diff options
Diffstat (limited to 'tests/test-calendar-sync--expand-monthly.el')
| -rw-r--r-- | tests/test-calendar-sync--expand-monthly.el | 146 |
1 files changed, 136 insertions, 10 deletions
diff --git a/tests/test-calendar-sync--expand-monthly.el b/tests/test-calendar-sync--expand-monthly.el index 3dc1f2dc..e9fae901 100644 --- a/tests/test-calendar-sync--expand-monthly.el +++ b/tests/test-calendar-sync--expand-monthly.el @@ -14,9 +14,12 @@ ;;; Normal Cases (ert-deftest test-calendar-sync--expand-monthly-normal-generates-occurrences () - "Test expanding monthly event generates occurrences within range." - (let* ((start-date (test-calendar-sync-time-days-from-now 1 10 0)) - (end-date (test-calendar-sync-time-days-from-now 1 11 0)) + "Test expanding monthly event generates occurrences within range. +Anchored on a day every month has: a series on the 29th, 30th, or 31st +correctly skips the months lacking that day, which is fewer than one per month +and not what this assertion is about." + (let* ((start-date (test-calendar-sync-time-monthly-anchor 10 0)) + (end-date (test-calendar-sync-time-monthly-anchor 11 0)) (base-event (list :summary "Monthly Review" :start start-date :end end-date)) @@ -28,9 +31,13 @@ (should (< (length occurrences) 20)))) (ert-deftest test-calendar-sync--expand-monthly-normal-preserves-day-of-month () - "Test that each occurrence falls on the same day of month." - (let* ((start-date (test-calendar-sync-time-days-from-now 5 10 0)) - (end-date (test-calendar-sync-time-days-from-now 5 11 0)) + "Test that each occurrence falls on the same day of month. +Anchored on a day every month has, so the assertion below can be an equality. +It used to be `<=' against an anchor whose day varied with the run date, which a +skipped month satisfies without ever landing on the right day -- the assertion +held even when the series was wrong." + (let* ((start-date (test-calendar-sync-time-monthly-anchor 10 0)) + (end-date (test-calendar-sync-time-monthly-anchor 11 0)) (expected-day (nth 2 start-date)) (base-event (list :summary "Monthly" :start start-date @@ -39,15 +46,15 @@ (range (test-calendar-sync-wide-range)) (occurrences (calendar-sync--expand-monthly base-event rrule range))) (should (> (length occurrences) 0)) - ;; Day of month should be consistent (may clamp for short months) + ;; Every occurrence lands on the anchor day, exactly. (dolist (occ occurrences) (let ((day (nth 2 (plist-get occ :start)))) - (should (<= day expected-day)))))) + (should (= day expected-day)))))) (ert-deftest test-calendar-sync--expand-monthly-normal-interval-two () "Test expanding bi-monthly event." - (let* ((start-date (test-calendar-sync-time-days-from-now 1 9 0)) - (end-date (test-calendar-sync-time-days-from-now 1 10 0)) + (let* ((start-date (test-calendar-sync-time-monthly-anchor 9 0)) + (end-date (test-calendar-sync-time-monthly-anchor 10 0)) (base-event (list :summary "Bi-Monthly" :start start-date :end end-date)) @@ -170,5 +177,124 @@ (occurrences (calendar-sync--expand-monthly base-event rrule range))) (should (= (length occurrences) 3)))) +;;; BYDAY (nth weekday) Cases +;; +;; Fixed dates are deterministic here: the expansion range is an explicit +;; parameter, not derived from the current time, so these never age out. + +(defun test-calendar-sync--expand-monthly-range-2026 () + "Fixed expansion range covering calendar year 2026." + (list (encode-time 0 0 0 1 1 2026) (encode-time 0 0 0 31 12 2026))) + +(ert-deftest test-calendar-sync--expand-monthly-byday-second-wednesday () + "Normal: BYDAY=2WE lands on the 2nd Wednesday of each month, not the +day-of-month of DTSTART. This is the live Craig/Ryan series shape." + (let* ((base-event (list :summary "2nd Wednesday" + :start '(2026 1 14 10 0) + :end '(2026 1 14 11 0))) + (rrule (list :freq 'monthly :interval 1 :byday '("2WE"))) + (range (test-calendar-sync--expand-monthly-range-2026)) + (occurrences (calendar-sync--expand-monthly base-event rrule range)) + (days (mapcar (lambda (occ) + (let ((s (plist-get occ :start))) + (list (nth 1 s) (nth 2 s)))) + occurrences))) + (should (equal days '((1 14) (2 11) (3 11) (4 8) (5 13) (6 10) + (7 8) (8 12) (9 9) (10 14) (11 11) (12 9)))) + ;; Every occurrence is a Wednesday (weekday 3), never a fixed day-of-month. + (dolist (occ occurrences) + (let ((s (plist-get occ :start))) + (should (= 3 (calendar-sync--date-weekday + (list (nth 0 s) (nth 1 s) (nth 