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import { describe, expect, test } from 'vitest'
import {
DAYS_PER_YEAR,
FESTIVAL_DAYS,
FESTIVAL_MONTH,
MONTH_NAMES,
daysInMonth,
isFestival,
monthName,
monthSeason
} from '@hollowdark/time/calendar'
describe('calendar constants', () => {
test('year is 365 days', () => {
expect(DAYS_PER_YEAR).toBe(365)
})
test('festival is 5 days', () => {
expect(FESTIVAL_DAYS).toBe(5)
expect(daysInMonth(FESTIVAL_MONTH)).toBe(5)
})
test('regular months are 30 days each', () => {
for (let m = 1; m <= 12; m++) {
expect(daysInMonth(m)).toBe(30)
}
})
test('month count including festival is 13', () => {
expect(MONTH_NAMES).toHaveLength(13)
})
})
describe('monthName', () => {
test('spring months', () => {
expect(monthName(1)).toBe('Thawing')
expect(monthName(2)).toBe('Greening')
expect(monthName(3)).toBe('Blossomtide')
})
test('summer, autumn, winter months', () => {
expect(monthName(4)).toBe('Highsun')
expect(monthName(7)).toBe('Firstfall')
expect(monthName(12)).toBe('Rimefrost')
})
test('festival is month 13', () => {
expect(monthName(13)).toBe("Year's End Festival")
expect(isFestival(13)).toBe(true)
expect(isFestival(12)).toBe(false)
})
test('rejects out-of-range months', () => {
expect(() => monthName(0)).toThrow()
expect(() => monthName(14)).toThrow()
expect(() => monthName(1.5)).toThrow()
})
})
describe('monthSeason', () => {
test('each season has three months', () => {
const seasons = new Map<string, number>()
for (let m = 1; m <= 13; m++) {
const s = monthSeason(m)
seasons.set(s, (seasons.get(s) ?? 0) + 1)
}
expect(seasons.get('spring')).toBe(3)
expect(seasons.get('summer')).toBe(3)
expect(seasons.get('autumn')).toBe(3)
expect(seasons.get('winter')).toBe(3)
expect(seasons.get('festival')).toBe(1)
})
test('specific month → season mappings', () => {
expect(monthSeason(1)).toBe('spring')
expect(monthSeason(4)).toBe('summer')
expect(monthSeason(7)).toBe('autumn')
expect(monthSeason(10)).toBe('winter')
expect(monthSeason(13)).toBe('festival')
})
})
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