import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import { parseTimeRange, isTimeExpression } from './time-parser.js';
describe('parseTimeRange', () => {
beforeEach(() => {
// Mock date to 2026-01-07 (Wednesday)
vi.useFakeTimers();
vi.setSystemTime(new Date('2026-01-07T12:00:00Z'));
});
afterEach(() => {
vi.useRealTimers();
});
describe('yesterday', () => {
it('should return yesterday date', () => {
const result = parseTimeRange('yesterday');
expect(result).toEqual({
startDate: '2026-01-06',
endDate: '2026-01-06',
});
});
});
describe('today', () => {
it('should return today date', () => {
const result = parseTimeRange('today');
expect(result).toEqual({
startDate: '2026-01-07',
endDate: '2026-01-07',
});
});
});
describe('this week', () => {
it('should return Monday to today', () => {
const result = parseTimeRange('this week');
expect(result).toEqual({
startDate: '2026-01-05', // Monday
endDate: '2026-01-07', // Wednesday (today)
});
});
});
describe('last week', () => {
it('should return previous Monday to Sunday', () => {
const result = parseTimeRange('last week');
expect(result).toEqual({
startDate: '2025-12-29', // Previous Monday
endDate: '2026-01-04', // Previous Sunday
});
});
});
describe('this month', () => {
it('should return 1st of month to today', () => {
const result = parseTimeRange('this month');
expect(result).toEqual({
startDate: '2026-01-01',
endDate: '2026-01-07',
});
});
});
describe('last month', () => {
it('should return full previous month', () => {
const result = parseTimeRange('last month');
expect(result).toEqual({
startDate: '2025-12-01',
endDate: '2025-12-31',
});
});
});
describe('last N days', () => {
it('should parse "last 3 days"', () => {
const result = parseTimeRange('last 3 days');
expect(result).toEqual({
startDate: '2026-01-04',
endDate: '2026-01-07',
});
});
it('should parse "past 7 days"', () => {
const result = parseTimeRange('past 7 days');
expect(result).toEqual({
startDate: '2025-12-31',
endDate: '2026-01-07',
});
});
it('should parse "last 1 day"', () => {
const result = parseTimeRange('last 1 day');
expect(result).toEqual({
startDate: '2026-01-06',
endDate: '2026-01-07',
});
});
});
describe('last N weeks', () => {
it('should parse "last 2 weeks"', () => {
const result = parseTimeRange('last 2 weeks');
expect(result).toEqual({
startDate: '2025-12-24',
endDate: '2026-01-07',
});
});
it('should parse "past 1 week"', () => {
const result = parseTimeRange('past 1 week');
expect(result).toEqual({
startDate: '2025-12-31',
endDate: '2026-01-07',
});
});
});
describe('last N months', () => {
it('should parse "last 3 months"', () => {
const result = parseTimeRange('last 3 months');
expect(result).toEqual({
startDate: '2025-10-07',
endDate: '2026-01-07',
});
});
});
describe('unrecognized expressions', () => {
it('should return null for invalid expressions', () => {
expect(parseTimeRange('next week')).toBeNull();
expect(parseTimeRange('random text')).toBeNull();
expect(parseTimeRange('')).toBeNull();
expect(parseTimeRange('2026-01-01')).toBeNull(); // Raw date not supported
});
});
});
describe('isTimeExpression', () => {
it('should recognize valid time expressions', () => {
expect(isTimeExpression('yesterday')).toBe(true);
expect(isTimeExpression('today')).toBe(true);
expect(isTimeExpression('this week')).toBe(true);
expect(isTimeExpression('last week')).toBe(true);
expect(isTimeExpression('this month')).toBe(true);
expect(isTimeExpression('last month')).toBe(true);
expect(isTimeExpression('last 3 days')).toBe(true);
expect(isTimeExpression('past 7 days')).toBe(true);
expect(isTimeExpression('last 2 weeks')).toBe(true);
expect(isTimeExpression('past 1 month')).toBe(true);
});
it('should reject invalid expressions', () => {
expect(isTimeExpression('next week')).toBe(false);
expect(isTimeExpression('random')).toBe(false);
expect(isTimeExpression('2026-01-01')).toBe(false);
expect(isTimeExpression('')).toBe(false);
});
it('should be case insensitive', () => {
expect(isTimeExpression('YESTERDAY')).toBe(true);
expect(isTimeExpression('Last Week')).toBe(true);
expect(isTimeExpression('LAST 3 DAYS')).toBe(true);
});
});
