@v4fire/core/src/core/prelude/number/format/spec.js

V4Fire core library

/*!
 * V4Fire Core
 * https://github.com/V4Fire/Core
 *
 * Released under the MIT license
 * https://github.com/V4Fire/Core/blob/master/LICENSE
 */

describe('core/prelude/number/format', () => {
	it('`pad`', () => {
		expect((1).pad()).toBe('1');
		expect((1).pad(2)).toBe('01');
		expect((-1).pad({length: 2})).toBe('-01');
		expect((10).pad(3, {sign: true})).toBe('+010');
		expect((10).pad({length: 3, sign: true})).toBe('+010');
		expect((2).pad(4, {base: 2})).toBe('0010');
	});

	it('`Number.pad`', () => {
		expect(Number.pad(1, 2)).toBe('01');
		expect(Number.pad(-1, {length: 2})).toBe('-01');
		expect(Number.pad({length: 2, sign: true})(1)).toBe('+01');
	});

	it('`format`', () => {
		expect(34.5656.format(2)).toBe('34.57');
		expect(34.5656.format()).toBe('34.566');

		expect(100.50.format('$', 'en-us'))
			.toBe('$100.50');

		expect(100.50.format('$:EUR;$d:code', 'en-us')).toBe(100.50.toLocaleString('en-us', {
			style: 'currency',
			currency: 'EUR',
			currencyDisplay: 'code'
		}));

		expect(100.50.format({style: 'currency', currency: 'USD'}, 'en-us'))
			.toBe(100.50.toLocaleString('en-us', {style: 'currency', currency: 'USD'}));
	});

	it('`Number.format`', () => {
		expect(Number.format(34.5656)).toBe('34.566');
		expect(Number.format('$', 'en-us')(100.50)).toBe('$100.50');
		expect(Number.format({style: 'currency', currency: 'USD'}, 'en-us')(100.50))
			.toBe(100.50.toLocaleString('en-us', {style: 'currency', currency: 'USD'}));
	});
});