numerica/packages/core/test/systems/en-UK/long-count.test.ts

import { describe, it, expect } from 'vitest';
import {
	AllowedValue,
	parse,
	stringify,
	systems,
} from '../../../src';

const options = {
	system: systems.enUK.longCount,
};

const doExpect = (
	value: AllowedValue,
	stringified: string,
	parsedValue: AllowedValue = value,
) => {
	const stringifyOptions = {
		...options,
	};

	const parseOptions = {
		...options,
		type: typeof value as ('number' | 'string' | 'bigint'),
	};

	expect(stringify(value, stringifyOptions)).toBe(stringified);
	expect(parse(stringified, parseOptions)).toBe(parsedValue);
};

describe('British long count', () => {
	it('returns empty string for empty input', () => {
		expect(parse('')).toBe('');
	});

	it('formats doubly negative numbers to be positive', () => {
		expect(stringify('--1')).toBe('one');
		expect(stringify('----1')).toBe('one');
	});

	describe('error handling', () => {
		it('throws an error when given fully unparseable input', () => {
			expect(() => parse('foo')).toThrow();
		});

		it('throws an error when given partially unparseable input', () => {
			expect(() => parse('one milliamilliafootillion')).toThrow();
			expect(() => parse('one millia^foo-tillion')).toThrow();
			expect(() => parse('one millia^0-tillion')).toThrow();
		});
	});

	describe('options', () => {
		it('formats one group per line', () => {
			expect(stringify(1234567, { mergeTokensOptions: { oneGroupPerLine: true } })).toBe(`one million
two hundred thirty-four thousand
five hundred sixty-seven`);
		});
	});

	describe('individual cases', () => {
		const longNumberValue1 = '123,456,789,012,345,678,901,234,567,890';
		const longNumberStringified1 = [
			'one hundred twenty-three thousand quadrillion',
			'four hundred fifty-six quadrillion',
			'seven hundred eighty-nine thousand trillion',
			'twelve trillion',
			'three hundred forty-five thousand billion',
			'six hundred seventy-eight billion',
			'nine hundred one thousand million',
			'two hundred thirty-four million',
			'five hundred sixty-seven thousand',
			'eight hundred ninety',
		].join(' ');

		const longNumberParsedValue = '1.2345678901234567890123456789e+29';

		it.each`
			value               | stringified                                                   | parsedValue
			${1000}             | ${'one thousand'}                                             | ${1000}
			${10000}            | ${'ten thousand'}                                             | ${10000}
			${12012}            | ${'twelve thousand twelve'}                                   | ${12012}
			${12020}            | ${'twelve thousand twenty'}                                   | ${12020}
			${100000}           | ${'one hundred thousand'}                                     | ${100000}
			${123456}           | ${'one hundred twenty-three thousand four hundred fifty-six'} | ${123456}
			${'1000005000000'}  | ${'one billion five million'}                                 | ${'1.000005e+12'}
			${longNumberValue1} | ${longNumberStringified1}                                     | ${longNumberParsedValue}
			${'1e6006'}         | ${'one milliauntillion'}                                      | ${'1e+6006'}
		`('converts $value to $stringified', ({
			value,
			stringified,
			parsedValue,
		}: { value: AllowedValue, stringified: string, parsedValue: AllowedValue }) => {
			doExpect(value, stringified, parsedValue);
		});

		it('converts one millia^1-tillion to 1e+3003', () => {
			expect(parse('one millia^1-tillion')).toBe('1e+3003');
		});
	});

	describe('blanket cases', () => {
		it('converts one millia^2-tillion', () => {
			const value = '1e+3000003';
			const stringified = 'one millia^2-tillion';
			expect(parse(stringified)).toBe(value);
			expect(stringify(value, { stringifyGroupsOptions: { shortenMillia: true } }))
				.toBe(stringified);
		});

