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;;; test-org-reveal-config-commands.el --- Tests for org-reveal-config command wrappers -*- lexical-binding: t; -*-
;;; Commentary:
;; Sibling tests cover the header template, title-to-filename slug,
;; and the headers-remove pass. This file fills in the command
;; wrappers and a couple of small helpers:
;;
;; cj/--reveal-preview-export-on-save
;; cj/--reveal-ensure-header
;; cj/reveal-export
;; cj/reveal-preview-start
;; cj/reveal-preview-stop
;; cj/reveal-present
;; cj/reveal-insert-header
;; cj/reveal-remove-headers
;; cj/reveal-new
;;
;; ox-reveal and browse-url are stubbed.
;;; Code:
(require 'ert)
(require 'cl-lib)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(require 'org-reveal-config)
;;; cj/--reveal-preview-export-on-save
(ert-deftest test-reveal-preview-export-on-save-in-org-mode-exports ()
"Normal: in org-mode the helper calls `org-reveal-export-to-html'."
(let ((called nil))
(with-temp-buffer
(delay-mode-hooks (org-mode))
(cl-letf (((symbol-function 'org-reveal-export-to-html)
(lambda (&rest _) (setq called t) "/tmp/out.html")))
(cj/--reveal-preview-export-on-save)))
(should called)))
(ert-deftest test-reveal-preview-export-on-save-non-org-buffer-skips ()
"Boundary: outside org-mode the helper doesn't call the exporter."
(let ((called nil))
(with-temp-buffer
(cl-letf (((symbol-function 'org-reveal-export-to-html)
(lambda (&rest _) (setq called t) "/tmp/out.html")))
(cj/--reveal-preview-export-on-save)))
(should-not called)))
;;; cj/--reveal-ensure-header
(ert-deftest test-reveal-ensure-header-inserts-when-absent ()
"Normal: with no reveal headers yet, the template is inserted at point-min."
(with-temp-buffer
(insert "* Slide 1\n")
(cl-letf (((symbol-function 'read-from-minibuffer)
(lambda (&rest _) "My Talk")))
(cj/--reveal-ensure-header))
(should (string-match-p "^#\\+REVEAL" (buffer-string)))))
(ert-deftest test-reveal-ensure-header-no-op-when-already-present ()
"Boundary: when headers already present, no prompt + no re-insert."
(with-temp-buffer
(insert "#+REVEAL_THEME: black\n\n* Slide 1\n")
(let ((prompted nil))
(cl-letf (((symbol-function 'read-from-minibuffer)
(lambda (&rest _) (setq prompted t) "ignored")))
(cj/--reveal-ensure-header))
(should-not prompted))))
;;; cj/reveal-export
(ert-deftest test-reveal-export-error-when-not-org-mode ()
"Error: outside org-mode the command signals user-error."
(with-temp-buffer
(should-error (cj/reveal-export) :type 'user-error)))
(ert-deftest test-reveal-export-opens-html-in-browser ()
"Normal: in org-mode the exporter is called and the HTML opens in browser."
(let ((opened nil)
(msg nil))
(with-temp-buffer
(delay-mode-hooks (org-mode))
(cl-letf (((symbol-function 'file-directory-p) (lambda (_) t))
((symbol-function 'org-reveal-export-to-html)
(lambda (&rest _) "/tmp/talk.html"))
((symbol-function 'browse-url-of-file)
(lambda (f) (setq opened f)))
((symbol-function 'message)
(lambda (fmt &rest args)
(setq msg (apply #'format fmt args)))))
(cj/reveal-export)))
(should (equal opened "/tmp/talk.html"))
(should (string-match-p "Opened presentation" msg))))
(ert-deftest test-reveal-export-errors-when-reveal-root-missing ()
"Error: when the local reveal.js dir is absent, export signals user-error."
(with-temp-buffer
(delay-mode-hooks (org-mode))
(cl-letf (((symbol-function 'file-directory-p) (lambda (_) nil))
((symbol-function 'org-reveal-export-to-html)
(lambda (&rest _) (error "Exporter should not be reached"))))
(let ((err (should-error (cj/reveal-export) :type 'user-error)))
(should (string-match-p "reveal\\.js" (error-message-string err)))
(should (string-match-p "setup-reveal\\.sh"
(error-message-string err)))))))
;;; cj/reveal-preview-start
(ert-deftest test-reveal-preview-start-installs-hook-and-exports ()
"Normal: preview-start adds the buffer-local hook and exports once."
