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;;; test-calendar-sync--batch-wait.el --- Batch wait-loop tests -*- lexical-binding: t; -*-
;;; Commentary:
;; The sync pipeline is asynchronous end to end: curl runs in one process and
;; the org conversion in a second batch Emacs. Under `emacs --batch' the
;; process exits as soon as the top-level form returns, killing both children
;; mid-flight -- a run that does nothing and reports success.
;;
;; `calendar-sync--batch-wait' is what stops that: it blocks until every
;; calendar has left the `syncing' state, or until the timeout expires. These
;; tests drive it with a stubbed state predicate, so the loop's exit conditions
;; are covered without a live network fetch.
;;; Code:
(require 'ert)
(require 'cl-lib)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(require 'calendar-sync)
(ert-deftest test-calendar-sync-batch-wait-returns-when-nothing-in-flight ()
"Normal: with no calendar syncing the wait returns success immediately."
(let ((polls 0))
(cl-letf (((symbol-function 'calendar-sync--syncing-p) (lambda (_) nil))
((symbol-function 'accept-process-output)
(lambda (&rest _) (setq polls (1+ polls)))))
(should (calendar-sync--batch-wait '("google" "proton") 5))
(should (= polls 0)))))
(ert-deftest test-calendar-sync-batch-wait-blocks-until-settled ()
"Normal: the wait polls while a sync is in flight and returns once it lands."
(let ((remaining 3)
(polls 0))
(cl-letf (((symbol-function 'calendar-sync--syncing-p)
(lambda (_) (> remaining 0)))
((symbol-function 'accept-process-output)
(lambda (&rest _)
(setq polls (1+ polls))
(setq remaining (1- remaining)))))
(should (calendar-sync--batch-wait '("google") 5))
(should (= polls 3)))))
(ert-deftest test-calendar-sync-batch-wait-empty-names-returns-immediately ()
"Boundary: no calendars to wait on settles at once."
(let ((polls 0))
(cl-letf (((symbol-function 'accept-process-output)
(lambda (&rest _) (setq polls (1+ polls)))))
(should (calendar-sync--batch-wait '() 5))
(should (= polls 0)))))
(ert-deftest test-calendar-sync-batch-wait-times-out-when-stuck ()
"Error: a sync that never settles returns nil once the timeout expires.
Returning nil is what lets the runner exit non-zero instead of reporting a
success it cannot vouch for."
(let ((calendar-sync--batch-poll-seconds 0.01))
(cl-letf (((symbol-function 'calendar-sync--syncing-p) (lambda (_) t))
((symbol-function 'accept-process-output) (lambda (&rest _) nil)))
(should-not (calendar-sync--batch-wait '("google") 0.05)))))
(ert-deftest test-calendar-sync-batch-wait-zero-timeout-does-not-hang ()
"Boundary: a zero timeout returns at once rather than looping forever."
(cl-letf (((symbol-function 'calendar-sync--syncing-p) (lambda (_) t))
((symbol-function 'accept-process-output) (lambda (&rest _) nil)))
(should-not (calendar-sync--batch-wait '("google") 0))))
(provide 'test-calendar-sync--batch-wait)
;;; test-calendar-sync--batch-wait.el ends here
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