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Corrects and completes the occurrence rules, based on a design discussion plus one concrete data point: St. Anthony Abbot (plain Duplex) was found outright winning against an ordinary Sunday in the real Monastic 1617 engine, which the old duplex-1-classis-only threshold got wrong. - FeastClass gains `vigil`, inserted between `simplex` and `semiduplex` — one ordering that correctly serves both "does this win against a Sunday" (vigil behaves like simplex there) and "which of two saints wins a landing-day collision" (vigil beats simplex, loses to semiduplex). - LiturgicalDay.occurring (a flat OccurringFeast[] that could only ever express a losing *sanctoral* candidate) is replaced by `winner: DayWinner` + `commemorations: Commemoration[]` — a discriminated list that can hold the temporal day itself, one or more sanctoral entries, or (not built yet, but the shape already accommodates it) a future octave kind. - commemorations.ts: ordinary Sundays let Duplex+ win outright (Sunday commemorated in return), Semiduplex/Vigil transfer elsewhere (too substantial a feast to cheapen with a bare commemoration), Simplex stays and is commemorated. Privileged Sundays never displace; Duplex-majus+ commemorated, everything else transfers. - collision.ts (new): resolves two sanctoral candidates wanting the same day (a transfer landing on an already-occupied day, or two native saints sharing a date) — duplex > semiduplex > vigil > simplex, loser always commemorated, ties favor the native occupant. - temporal-id.ts (new): maps any date to one of the 52 real Sunday-collect ids from the previous commit, so a temporal winner/commemoration can actually be looked up, not just labeled "temporal" in the abstract. - index.ts's resolveDay orchestrates all of it, including the actual Monday/Saturday transfer mechanism. Landing on a privileged feria (the concrete case: Holy Week, right after Palm Sunday) is explicitly deferred rather than guessed at — it needs its own Easter-keyed lookup table, the same way the reference engine handles it. Added the Vigil of St. Lawrence (Aug 9) as real content specifically to exercise the backward-transfer rule end-to-end: Aug 9, 2026 is a Sunday, so the vigil transfers cleanly back to Saturday, verified by a new integration test alongside the unit-level rule and collision tests.
65 lines
2.6 KiB
TypeScript
65 lines
2.6 KiB
TypeScript
import { describe, expect, it } from 'vitest';
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import { resolveDay } from '../../src/calendar';
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import { getDayLabel } from '../../src/calendar/day-label';
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import type { LiturgicalDay } from '../../src/calendar/types';
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describe('getDayLabel — ordinal temporal label', () => {
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it("labels an anchor's own partial week as \"Weekday after {Anchor}\"", () => {
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// Trinity Sunday 2026 is May 31.
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expect(getDayLabel(resolveDay('2026-06-01'))).toBe('Monday after Trinity Sunday');
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expect(getDayLabel(resolveDay('2026-01-07'))).toBe('Wednesday after Epiphany'); // Epiphany 2026 is a Tuesday
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});
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it('names the anchor day itself, not "day after itself"', () => {
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expect(getDayLabel(resolveDay('2026-05-31'))).toBe('Trinity Sunday');
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expect(getDayLabel(resolveDay('2026-04-05'))).toBe('Easter');
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expect(getDayLabel(resolveDay('2026-02-18'))).toBe('Ash Wednesday');
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});
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it('gives the correct week-after-Trinity ordinal', () => {
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// Trinity Sunday 2026 is May 31; Jul 6 falls 5 full weeks after the
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// first Sunday-after-Trinity (Jun 7).
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expect(getDayLabel(resolveDay('2026-07-06'))).toBe('Monday in the 5th week after Trinity');
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});
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it("Advent's own anchor Sunday is already week 1, not a separate anchor-week case", () => {
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expect(getDayLabel(resolveDay('2025-11-30'))).toBe('The 1st Sunday of Advent');
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expect(getDayLabel(resolveDay('2025-12-01'))).toBe('Monday in the 1st week of Advent');
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});
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it('falls back to weekday + season name for seasons with no ordinal convention modeled', () => {
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expect(getDayLabel(resolveDay('2026-05-15'))).toContain('in Ascensiontide');
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});
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});
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describe('getDayLabel — feast name combination', () => {
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const base: LiturgicalDay = {
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date: '2026-06-15',
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weekday: 'monday',
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season: 'trinitytide',
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temporalCategory: 'ordinary-feria',
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winner: { kind: 'temporal', id: 'post-pentecost-02' },
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commemorations: [],
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};
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it('shows just the feast name when it wins outright', () => {
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const day: LiturgicalDay = {
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...base,
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winner: { kind: 'sanctoral', id: 'x', name: 'St. Ereden', rank: 'duplex' },
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};
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expect(getDayLabel(day)).toBe('St. Ereden');
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});
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it('shows both, feast first, when the feast is merely commemorated', () => {
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const day: LiturgicalDay = {
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...base,
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commemorations: [{ kind: 'sanctoral', id: 'x', name: 'St. Ereden', rank: 'duplex-2-classis' }],
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};
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expect(getDayLabel(day)).toBe('St. Ereden — Monday in the 2nd week after Trinity');
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});
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it('shows just the temporal label when nothing is commemorated at all', () => {
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expect(getDayLabel(base)).toBe('Monday in the 2nd week after Trinity');
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});
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});
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