2 s))))))))) + +(ert-deftest test-calendar-sync--expand-monthly-byday-last-tuesday () + "Normal: BYDAY=-1TU lands on the last Tuesday of each month." + (let* ((base-event (list :summary "Last Tuesday" + :start '(2026 1 27 9 0) + :end '(2026 1 27 10 0))) + (rrule (list :freq 'monthly :interval 1 :byday '("-1TU") :count 3)) + (range (test-calendar-sync--expand-monthly-range-2026)) + (occurrences (calendar-sync--expand-monthly base-event rrule range)) + (days (mapcar (lambda (occ) + (let ((s (plist-get occ :start))) + (list (nth 1 s) (nth 2 s)))) + occurrences))) + (should (equal days '((1 27) (2 24) (3 31)))))) + +(ert-deftest test-calendar-sync--expand-monthly-byday-bysetpos-second-sunday () + "Normal: BYDAY=SU with BYSETPOS=2 lands on the 2nd Sunday (Proton shape)." + (let* ((base-event (list :summary "2nd Sunday" + :start '(2026 1 11 8 0) + :end '(2026 1 11 9 0))) + (rrule (list :freq 'monthly :interval 1 :byday '("SU") :bysetpos 2 :count 3)) + (range (test-calendar-sync--expand-monthly-range-2026)) + (occurrences (calendar-sync--expand-monthly base-event rrule range)) + (days (mapcar (lambda (occ) + (let ((s (plist-get occ :start))) + (list (nth 1 s) (nth 2 s)))) + occurrences))) + (should (equal days '((1 11) (2 8) (3 8)))))) + +(ert-deftest test-calendar-sync--expand-monthly-byday-until-inclusive-and-reached () + "Boundary: with BYDAY, UNTIL is inclusive and the series reaches it. +Upper bound alone can't catch a dropped final occurrence -- assert both." + (let* ((base-event (list :summary "Bounded" + :start '(2026 1 14 10 0) + :end '(2026 1 14 11 0))) + (rrule (list :freq 'monthly :interval 1 :byday '("2WE") + :until '(2026 5 13))) + (range (test-calendar-sync--expand-monthly-range-2026)) + (occurrences (calendar-sync--expand-monthly base-event rrule range)) + (last-start (plist-get (car (last occurrences)) :start))) + (should (= (length occurrences) 5)) + ;; Reach: the occurrence landing exactly on UNTIL is kept. + (should (equal (list (nth 0 last-start) (nth 1 last-start) (nth 2 last-start)) + '(2026 5 13))))) + +(ert-deftest test-calendar-sync--expand-monthly-byday-count-limits () + "Boundary: COUNT caps a BYDAY series." + (let* ((base-event (list :summary "Counted" + :start '(2026 1 14 10 0) + :end '(2026 1 14 11 0))) + (rrule (list :freq 'monthly :interval 1 :byday '("2WE") :count 4)) + (range (test-calendar-sync--expand-monthly-range-2026)) + (occurrences (calendar-sync--expand-monthly base-event rrule range))) + (should (= (length occurrences) 4)))) + +(ert-deftest test-calendar-sync--expand-monthly-byday-fifth-weekday-skips-short-months () + "Boundary: BYDAY=5WE only lands in months that have a 5th Wednesday." + (let* ((base-event (list :summary "5th Wednesday" + :start '(2026 4 29 10 0) + :end '(2026 4 29 11 0))) + (rrule (list :freq 'monthly :interval 1 :byday '("5WE"))) + (range (test-calendar-sync--expand-monthly-range-2026)) + (occurrences (calendar-sync--expand-monthly base-event rrule range)) + (days (mapcar (lambda (occ) + (let ((s (plist-get occ :start))) + (list (nth 1 s) (nth 2 s)))) + occurrences))) + ;; 2026 months (Apr on) with a 5th Wednesday: Apr 29, Jul 29, Sep 30, Dec 30. + (should (equal days '((4 29) (7 29) (9 30) (12 30)))))) + +(ert-deftest test-calendar-sync--expand-monthly-on-31st-skips-short-months () + "Boundary: a plain monthly rule on the 31st skips months without a 31st. +The stepper kept day-of-month verbatim, so Jan 31 stepped to Feb 31, +which encode-time normalizes to Mar 3 -- phantom mis-dated occurrences +instead of the RFC 5545 skip." + (let* ((base-event (list :summary "Monthly on the 31st" + :start '(2030 1 31 10 0) + :end '(2030 1 31 11 0))) + (rrule (list :freq 'monthly :interval 1)) + ;; End the range past Dec 31: the range end is midnight, so ending + ;; ON the 31st would exclude that day's 10:00 occurrence. + (range (list (calendar-sync--date-to-time '(2030 1 1)) + (calendar-sync--date-to-time '(2031 1 1)))) + (occurrences (calendar-sync--expand-monthly base-event rrule range)) + (months (mapcar (lambda (o) (nth 1 (plist-get o :start))) occurrences)) + (days (mapcar (lambda (o) (nth 2 (plist-get o :start))) occurrences))) + ;; Only the seven 31-day months of 2030, each on the 31st. + (should (equal months '(1 3 5 7 8 10 12))) + (should (equal days '(31 31 31 31 31 31 31))))) + (provide 'test-calendar-sync--expand-monthly) ;;; test-calendar-sync--expand-monthly.el ends here |