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common: test Tzolkʼin conversions for some historical dates

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Quantum 2025-06-25 20:36:28 -04:00
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commit 5cb6c2797f
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9
common/src/mayan.test.ts
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@ -62,6 +62,15 @@ describe('jdnTzolkin', () => {
expect(jdnTzolkin(2460857)).toEqual({number: 2, name: TzolkinName.IX}); expect(jdnTzolkin(2460857)).toEqual({number: 2, name: TzolkinName.IX});
}); });
it('converts sample dates from history correctly', () => {
expect(jdnTzolkin(584283)).toEqual({number: 4, name: TzolkinName.AJAW}); // Mayan creation
expect(jdnTzolkin(1705426)).toEqual({number: 1, name: TzolkinName.AKBAL}); // Ides of March
expect(jdnTzolkin(2266296)).toEqual({number: 12, name: TzolkinName.BEN}); // Columbus reaches the Americas
expect(jdnTzolkin(2430336)).toEqual({number: 5, name: TzolkinName.BEN}); // a date which will live in infamy
expect(jdnTzolkin(2440423)).toEqual({number: 4, name: TzolkinName.AJAW}); // Moon landing
expect(jdnTzolkin(2458920)).toEqual({number: 2, name: TzolkinName.KABAN}); // COVID-19 pandemic
});
it('handles negative JDN correctly', () => { it('handles negative JDN correctly', () => {
expect(jdnTzolkin(-1)).toEqual({number: 5, name: TzolkinName.KIB}); expect(jdnTzolkin(-1)).toEqual({number: 5, name: TzolkinName.KIB});
expect(jdnTzolkin(-10)).toEqual({number: 9, name: TzolkinName.MANIK}); expect(jdnTzolkin(-10)).toEqual({number: 9, name: TzolkinName.MANIK});