public void Previous_WithNodeWithoutPreviousSibling_ShouldReturnFalseAndNotMoveCurrent()
{
var node = GetTagNode();
var tree = new NodeTree(node);
var result = tree.Previous();
Assert.IsFalse(result);
Assert.AreEqual(node, tree.Current);
}
public void Previous_WithNodeThatHasPreviousSibling_ShouldReturnTrueAndMoveCurrentToCurrentsPreviousSibling()
{
var prev = GetTagNode();
var node = GetTagNodeWithPrevSibling(prev);
var tree = new NodeTree(node);
var result = tree.Previous();
Assert.IsTrue(result);
Assert.AreEqual(prev, tree.Current);
}