		it('converts one millia^2-unmilliatillion', () => {
			const value = '1e+3003003';
			const stringified = 'one millia^2-unmilliatillion';
			expect(stringify(value, { stringifyGroupsOptions: { shortenMillia: true } }))
				.toBe(stringified);
			expect(parse(stringified)).toBe(value);
		});

		it('converts one milliamilliaunmilliatillion', () => {
			const value = '1e+3003003';
			const stringified = 'one milliamilliaunmilliatillion';
			expect(stringify(value)).toBe(stringified);
			expect(parse(stringified)).toBe('1e+3003003');
		});
	});

	describe('general', () => {
		describe('0-9', () => {
			it.each`
				value | numberName
				${0}  | ${'zero'}
				${1}  | ${'one'}
				${2}  | ${'two'}
				${3}  | ${'three'}
				${4}  | ${'four'}
				${5}  | ${'five'}
				${6}  | ${'six'}
				${7}  | ${'seven'}
				${8}  | ${'eight'}
				${9}  | ${'nine'}
			`('converts $ones to $numberName', ({ value, numberName }: { value: number, numberName: string }) => {
				doExpect(value, numberName);
			});
		});

		describe('10-19', () => {
			it.each`
				value | numberName
				${10} | ${'ten'}
				${11} | ${'eleven'}
				${12} | ${'twelve'}
				${13} | ${'thirteen'}
				${14} | ${'fourteen'}
				${15} | ${'fifteen'}
				${16} | ${'sixteen'}
				${17} | ${'seventeen'}
				${18} | ${'eighteen'}
				${19} | ${'nineteen'}
			`('converts $tenPlusOnes to $numberName', ({ value, numberName }: { value: number, numberName: string }) => {
				doExpect(value, numberName);
			});
		});

		describe.each`
			tensStart | tensEnd | tensBase
			${20}     | ${29}   | ${'twenty'}
			${30}     | ${39}   | ${'thirty'}
			${40}     | ${49}   | ${'forty'}
			${50}     | ${59}   | ${'fifty'}
			${60}     | ${69}   | ${'sixty'}
			${70}     | ${79}   | ${'seventy'}
			${80}     | ${89}   | ${'eighty'}
			${90}     | ${99}   | ${'ninety'}
		`('$tensStart-$tensEnd', ({
			tensStart, tensBase,
		}: { tensStart: number, tensBase: string }) => {
			it.each`
				value            | numberName
				${tensStart}     | ${tensBase}
				${tensStart + 1} | ${`${tensBase}-one`}
				${tensStart + 2} | ${`${tensBase}-two`}
				${tensStart + 3} | ${`${tensBase}-three`}
				${tensStart + 4} | ${`${tensBase}-four`}
				${tensStart + 5} | ${`${tensBase}-five`}
				${tensStart + 6} | ${`${tensBase}-six`}
				${tensStart + 7} | ${`${tensBase}-seven`}
				${tensStart + 8} | ${`${tensBase}-eight`}
				${tensStart + 9} | ${`${tensBase}-nine`}
			`('converts $value to $numberName', ({ value, numberName }: { value: number, numberName: string }) => {
				doExpect(value, numberName);
			});
		});

		describe.each`
			hundredsStart | hundredsEnd | hundredsBase
			${100}        | ${199}      | ${'one hundred'}
			${200}        | ${299}      | ${'two hundred'}
			${300}        | ${399}      | ${'three hundred'}
			${400}        | ${499}      | ${'four hundred'}
			${500}        | ${599}      | ${'five hundred'}
			${600}        | ${699}      | ${'six hundred'}
			${700}        | ${799}      | ${'seven hundred'}
			${800}        | ${899}      | ${'eight hundred'}
			${900}        | ${999}      | ${'nine hundred'}
		`('$hundredsStart-$hundredsEnd', ({
			hundredsStart, hundredsBase,
		}: { hundredsStart: number, hundredsBase: string }) => {
			describe(`${hundredsStart}-${hundredsStart + 9}`, () => {
				it.each`
					value                | numberName
					${hundredsStart}     | ${hundredsBase}
					${hundredsStart + 1} | ${`${hundredsBase} one`}
					${hundredsStart + 2} | ${`${hundredsBase} two`}
					${hundredsStart + 3} | ${`${hundredsBase} three`}
					${hundredsStart + 4} | ${`${hundredsBase} four`}
					${hundredsStart + 5} | ${`${hundredsBase} five`}
					${hundredsStart + 6} | ${`${hundredsBase} six`}
					${hundredsStart + 7} | ${`${hundredsBase} seven`}
					${hundredsStart + 8} | ${`${hundredsBase} eight`}
					${hundredsStart + 9} | ${`${hundredsBase} nine`}
				`('converts $value to $numberName', ({ value, numberName }: { value: number, numberName: string }) => {
					doExpect(value, numberName);
				});
			});

