range_test.html - Android社区 - https://www.androidos.net.cn/

<!DOCTYPE HTML>
<html>
<!--
Copyright (c) 2012 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.
-->
<head>
<title>Range tests</title>
<script src="base.js"></script>
<script>
  base.require('unittest');
  base.require('test_utils');
  base.require('range');
</script>
</head>
<body>
<script>
  'use strict';

  var Range = base.Range;

  function testAddValue() {
    var range = new Range();
    assertTrue(range.isEmpty);
    range.addValue(1);
    assertFalse(range.isEmpty);
    assertEquals(range.min, 1);
    assertEquals(range.max, 1);

    range.addValue(2);
    assertFalse(range.isEmpty);
    assertEquals(range.min, 1);
    assertEquals(range.max, 2);
  }

  function testAddNonEmptyRange1() {
    var r1 = new Range();
    r1.addValue(1);
    r1.addValue(2);

    var r = new Range();
    r.addRange(r1);
    assertEquals(r.min, 1);
    assertEquals(r.max, 2);
  }

  function testAddEmptyRange() {
    var r1 = new Range();

    var r = new Range();
    r.addRange(r1);
    assertTrue(r.isEmpty);
    assertEquals(r.min, undefined);
    assertEquals(r.max, undefined);
  }

  function testAddEmptyRange() {
    var r1 = new Range();
    r1.addValue(1);
    r1.addValue(2);

    var r = new Range();
    r.addValue(3);
    r.addRange(r1);
    assertFalse(r.isEmpty);
    assertEquals(r.min, 1);
    assertEquals(r.max, 3);
  }

</script>
</body>
</html>