public void TreeEntityExtensions_GetPostfixTree()
{
TestTree tree = new TestTree();
TreeNode node1 = new TreeNode();
tree.SetRootNode(node1);
TreeNode node2 = new TreeNode();
TreeNode node3 = new TreeNode();
node1.AppendChild(node2);
node1.AppendChild(node3);
TreeNode node4 = new TreeNode();
node2.AppendChild(node4);
TreeNode node5 = new TreeNode();
TreeNode node6 = new TreeNode();
node3.AppendChild(node5);
node3.AppendChild(node6);
List <TreeNode> list = TreeEntityExtensions.GetPostfixTree(tree).ToList();
Assert.Equal(new TreeNode[]
{
node4,
node2,
node5,
node6,
node3,
node1
}, list);
}
public void TreeEntityExtensions_GetPostfixTree_NullTree()
{
Assert.Throws <ArgumentNullException>(() => TreeEntityExtensions.GetPostfixTree(null));
}