			describe(`${hundredsStart + 10}-${hundredsStart + 19}`, () => {
				it.each`
					value                 | numberName
					${hundredsStart + 10} | ${`${hundredsBase} ten`}
					${hundredsStart + 11} | ${`${hundredsBase} eleven`}
					${hundredsStart + 12} | ${`${hundredsBase} twelve`}
					${hundredsStart + 13} | ${`${hundredsBase} thirteen`}
					${hundredsStart + 14} | ${`${hundredsBase} fourteen`}
					${hundredsStart + 15} | ${`${hundredsBase} fifteen`}
					${hundredsStart + 16} | ${`${hundredsBase} sixteen`}
					${hundredsStart + 17} | ${`${hundredsBase} seventeen`}
					${hundredsStart + 18} | ${`${hundredsBase} eighteen`}
					${hundredsStart + 19} | ${`${hundredsBase} nineteen`}
				`('converts $value to $numberName', ({ value, numberName }: { value: number, numberName: string }) => {
					doExpect(value, numberName);
				});
			});

			describe.each`
				start | end   | base
				${20} | ${29} | ${'twenty'}
				${30} | ${39} | ${'thirty'}
				${40} | ${49} | ${'forty'}
				${50} | ${59} | ${'fifty'}
				${60} | ${69} | ${'sixty'}
				${70} | ${79} | ${'seventy'}
				${80} | ${89} | ${'eighty'}
				${90} | ${99} | ${'ninety'}
			`('$start-$end', ({
				start, base,
			}: { start: number, base: string }) => {
				it.each`
					value                        | numberName
					${hundredsStart + start}     | ${`${hundredsBase} ${base}`}
					${hundredsStart + start + 1} | ${`${hundredsBase} ${base}-one`}
					${hundredsStart + start + 2} | ${`${hundredsBase} ${base}-two`}
					${hundredsStart + start + 3} | ${`${hundredsBase} ${base}-three`}
					${hundredsStart + start + 4} | ${`${hundredsBase} ${base}-four`}
					${hundredsStart + start + 5} | ${`${hundredsBase} ${base}-five`}
					${hundredsStart + start + 6} | ${`${hundredsBase} ${base}-six`}
					${hundredsStart + start + 7} | ${`${hundredsBase} ${base}-seven`}
					${hundredsStart + start + 8} | ${`${hundredsBase} ${base}-eight`}
					${hundredsStart + start + 9} | ${`${hundredsBase} ${base}-nine`}
				`('converts $value to $numberName', ({ value, numberName }: { value: number, numberName: string }) => {
					doExpect(value, numberName);
				});
			});
		});
	});

	it.each`
		value      | numberName
		${'1e+6'}  | ${'one million'}
		${'1e+9'}  | ${'one thousand million'}
		${'1e+12'} | ${'one billion'}
		${'1e+15'} | ${'one thousand billion'}
		${'1e+18'} | ${'one trillion'}
		${'1e+21'} | ${'one thousand trillion'}
		${'1e+24'} | ${'one quadrillion'}
		${'1e+27'} | ${'one thousand quadrillion'}
		${'1e+30'} | ${'one quintillion'}
		${'1e+33'} | ${'one thousand quintillion'}
		${'1e+36'} | ${'one sextillion'}
		${'1e+39'} | ${'one thousand sextillion'}
		${'1e+42'} | ${'one septillion'}
		${'1e+45'} | ${'one thousand septillion'}
		${'1e+48'} | ${'one octillion'}
		${'1e+51'} | ${'one thousand octillion'}
		${'1e+54'} | ${'one nonillion'}
		${'1e+57'} | ${'one thousand nonillion'}
	`('converts $value to $numberName', ({ value, numberName }: { value: string, numberName: string }) => {
		doExpect(value, numberName);
	});

