import { describe, expect, it } from 'vitest'; import { applyRangeToRows, isPastPeriod, serializeRows, subtractRange, toMinStayRows, type MinStayRow } from './min-stay-range-utils'; const row = (from: string, to: string, minStay: number): MinStayRow => ({ key: `k-${from}`, date_from: from, date_to: to, min_stay: minStay }); /** Every day covered by a table, with the value that applies to it. */ const dayMap = (rows: MinStayRow[]): Record => { const map: Record = {}; for (const r of rows) { for (let d = new Date(`${r.date_from}T00:00:00Z`); d <= new Date(`${r.date_to}T00:00:00Z`); d.setUTCDate(d.getUTCDate() + 1)) { const key = d.toISOString().slice(0, 10); map[key] = [...(map[key] ?? []), r.min_stay]; } } return map; }; describe('subtractRange', () => { it('leaves a disjoint period untouched', () => { expect(subtractRange(row('2026-08-01', '2026-08-10', 3), '2026-09-01', '2026-09-10')).toEqual([ expect.objectContaining({ date_from: '2026-08-01', date_to: '2026-08-10' }), ]); }); it('treats a shared boundary day as an overlap, not adjacency', () => { // Bounds are inclusive: 08-10 belongs to both, so the period must yield it. const fragments = subtractRange(row('2026-08-01', '2026-08-10', 3), '2026-08-10', '2026-08-20'); expect(fragments).toHaveLength(1); expect(fragments[0].date_to).toBe('2026-08-09'); }); it('clips the left side', () => { const fragments = subtractRange(row('2026-08-01', '2026-08-31', 3), '2026-07-15', '2026-08-10'); expect(fragments).toHaveLength(1); expect(fragments[0]).toMatchObject({ date_from: '2026-08-11', date_to: '2026-08-31' }); }); it('splits a period covered in its middle into two fragments', () => { const fragments = subtractRange(row('2026-08-01', '2026-08-31', 3), '2026-08-10', '2026-08-20'); expect(fragments).toHaveLength(2); expect(fragments[0]).toMatchObject({ date_from: '2026-08-01', date_to: '2026-08-09', min_stay: 3 }); expect(fragments[1]).toMatchObject({ date_from: '2026-08-21', date_to: '2026-08-31', min_stay: 3 }); }); it('drops a period entirely swallowed by the range', () => { expect(subtractRange(row('2026-08-05', '2026-08-09', 3), '2026-08-01', '2026-08-31')).toEqual([]); }); it('gives the fragments distinct keys so React never reuses a row', () => { const [left, right] = subtractRange(row('2026-08-01', '2026-08-31', 3), '2026-08-10', '2026-08-20'); expect(left.key).not.toBe(right.key); }); }); describe('applyRangeToRows', () => { it('never leaves two different values on the same day', () => { // C'est l'invariant que la validation serveur exige : sans le rognage, // ce cas partirait en « périodes en conflit » au moment d'enregistrer. const result = applyRangeToRows([row('2026-08-01', '2026-08-31', 3)], '2026-08-10', '2026-08-20', 7); for (const values of Object.values(dayMap(result))) { expect(new Set(values).size).toBe(1); } }); it('keeps the untouched days on their original value', () => { const map = dayMap(applyRangeToRows([row('2026-08-01', '2026-08-31', 3)], '2026-08-10', '2026-08-20', 7)); expect(map['2026-08-09']).toEqual([3]); expect(map['2026-08-10']).toEqual([7]); expect(map['2026-08-20']).toEqual([7]); expect(map['2026-08-21']).toEqual([3]); }); it('applies across several periods at once', () => { const result = applyRangeToRows( [row('2026-08-01', '2026-08-10', 2), row('2026-08-15', '2026-08-25', 4), row('2026-09-01', '2026-09-10', 6)], '2026-08-05', '2026-08-20', 9, ); const map = dayMap(result); expect(map['2026-08-04']).toEqual([2]); expect(map['2026-08-05']).toEqual([9]); // 08-12 était un trou entre deux périodes : la plage appliquée le couvre // comme n'importe quel autre jour de [from, to]. C'est voulu — l'action // « appliquer à une plage » porte sur la plage entière, pas seulement // sur les jours déjà restreints. expect(map['2026-08-12']).toEqual([9]); expect(map['2026-08-20']).toEqual([9]); expect(map['2026-08-21']).toEqual([4]); expect(map['2026-09-05']).toEqual([6]); // Le trou qui n'est PAS dans la plage appliquée reste un trou. expect(map['2026-08-28']).toBeUndefined(); }); it('adding a single day inside an existing period carves it instead of stacking', () => { // Le bouton « Ajouter une période » pose aujourd'hui..aujourd'hui : sans // rognage, le jour porterait deux valeurs et le serveur rejetterait tout. const result = applyRangeToRows([row('2026-08-01', '2026-08-31', 5)], '2026-08-15', '2026-08-15', 2); expect(dayMap(result)['2026-08-15']).toEqual([2]); expect(result).toHaveLength(3); }); it('returns rows sorted by start date', () => { const result = applyRangeToRows([row('2026-09-01', '2026-09-10', 2)], '2026-08-01', '2026-08-10', 4); expect(result.map((r) => r.date_from)).toEqual(['2026-08-01', '2026-09-01']); }); }); describe('toMinStayRows / serializeRows', () => { it('sorts and coerces the server payload', () => { const rows = toMinStayRows([ { date_from: '2026-09-01', date_to: '2026-09-10', min_stay: 4 }, { date_from: '2026-08-01', date_to: '2026-08-10', min_stay: '3' as unknown as number }, ]); expect(rows.map((r) => r.date_from)).toEqual(['2026-08-01', '2026-09-01']); expect(rows[0].min_stay).toBe(3); }); it('falls back to one night on an unusable value', () => { // Une valeur 0/NaN venue de RU ne doit pas se propager : la spec impose > 0. expect(toMinStayRows([{ date_from: '2026-08-01', date_to: '2026-08-02', min_stay: 0 }])[0].min_stay).toBe(1); }); it('fingerprints content only, ignoring row keys', () => { const a: MinStayRow = { key: 'a', date_from: '2026-08-01', date_to: '2026-08-10', min_stay: 3 }; const b: MinStayRow = { key: 'b', date_from: '2026-08-01', date_to: '2026-08-10', min_stay: 3 }; expect(serializeRows([a])).toBe(serializeRows([b])); }); }); describe('isPastPeriod', () => { it('is past only once the period has fully elapsed', () => { const today = '2026-08-03'; expect(isPastPeriod({ date_from: '2026-07-01', date_to: '2026-08-02', min_stay: 3 }, today)).toBe(true); expect(isPastPeriod({ date_from: '2026-07-01', date_to: '2026-08-03', min_stay: 3 }, today)).toBe(false); expect(isPastPeriod({ date_from: '2026-07-01', date_to: '2026-09-01', min_stay: 3 }, today)).toBe(false); }); });