128 lines
4.2 KiB
TypeScript
128 lines
4.2 KiB
TypeScript
import { describe, expect, it } from 'vitest';
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import {
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defaultShanghaiRange,
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eachShanghaiBuckets,
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periodMomRatio,
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previousShanghaiRangeByGrain,
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shanghaiBucketKey,
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shanghaiQuarterIndex,
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shanghaiQuarterRange,
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} from './dashboard-period';
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import { shanghaiYmd } from './shanghai-date';
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describe('shanghaiBucketKey', () => {
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it('周跨年落到周一 2025-12-29', () => {
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expect(shanghaiBucketKey(new Date('2026-01-02T04:00:00+08:00'), 'week')).toBe('2025-12-29');
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});
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it('Q4 → Q1 分属两年', () => {
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expect(shanghaiBucketKey(new Date('2025-12-15T00:00:00+08:00'), 'quarter')).toBe('2025-Q4');
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expect(shanghaiBucketKey(new Date('2026-01-02T00:00:00+08:00'), 'quarter')).toBe('2026-Q1');
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});
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});
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describe('eachShanghaiBuckets', () => {
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it('周跨年包含 2025-12-29 与 2026-01-05', () => {
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const keys = eachShanghaiBuckets(
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new Date('2025-12-31T00:00:00+08:00'),
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new Date('2026-01-06T00:00:00+08:00'),
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'week',
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).map((b) => b.key);
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expect(keys).toEqual(['2025-12-29', '2026-01-05']);
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});
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it('季从 Q4 跨到 Q1', () => {
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const keys = eachShanghaiBuckets(
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new Date('2025-11-01T00:00:00+08:00'),
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new Date('2026-02-01T00:00:00+08:00'),
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'quarter',
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).map((b) => b.key);
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expect(keys).toEqual(['2025-Q4', '2026-Q1']);
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});
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});
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describe('previousShanghaiRangeByGrain', () => {
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it('日：昨天~今天 的环比是 前天~昨天', () => {
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const prev = previousShanghaiRangeByGrain(
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new Date('2026-09-01T00:00:00+08:00'),
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new Date('2026-09-02T00:00:00+08:00'),
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'day',
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);
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expect(shanghaiYmd(prev.from)).toBe('2026-08-31');
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expect(shanghaiYmd(prev.to)).toBe('2026-09-01');
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});
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it('周：整段回退 7 天', () => {
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const prev = previousShanghaiRangeByGrain(
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new Date('2026-08-24T00:00:00+08:00'),
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new Date('2026-09-02T00:00:00+08:00'),
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'week',
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);
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expect(shanghaiYmd(prev.from)).toBe('2026-08-17');
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expect(shanghaiYmd(prev.to)).toBe('2026-08-26');
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});
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it('月：整段回退 1 个月', () => {
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const prev = previousShanghaiRangeByGrain(
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new Date('2026-08-01T00:00:00+08:00'),
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new Date('2026-09-02T00:00:00+08:00'),
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'month',
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);
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expect(shanghaiYmd(prev.from)).toBe('2026-07-01');
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expect(shanghaiYmd(prev.to)).toBe('2026-08-02');
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});
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});
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describe('periodMomRatio', () => {
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it('上期为 0：本期 0 为 null，本期 > 0 为 1', () => {
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expect(periodMomRatio(0, 0)).toBeNull();
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expect(periodMomRatio(8, 0)).toBe(1);
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});
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it('常规环比', () => {
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expect(periodMomRatio(12, 10)).toBeCloseTo(0.2);
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expect(periodMomRatio(8, 10)).toBeCloseTo(-0.2);
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});
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});
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describe('shanghaiQuarterRange', () => {
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it('Q1 为 1/1～4/1（不含）', () => {
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const { start, endExclusive } = shanghaiQuarterRange(2026, 1);
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expect(shanghaiYmd(start)).toBe('2026-01-01');
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expect(shanghaiYmd(endExclusive)).toBe('2026-04-01');
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expect(shanghaiQuarterIndex(start)).toEqual({ year: 2026, quarter: 1 });
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});
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});
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describe('defaultShanghaiRange', () => {
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it('日：昨天～今天', () => {
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const r = defaultShanghaiRange('day', new Date('2026-09-02T12:00:00+08:00'));
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expect(shanghaiYmd(r.from)).toBe('2026-09-01');
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expect(shanghaiYmd(r.to)).toBe('2026-09-02');
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});
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it('周：上周一～今天', () => {
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const r = defaultShanghaiRange('week', new Date('2026-09-02T12:00:00+08:00'));
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expect(shanghaiYmd(r.from)).toBe('2026-08-24');
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expect(shanghaiYmd(r.to)).toBe('2026-09-02');
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});
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it('月：上月1日～今天', () => {
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const r = defaultShanghaiRange('month', new Date('2026-09-02T12:00:00+08:00'));
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expect(shanghaiYmd(r.from)).toBe('2026-08-01');
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expect(shanghaiYmd(r.to)).toBe('2026-09-02');
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});
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it('季：上季首日～今天', () => {
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const r = defaultShanghaiRange('quarter', new Date('2026-09-02T12:00:00+08:00'));
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expect(shanghaiYmd(r.from)).toBe('2026-04-01');
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expect(shanghaiYmd(r.to)).toBe('2026-09-02');
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});
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it('年：去年1月1日～今天', () => {
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const r = defaultShanghaiRange('year', new Date('2026-09-02T12:00:00+08:00'));
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expect(shanghaiYmd(r.from)).toBe('2025-01-01');
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expect(shanghaiYmd(r.to)).toBe('2026-09-02');
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});
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});
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