-or-file-ensuring-parents
+                     "refile-test/stuck.org" "* TODO Task\n")))
+          (let ((buf (find-file-noselect file)))
+            (unwind-protect
+                (progn
+                  (with-current-buffer buf
+                    (fundamental-mode))
+                  (should (with-current-buffer buf
+                            (eq major-mode 'fundamental-mode)))
+                  (let ((org-mode-hook nil) (text-mode-hook nil))
+                    (cj/org-refile-ensure-org-mode file))
+                  (with-current-buffer buf
+                    (should (derived-mode-p 'org-mode))))
+              (kill-buffer buf)))))
+    (cj/delete-test-base-dir)))
+
+;;; Error Cases
+
+(ert-deftest test-org-refile-ensure-org-mode-error-non-org-extension ()
+  "A non-.org file should signal an error."
+  (unwind-protect
+      (progn
+        (cj/create-test-base-dir)
+        (let ((file (cj/create-directory-or-file-ensuring-parents
+                     "refile-test/notes.txt" "Some text\n")))
+          (should-error (cj/org-refile-ensure-org-mode file)
+                        :type 'error)))
+    (cj/delete-test-base-dir)))
+
+(ert-deftest test-org-refile-ensure-org-mode-error-markdown-extension ()
+  "A .md file should signal an error."
+  (unwind-protect
+      (progn
+        (cj/create-test-base-dir)
+        (let ((file (cj/create-directory-or-file-ensuring-parents
+                     "refile-test/notes.md" "# Heading\n")))
+          (should-error (cj/org-refile-ensure-org-mode file)
+                        :type 'error)))
+    (cj/delete-test-base-dir)))
+
+(ert-deftest test-org-refile-ensure-org-mode-error-no-extension ()
+  "A file without an extension should signal an error."
+  (unwind-protect
+      (progn
+        (cj/create-test-base-dir)
+        (let ((file (cj/create-directory-or-file-ensuring-parents
+                     "refile-test/notes" "content\n")))
+          (should-error (cj/org-refile-ensure-org-mode file)
+                        :type 'error)))
+    (cj/delete-test-base-dir)))
+
+;;; Boundary Cases
+
+(ert-deftest test-org-refile-ensure-org-mode-boundary-org-in-dirname ()
+  "A file with .org in the directory name but not the extension should error."
+  (unwind-protect
+      (progn
+        (cj/create-test-base-dir)
+        (let ((file (cj/create-directory-or-file-ensuring-parents
+                     "refile-test/my.org.files/todo.txt" "* TODO\n")))
+          (should-error (cj/org-refile-ensure-org-mode file)
+                        :type 'error)))
+    (cj/delete-test-base-dir)))
+
+(ert-deftest test-org-refile-ensure-org-mode-boundary-uppercase-org-extension ()
+  "A .ORG file (uppercase) should be accepted (case-insensitive match)."
+  (unwind-protect
+      (progn
+        (cj/create-test-base-dir)
+        (let ((file (cj/create-directory-or-file-ensuring-parents
+                     "refile-test/notes.ORG" "* Heading\n")))
+          (let ((buf (cj/org-refile-ensure-org-mode file)))
+            (unwind-protect
+                (should (bufferp buf))
+              (when (buffer-live-p buf) (kill-buffer buf))))))
+    (cj/delete-test-base-dir)))
+
+(provide 'test-org-refile-config-ensure-org-mode)
+;;; test-org-refile-config-ensure-org-mode.el ends here