import { expect } from '@open-wc/testing';
import { localize } from '@lion/ui/localize.js';
import { localizeTearDown } from '@lion/ui/localize-test-helpers.js';

import { formatAmount } from '@lion/ui/input-amount.js';

describe('formatAmount()', () => {
  afterEach(() => {
    localizeTearDown();
  });

  it('formats number with options', async () => {
    expect(
      formatAmount(12.345678, {
        locale: 'en-GB',
        minimumFractionDigits: 2,
        maximumFractionDigits: 2,
      }),
    ).to.equal('12.35');
    expect(
      formatAmount(12.345678, {
        locale: 'nl-NL',
        minimumFractionDigits: 2,
        maximumFractionDigits: 2,
      }),
    ).to.equal('12,35');
    expect(
      formatAmount(12345678, {
        locale: 'en-GB',
        minimumFractionDigits: 2,
        maximumFractionDigits: 2,
      }),
    ).to.equal('12,345,678.00');
    expect(
      formatAmount(12345678, {
        locale: 'nl-NL',
        minimumFractionDigits: 2,
        maximumFractionDigits: 2,
      }),
    ).to.equal('12.345.678,00');
    expect(
      formatAmount(12.345678, {
        locale: 'en-GB',
        minimumFractionDigits: 0,
        maximumFractionDigits: 1,
      }),
    ).to.equal('12.3');
    expect(
      formatAmount(12.345678, {
        locale: 'en-GB',
        minimumFractionDigits: 3,
        maximumFractionDigits: 3,
      }),
    ).to.equal('12.346');
    expect(
      formatAmount(-12.345678, {
        locale: 'en-GB',
        minimumFractionDigits: 2,
        maximumFractionDigits: 2,
      }),
    ).to.equal('−12.35');
  });

  it('formats the right amount of fraction digits for a certain currency', async () => {
    expect(formatAmount(123456.78, { locale: 'en-GB', currency: 'EUR' })).to.equal('123,456.78');
    expect(formatAmount(123456.78, { locale: 'en-GB', currency: 'JOD' })).to.equal('123,456.780');
  });

  it('fallbacks to global locale and EUR by default', async () => {
    localize.locale = 'en-GB';
    expect(formatAmount(12345678)).to.equal('12,345,678.00');
    localize.locale = 'nl-NL';
    expect(formatAmount(12345678)).to.equal('12.345.678,00');
  });
});