third_party/WebKit/LayoutTests/fast/dom/Element/parent-node-interface.html

   1 <!DOCTYPE html>
   2 <body>
   3 <script src="../../../resources/js-test.js"></script>
   4 <script>
   5
   6 description('This tests that Element implements the ParentNode interface.');
   7
   8 var element = document.createElementNS('foo', 'element');
   9
  10 shouldBe('element.children.length', '0');
  11 shouldBe('element.childElementCount', '0');
  12 shouldBeNull('element.firstElementChild');
  13 shouldBeNull('element.lastElementChild');
  14
  15 element.appendChild(new Text('a'));
  16 shouldBe('element.children.length', '0');
  17 shouldBe('element.childElementCount', '0');
  18 shouldBeNull('element.firstElementChild');
  19 shouldBeNull('element.lastElementChild');
  20
  21 var b = element.appendChild(document.createElement('b'));
  22 shouldBe('element.children.length', '1');
  23 shouldBe('element.childElementCount', '1');
  24 shouldBe('element.children[0]', 'b');
  25 shouldBe('element.firstElementChild', 'b');
  26 shouldBe('element.lastElementChild', 'b');
  27
  28 element.appendChild(new Text('c'));
  29 shouldBe('element.children.length', '1');
  30 shouldBe('element.childElementCount', '1');
  31 shouldBe('element.children[0]', 'b');
  32 shouldBe('element.firstElementChild', 'b');
  33 shouldBe('element.lastElementChild', 'b');
  34
  35 var d = element.appendChild(document.createElement('d'));
  36 shouldBe('element.children.length', '2');
  37 shouldBe('element.childElementCount', '2');
  38 shouldBe('element.children[0]', 'b');
  39 shouldBe('element.children[1]', 'd');
  40 shouldBe('element.firstElementChild', 'b');
  41 shouldBe('element.lastElementChild', 'd');
  42
  43 element.appendChild(new Text('e'));
  44 shouldBe('element.children.length', '2');
  45 shouldBe('element.childElementCount', '2');
  46 shouldBe('element.children[0]', 'b');
  47 shouldBe('element.children[1]', 'd');
  48 shouldBe('element.firstElementChild', 'b');
  49 shouldBe('element.lastElementChild', 'd');
  50
  51 </script>