Make sure Org mode is turned on after loading the example file

* org-test.el (org-test-in-example-file): Make sure Org mode is turned
on after loading the example file.

testing/org-test.el

@@ -148,6 +148,8 @@ currently executed.")
      (save-window-excursion
        (save-match-data
 	 (find-file my-file)
+	 (unless (org-mode-p)
+	   (org-mode))
 	 (setq to-be-removed (current-buffer))
 	 (goto-char (point-min))
 	 (condition-case nil