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File: TreeWalkerTest.js
asynctest(
  'browser.tinymce.core.dom.TreeWalkerTest',
  [
    'ephox.agar.api.Pipeline',
    'ephox.mcagar.api.LegacyUnit',
    'tinymce.core.dom.TreeWalker',
    'tinymce.core.test.ViewBlock'
  ],
  function (Pipeline, LegacyUnit, TreeWalker, ViewBlock) {
    var success = arguments[arguments.length - 2];
    var failure = arguments[arguments.length - 1];
    var suite = LegacyUnit.createSuite();
    var viewBlock = ViewBlock();
    var nodes;

    var setup = function () {
      var all = function (node) {
        var list = [node];

        if (node.hasChildNodes()) {
          for (var i = 0; i < node.childNodes.length; i++) {
            list = list.concat(all(node.childNodes[i]));
          }
        }

        return list;
      };

      viewBlock.update(
        '1' +
        '<ul>' +
          '<li>' +
            '2' +
            '<ul>' +
              '<li>3</li>' +
              '<li>4</li>' +
            '</ul>' +
            '</li>' +
            '<li>' +
            '5' +
            '<ul>' +
              '<li>6</li>' +
              '<li>7</li>' +
            '</ul>' +
          '</li>' +
        '</ul>' +
        '8'
      );

      nodes = all(viewBlock.get()).slice(1);
    };

    var compareNodeLists = function (expectedNodes, actutalNodes) {
      if (expectedNodes.length !== actutalNodes.length) {
        return false;
      }

      for (var i = 0; i < expectedNodes.length; i++) {
        if (expectedNodes[i] !== actutalNodes[i]) {
          return false;
        }
      }

      return true;
    };

    suite.test('next', function () {
      var walker = new TreeWalker(nodes[0], viewBlock.get());
      var actualNodes;

      actualNodes = [walker.current()];
      while ((walker.next())) {
        actualNodes.push(walker.current());
      }

      LegacyUnit.equal(compareNodeLists(nodes, actualNodes), true, 'Should be the same');
    });

    suite.test('prev2', function () {
      var walker = new TreeWalker(nodes[nodes.length - 1], viewBlock.get());
      var actualNodes;

      actualNodes = [walker.current()];
      while ((walker.prev2())) {
        actualNodes.push(walker.current());
      }

      actualNodes = actualNodes.reverse();
      LegacyUnit.equal(compareNodeLists(nodes, actualNodes), true, 'Should be the same');
    });

    suite.test('prev2(shallow:true)', function () {
      var walker = new TreeWalker(nodes[nodes.length - 1], viewBlock.get());
      var actualNodes;

      actualNodes = [walker.current()];
      while ((walker.prev2(true))) {
        actualNodes.push(walker.current());
      }

      actualNodes = actualNodes.reverse();
      LegacyUnit.equal(compareNodeLists(viewBlock.get().childNodes, actualNodes), true, 'Should be the same');
    });

    viewBlock.attach();
    setup();

    Pipeline.async({}, suite.toSteps({}), function () {
      viewBlock.detach();
      success();
    }, failure);
  }
);