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vu/tests/calendar/christ-the-king.test.ts
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calendar: add Christ the King, last Sunday of October
A 1925 addition, so nowhere in the Monastic Tridentinum 1617 base this
project otherwise targets -- content sourced from "Monastic Divino
1930" instead, the Monastic-lineage version of the era that actually
carries it. Always wins outright (Duplex I. classis, confirmed live),
commemorating whichever Sunday after Pentecost it displaces -- same
additive-layering shape as applyOctaves/applyMarianSaturday, run last
so nested commemorations (e.g. a Simplex saint already commemorated
under that Sunday) survive underneath it.

Extended the Lauds psalmody-override mechanism (both the psalm groups
and, newly, the chapter/responsory/hymn/versicle bundle) to recognize
named temporal winners as unconditionally override-eligible, not just
duplex-majus+ sanctoral ones -- generalizing what had been a Marian-
Saturday-only special case. Suffrages needed their own explicit check
too: isDoubleOrHigher only ever looks at a sanctoral rank, and a named
temporal winner has no FeastClass to check at all.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-11 14:13:22 -04:00

40 lines
1.9 KiB
TypeScript

import { describe, expect, it } from 'vitest';
import { resolveDay } from '../../src/calendar';
import { getDayLabel } from '../../src/calendar/day-label';
// A 1925 addition, not in the Monastic Tridentinum 1617 base this project
// otherwise targets -- content sourced from "Monastic Divino 1930"
// instead. Always wins the last Sunday of October, commemorating
// whichever Sunday after Pentecost it displaces.
describe('Christ the King (applyChristTheKing)', () => {
it('wins outright on the last Sunday of October, commemorating the Sunday it displaces', () => {
const day = resolveDay('2026-10-25'); // last Sunday of October 2026
expect(day.winner).toEqual({ kind: 'temporal', id: 'christ-the-king' });
expect(day.commemorations).toContainEqual({ kind: 'temporal', id: 'post-pentecost-22' });
expect(getDayLabel(day)).toBe('Christ the King');
});
it('preserves a nested commemoration: a Simplex saint already commemorated under the ordinary Sunday stays commemorated', () => {
// Ss. Chrysanthus and Daria, Simplex, land on 2026-10-25 -- already
// commemorated under the Sunday per the ordinary-sunday rule before
// Christ the King further displaces that Sunday itself.
const day = resolveDay('2026-10-25');
expect(day.commemorations).toContainEqual({
kind: 'sanctoral',
id: 'ss-chrysanthus-and-daria',
name: 'Ss. Chrysanthus and Daria, Martyrs',
rank: 'simplex',
});
});
it('does not apply on any other Sunday in October', () => {
const day = resolveDay('2026-10-18');
expect(day.winner).not.toEqual({ kind: 'temporal', id: 'christ-the-king' });
});
it('correctly finds a different last Sunday of October in a year where Oct 31 itself is a Sunday', () => {
const day = resolveDay('2027-10-31'); // 2027-10-31 is a Sunday
expect(day.winner).toEqual({ kind: 'temporal', id: 'christ-the-king' });
});
});