48 lines
1.6 KiB
TypeScript
48 lines
1.6 KiB
TypeScript
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import { formatYearRange } from './formatDate';
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describe('formatYearRange', () => {
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describe('Success Paths', () => {
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it('formats a date range within the same year', () => {
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const start = '2024-01-01 12:00:00.000Z';
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const end = '2024-12-31 12:00:00.000Z';
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expect(formatYearRange(start, end)).toBe('2024');
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});
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it('formats a range between different years', () => {
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const start = '2021-05-15 12:00:00.000Z';
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const end = '2024-03-20 12:00:00.000Z';
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expect(formatYearRange(start, end)).toBe('2021 — 2024');
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});
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it('formats a range with null end date as "Present"', () => {
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const start = '2022-08-01 12:00:00.000Z';
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const end = null;
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expect(formatYearRange(start, end)).toBe('2022 — Present');
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});
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});
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describe('Error & Edge Cases', () => {
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it('throws if start date is invalid', () => {
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const start = 'not-a-date';
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const end = '2024-01-01';
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expect(() => formatYearRange(start, end)).toThrow('Invalid start date');
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});
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it('throws if end date is provided but invalid', () => {
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const start = '2024-01-01';
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const end = 'invalid';
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expect(() => formatYearRange(start, end)).toThrow('Invalid end date');
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});
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it('throws if start year is after end year', () => {
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const start = '2024-01-01';
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const end = '2020-01-01';
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expect(() => formatYearRange(start, end)).toThrow('Start year cannot be after end year');
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});
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it('handles empty strings by throwing', () => {
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expect(() => formatYearRange('', null)).toThrow('Invalid start date');
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});
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});
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});
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