diff --git a/datastructure/treenode_test.go b/datastructure/treenode_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..f4fb7a197b5b6bf43c0514e807fea2a6db1baee1
--- /dev/null
+++ b/datastructure/treenode_test.go
@@ -0,0 +1,18 @@
+package datastructure
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestStringToTreeNode(t *testing.T) {
+	// StringToTreeNode 本目录
+	root := StringToTreeNode("[5,4,5,1,1,5]") // 这个函数还有bug，再琢磨??
+	println(root)
+	fmt.Println(root)
+	// 二叉树转一维数组: 二叉树遍历(前中后) PreorderTraversal 本目录
+	//fmt.Println(PreorderTraversal(root)) // [5 5 1] 不对，还得琢磨??
+	fmt.Println(PostorderTraversal(root)) // [5 5 1] 不对，还得琢磨??
+	// 断言另说
+
+}