	it.each`
		value       | numberName
		${'1e+60'}  | ${'one decillion'}
		${'1e+66'}  | ${'one undecillion'}
		${'1e+72'}  | ${'one duodecillion'}
		${'1e+78'}  | ${'one tredecillion'}
		${'1e+84'}  | ${'one quattuordecillion'}
		${'1e+90'}  | ${'one quindecillion'}
		${'1e+96'}  | ${'one sexdecillion'}
		${'1e+102'} | ${'one septendecillion'}
		${'1e+108'} | ${'one octodecillion'}
		${'1e+114'} | ${'one novemdecillion'}
	`('converts $value to $numberName', ({ value, numberName }: { value: string, numberName: string }) => {
		doExpect(value, numberName);
	});

	it.each`
		value       | numberName
		${'1e+120'} | ${'one vigintillion'}
		${'1e+126'} | ${'one unvigintillion'}
		${'1e+132'} | ${'one duovigintillion'}
		${'1e+138'} | ${'one trevigintillion'}
		${'1e+144'} | ${'one quattuorvigintillion'}
		${'1e+150'} | ${'one quinvigintillion'}
		${'1e+156'} | ${'one sexvigintillion'}
		${'1e+162'} | ${'one septenvigintillion'}
		${'1e+168'} | ${'one octovigintillion'}
		${'1e+174'} | ${'one novemvigintillion'}
	`('converts $value to $numberName', ({ value, numberName }: { value: string, numberName: string }) => {
		doExpect(value, numberName);
	});

	it.each`
		value       | numberName
		${'1e+180'} | ${'one trigintillion'}
		${'1e+240'} | ${'one quadragintillion'}
		${'1e+300'} | ${'one quinquagintillion'}
		${'1e+360'} | ${'one sexagintillion'}
		${'1e+420'} | ${'one septuagintillion'}
		${'1e+480'} | ${'one octogintillion'}
		${'1e+540'} | ${'one nonagintillion'}
	`('converts $value to $numberName', ({ value, numberName }: { value: string, numberName: string }) => {
		doExpect(value, numberName);
	});

	it.each`
		value        | numberName
		${'1e+600'}  | ${'one centillion'}
		${'1e+606'}  | ${'one cenuntillion'}
		${'1e+612'}  | ${'one cenduotillion'}
		${'1e+618'}  | ${'one centretillion'}
		${'1e+624'}  | ${'one cenquattuortillion'}
		${'1e+630'}  | ${'one cenquintillion'}
		${'1e+636'}  | ${'one censextillion'}
		${'1e+642'}  | ${'one censeptentillion'}
		${'1e+648'}  | ${'one cenoctotillion'}
		${'1e+654'}  | ${'one cennovemtillion'}
		${'1e+1200'} | ${'one duocentillion'}
		${'1e+1800'} | ${'one trecentillion'}
		${'1e+2400'} | ${'one quadringentillion'}
		${'1e+3000'} | ${'one quingentillion'}
		${'1e+3600'} | ${'one sescentillion'}
		${'1e+4200'} | ${'one septingentillion'}
		${'1e+4800'} | ${'one octingentillion'}
		${'1e+5400'} | ${'one nongentillion'}
	`('converts $value to $numberName', ({ value, numberName }: { value: string, numberName: string }) => {
		doExpect(value, numberName);
	});

	it('converts \'1e+6000\' to \'one milliatillion\'', () => {
		doExpect('1e+6000', 'one milliatillion');
	});
});