60 lines
2.1 KiB
TypeScript
60 lines
2.1 KiB
TypeScript
import { BadRequestException } from '@nestjs/common';
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import {
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dateOnlyBounds,
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planIncomePeriod,
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rangeBuckets,
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} from './income-period';
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describe('income period planning', () => {
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afterEach(() => jest.useRealTimers());
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it('uses the Moscow current month and validates strict inclusive ranges', () => {
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jest.useFakeTimers();
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jest.setSystemTime(new Date('2026-01-31T22:30:00.000Z'));
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expect(planIncomePeriod(undefined, undefined)).toMatchObject({
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selected: { from: '2026-02-01', to: '2026-02-01' },
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});
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for (const [from, to] of [
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['2026-02-30', '2026-03-01'],
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['2026-03-02', '2026-03-01'],
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['2026-01-01', '2027-01-02'],
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['2026-01-01', '2026-04-01'],
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])
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expect(() => planIncomePeriod(from, to)).toThrow(BadRequestException);
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});
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it('uses a full previous month, skips impossible year-ago dates, and keeps empty buckets', () => {
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const fullMonth = planIncomePeriod('2026-03-01', '2026-03-31');
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expect(fullMonth.previous).toEqual({
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from: '2026-02-01',
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to: '2026-02-28',
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});
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expect(planIncomePeriod('2024-02-29', '2024-02-29').yearAgo).toBeNull();
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expect(
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rangeBuckets({ from: '2026-01-01', to: '2026-02-15' }, 'week'),
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).toHaveLength(7);
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});
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it('accepts multi-year periods and creates monthly buckets for the entire range', () => {
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jest.useFakeTimers();
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jest.setSystemTime(new Date('2026-09-09T12:00:00Z'));
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const plan = planIncomePeriod('2020-01-01', '2025-12-31');
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expect(plan.selected).toEqual({ from: '2020-01-01', to: '2025-12-31' });
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expect(plan.granularity).toBe('month');
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expect(rangeBuckets(plan.selected, plan.granularity)).toHaveLength(72);
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expect(plan.yearAgo).toEqual({ from: '2019-01-01', to: '2024-12-31' });
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});
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it('does not send the unfinished Moscow day as a future instant', () => {
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jest.useFakeTimers();
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jest.setSystemTime(new Date('2026-08-27T21:44:18.510Z'));
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expect(dateOnlyBounds({ from: '2026-08-01', to: '2026-08-28' })).toEqual({
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from: new Date('2026-07-31T21:00:00.000Z'),
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to: new Date('2026-08-27T21:44:18.510Z'),
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});
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});
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});
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