polygerrit-ui/app/utils/string-util_test.ts

/**
 * @license
 * Copyright 2017 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import '../test/common-test-setup-karma';
import {pluralize, ordinal, listForSentence} from './string-util';

suite('formatter util tests', () => {
  test('pluralize', () => {
    const noun = 'comment';
    assert.equal(pluralize(0, noun), '');
    assert.equal(pluralize(1, noun), '1 comment');
    assert.equal(pluralize(2, noun), '2 comments');
  });

  test('ordinal', () => {
    assert.equal(ordinal(0), '0th');
    assert.equal(ordinal(1), '1st');
    assert.equal(ordinal(2), '2nd');
    assert.equal(ordinal(3), '3rd');
    assert.equal(ordinal(4), '4th');
    assert.equal(ordinal(10), '10th');
    assert.equal(ordinal(11), '11th');
    assert.equal(ordinal(12), '12th');
    assert.equal(ordinal(13), '13th');
    assert.equal(ordinal(44413), '44413th');
    assert.equal(ordinal(44451), '44451st');
  });

  test('listForSentence', () => {
    assert.equal(listForSentence(['Foo', 'Bar', 'Baz']), 'Foo, Bar, and Baz');
    assert.equal(listForSentence(['Foo', 'Bar']), 'Foo and Bar');
    assert.equal(listForSentence(['Foo']), 'Foo');
    assert.equal(listForSentence([]), '');
  });
});