text: from solutions.a0094binarytreeinordertraversal import Solution
  from utils.tree.TreeNode import TreeNode
  
  solution = Solution()
  
  
  def test_inorderTraversal1():
    root = TreeNode.stringToTreeNode("[1,null,2,3]")
    expect = [1, 3, 2]
    actual = solution.inorderTraversal(root)
    assert actual == expect
  
  
  def test_inorderTraversal2():
    root = TreeNode.stringToTreeNode("[1,2,3]")
    expect = [2, 1, 3]
    actual = solution.inorderTraversal(root)
    assert actual == expect
  