(let ((exported nil)
(opened nil))
(with-temp-buffer
(delay-mode-hooks (org-mode))
(cl-letf (((symbol-function 'file-directory-p) (lambda (_) t))
((symbol-function 'org-reveal-export-to-html)
(lambda (&rest _) (setq exported t) "/tmp/preview.html"))
((symbol-function 'browse-url-of-file)
(lambda (f) (setq opened f)))
((symbol-function 'message) #'ignore))
(cj/reveal-preview-start))
(should exported)
(should (equal opened "/tmp/preview.html"))
(should (memq #'cj/--reveal-preview-export-on-save
after-save-hook)))))
(ert-deftest test-reveal-preview-start-errors-outside-org-mode ()
"Error: outside org-mode preview-start signals user-error."
(with-temp-buffer
(should-error (cj/reveal-preview-start) :type 'user-error)))
;;; cj/reveal-preview-stop
(ert-deftest test-reveal-preview-stop-removes-hook-and-messages ()
"Normal: preview-stop removes the buffer-local hook + messages."
(let ((msg nil))
(with-temp-buffer
(add-hook 'after-save-hook #'cj/--reveal-preview-export-on-save nil t)
(cl-letf (((symbol-function 'message)
(lambda (fmt &rest args)
(setq msg (apply #'format fmt args)))))
(cj/reveal-preview-stop))
(should-not (memq #'cj/--reveal-preview-export-on-save
after-save-hook)))
(should (string-match-p "stopped" msg))))
;;; cj/reveal-insert-header
(ert-deftest test-reveal-insert-header-errors-outside-org-mode ()
"Error: insert-header outside org-mode signals user-error."
(with-temp-buffer
(should-error (cj/reveal-insert-header) :type 'user-error)))
(ert-deftest test-reveal-insert-header-errors-when-already-present ()
"Error: insert-header when headers already present signals user-error."
(with-temp-buffer
(delay-mode-hooks (org-mode))
(insert "#+REVEAL_THEME: black\n")
(should-error (cj/reveal-insert-header) :type 'user-error)))
(ert-deftest test-reveal-insert-header-normal-inserts-and-messages ()
"Normal: with no headers, insert-header adds them and reports."
(let ((msg nil))
(with-temp-buffer
(delay-mode-hooks (org-mode))
(insert "* Slide 1\n")
(cl-letf (((symbol-function 'read-from-minibuffer)
(lambda (&rest _) "A Talk"))
((symbol-function 'message)
(lambda (fmt &rest args)
(setq msg (apply #'format fmt args)))))
(cj/reveal-insert-header))
(should (string-match-p "^#\\+REVEAL" (buffer-string))))
(should (string-match-p "Inserted" msg))))
;;; cj/reveal-remove-headers
(ert-deftest test-reveal-remove-headers-errors-outside-org-mode ()
"Error: remove-headers outside org-mode signals user-error."
(with-temp-buffer
(should-error (cj/reveal-remove-headers) :type 'user-error)))
(ert-deftest test-reveal-remove-headers-normal-messages-count ()
"Normal: remove-headers reports how many lines were removed."
(let ((msg nil))
(with-temp-buffer
(delay-mode-hooks (org-mode))
(insert "#+REVEAL_THEME: black\n"
"#+OPTIONS: reveal_title_slide:nil\n\n"
"* Slide 1\n")
(cl-letf (((symbol-function 'message)
(lambda (fmt &rest args)
(setq msg (apply #'format fmt args)))))
(cj/reveal-remove-headers)))
(should (string-match-p "^Removed [0-9]+ reveal" msg))))
;;; cj/reveal-new
(ert-deftest test-reveal-new-errors-when-file-exists ()
"Error: trying to create a file that already exists signals user-error."
(let ((tmp (make-temp-file "test-reveal-" nil ".org")))
(unwind-protect
(cl-letf (((symbol-function 'read-from-minibuffer)
(lambda (&rest _) "Reused Title"))
((symbol-function 'read-file-name)
(lambda (&rest _) tmp)))
(should-error (cj/reveal-new) :type 'user-error))
(delete-file tmp))))
(provide 'test-org-reveal-config-commands)
;;; test-org-reveal-config-commands.el ends here
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