web/binary-size-table_test.ts

/**
 * @license
 * Copyright 2021 The Chromium Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

import {assert} from '@open-wc/testing';
import './test-setup';
import {
  humanByteSize,
  humanByteSizeDelta,
  percentSizeDelta,
} from './binary-size-table';

suite('binary-size-table basic tests', () => {
  test('humanByteSize below first threshold', () => {
    assert.equal(humanByteSize(1024), '1024 B');
  });

  test('humanByteSize KiB', () => {
    assert.equal(humanByteSize(2048), '2.00 KiB');
  });

  test('humanByteSize MiB', () => {
    assert.equal(humanByteSize(12345678), '11.774 MiB');
  });

  test('humanByteSize above last threshold', () => {
    assert.equal(humanByteSize(111222333444555), '103583.8699 GiB');
  });

  test('humanByteSizeDelta zero', () => {
    assert.equal(humanByteSizeDelta(0, 0), '—');
  });

  test('humanByteSizeDelta positive', () => {
    assert.equal(humanByteSizeDelta(0, 1), '+1 B');
  });

  test('humanByteSizeDelta negative', () => {
    assert.equal(humanByteSizeDelta(123456, 0), '−120.56 KiB');
  });

  test('percentSizeDelta negative', () => {
    assert.equal(percentSizeDelta(10000000, 9686630), '−3.1337%');
  });
});