numerica/packages/core/test/systems/en-US.test.ts

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

const options = { system: systems.enUS };

describe('numerica', () => {
	describe('group names', () => {
		describe('0-9', () => {
			it.each`
				ones | expected
				${0} | ${'zero'}
				${1} | ${'one'}
				${2} | ${'two'}
				${3} | ${'three'}
				${4} | ${'four'}
				${5} | ${'five'}
				${6} | ${'six'}
				${7} | ${'seven'}
				${8} | ${'eight'}
				${9} | ${'nine'}
			`('converts $ones to $expected', ({ ones, expected }: { ones: number, expected: string }) => {
				expect(stringify(ones, options)).toBe(expected);
				expect(parse(expected, { ...options, type: 'number' })).toBe(ones);
			});
		});

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

		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            | expected
				${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 $expected', ({ value, expected }: { value: number, expected: string }) => {
				expect(stringify(value, options)).toBe(expected);
				expect(parse(expected, { ...options, type: 'number' })).toBe(value);
			});
		});

		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                | expected
					${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 $expected', ({ value, expected }: { value: number, expected: string }) => {
					expect(stringify(value, options)).toBe(expected);
					expect(parse(expected, { ...options, type: 'number' })).toBe(value);
				});
			});

			describe(`${hundredsStart + 10}-${hundredsStart + 19}`, () => {
				it.each`
					value                 | expected
					${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 $expected', ({ value, expected }: { value: number, expected: string }) => {
					expect(stringify(value, options)).toBe(expected);
					expect(parse(expected, { ...options, type: 'number' })).toBe(value);
				});
			});

			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                        | expected
					${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 $expected', ({ value, expected }: { value: number, expected: string }) => {
					expect(stringify(value, options)).toBe(expected);
					expect(parse(expected, { ...options, type: 'number' })).toBe(value);
				});
			});
		});
	});

	it('converts 1000 to one thousand', () => {
		expect(stringify(1000, options)).toBe('one thousand');
		expect(parse('one thousand', { ...options, type: 'number' })).toBe(1000);
	});

	it('converts 10000 to ten thousand', () => {
		expect(stringify(10000, options)).toBe('ten thousand');
		expect(parse('ten thousand', { ...options, type: 'number' })).toBe(10000);
	});

	it('converts 100000 to one hundred thousand', () => {
		expect(stringify(100000, options)).toBe('one hundred thousand');
		expect(parse('one hundred thousand', { ...options, type: 'number' })).toBe(100000);
	});

	it('converts 123456 to one hundred twenty three thousand four hundred fifty six', () => {
		expect(stringify(123456, options)).toBe('one hundred twenty three thousand four hundred fifty six');
		expect(parse('one hundred twenty three thousand four hundred fifty six', { ...options, type: 'number' })).toBe(123456);
	});

	it.each`
		value    | expected
		${1e+6}  | ${'one million'}
		${1e+9}  | ${'one billion'}
		${1e+12} | ${'one trillion'}
		${1e+15} | ${'one quadrillion'}
		${1e+18} | ${'one quintillion'}
		${1e+21} | ${'one sextillion'}
		${1e+24} | ${'one septillion'}
		${1e+27} | ${'one octillion'}
		${1e+30} | ${'one nonillion'}
	`('converts $value to $expected', ({ value, expected }: { value: number, expected: string }) => {
		expect(stringify(value, options)).toBe(expected);
		expect(parse(expected, { ...options, type: 'number' })).toBe(value);
	});

	it.each`
		value    | expected
		${'1e+33'} | ${'one decillion'}
		${'1e+36'} | ${'one undecillion'}
		${'1e+39'} | ${'one duodecillion'}
		${'1e+42'} | ${'one tredecillion'}
		${'1e+45'} | ${'one quattuordecillion'}
		${'1e+48'} | ${'one quindecillion'}
		${'1e+51'} | ${'one sexdecillion'}
		${'1e+54'} | ${'one septendecillion'}
		${'1e+57'} | ${'one octodecillion'}
		${'1e+60'} | ${'one novemdecillion'}
	`('converts $value to $expected', ({ value, expected }: { value: string, expected: string }) => {
		expect(stringify(value, options)).toBe(expected);
		expect(parse(expected, options)).toBe(value);
	});

	it.each`
		value    | expected
		${'1e+63'} | ${'one vigintillion'}
		${'1e+66'} | ${'one unvigintillion'}
		${'1e+69'} | ${'one duovigintillion'}
		${'1e+72'} | ${'one trevigintillion'}
		${'1e+75'} | ${'one quattuorvigintillion'}
		${'1e+78'} | ${'one quinvigintillion'}
		${'1e+81'} | ${'one sexvigintillion'}
		${'1e+84'} | ${'one septenvigintillion'}
		${'1e+87'} | ${'one octovigintillion'}
		${'1e+90'} | ${'one novemvigintillion'}
	`('converts $value to $expected', ({ value, expected }: { value: string, expected: string }) => {
		expect(stringify(value, options)).toBe(expected);
		expect(parse(expected, options)).toBe(value);
	});

	it.each`
		value    | expected
		${'1e+93'} | ${'one trigintillion'}
		${'1e+123'} | ${'one quadragintillion'}
		${'1e+153'} | ${'one quinquagintillion'}
		${'1e+183'} | ${'one sexagintillion'}
		${'1e+213'} | ${'one septuagintillion'}
		${'1e+243'} | ${'one octogintillion'}
		${'1e+273'} | ${'one nonagintillion'}
	`('converts $value to $expected', ({ value, expected }: { value: string, expected: string }) => {
		expect(stringify(value, options)).toBe(expected);
		expect(parse(expected, options)).toBe(value);
	});

	it('converts values', () => {
		const exp1 = numberToExponential('123,456,789,012,345,678,901,234,567,890');
		//
		// one hundred twenty three octillion
		// four hundred fifty six septillion
		// seven hundred eighty nine sextillion
		// twelve quintillion
		// three hundred forty five quadrillion
		// six hundred seventy eight trillion
		// nine hundred one billion
		// two hundred thirty four million
		// five hundred sixty seven thousand
		// eight hundred ninety
		expect(parse(stringify('123456789012345678901234567890'))).toBe(exp1);

		const value2 = '1000005000000';
		const exp2 = numberToExponential(value2);
		expect(stringify(value2)).toBe('one trillion five million');
		expect(parse(stringify(value2))).toBe(exp2);
	});
});