先添加上，但是具体的测试方案，想等添加了迭代器相关函数后再写。

test/test.c

@@ -83,6 +83,7 @@ int main(int argc, char const *argv[])
     TEST_ADD(test_list);
     TEST_ADD(test_deque);
     TEST_ADD(test_heap);
+    TEST_ADD(test_tree);
     
     return UNITY_END();
 }

test/test_tree.c

@@ -1,3 +1,471 @@
-
+/**
+ * @file test_tree.c
+ * @author wenjf (Orig5826@163.com)
+ * @brief 
+ * @version 0.1
+ * @date 2024-09-02
+ * 
+ * @copyright Copyright (c) 2024
+ * 
+ */
 #include "test.h"
 
+// if vs2022 has error: 'max': macro redefinition
+#ifdef max
+#undef max
+#endif
+
+#ifdef min
+#undef min
+#endif
+
+#if 0
+/**
+ * @brief 
+ * int data[] = { 5,2,3,1,7,8,6 };
+ *           5
+ *      |         |
+ *      2         7
+ *   |    |     |   |
+ *   1    3     6   8
+ */
+void test_avltree_num(void)
+{
+    uint32_t i = 0;
+    // int data[] = { 2,1,3,4};
+    // int data[] = { 1,2,3,4,5,6};
+    // int data[] = { 5,2,3,1,7,8,6 };
+    int data[] = { 5,2,3,1,7,8,6,4,9,10,12,11,15,14,13 };
+    int temp = 0;
+    uint32_t len = sizeof(data) / sizeof(data[0]);
+
+    tree_t tree = tree_new();
+    tree_avl_init(tree, sizeof(int));
+    tree->print_obj = print_num;
+    tree->compare = compare_num;
+
+    printf("\n\n----- demo_avltree_num -----\n");
+
+    printf("----- insert -----\n");
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        tree->insert(tree, &temp);
+
+        printf("insert = ");
+        tree->print_obj(&temp);
+        printf("size = %2d : ", tree->size(tree));
+        tree->preorder(tree, tree->_root);
+        printf("\n");
+    }
+
+    printf("----- max -----\n");
+    tree->max(tree, &temp);
+    tree->print_obj(&temp);
+    printf("\n");
+
+    printf("----- min -----\n");
+    tree->min(tree, &temp);
+    tree->print_obj(&temp);
+    printf("\n");
+
+    printf("----- tree -----\n");
+    tree->clear(tree);
+    if(tree->empty(tree))
+    {
+        printf("----- empty -----\n");
+    }
+    printf("----- insert -----\n");
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        tree->insert(tree, &temp);
+    }
+
+    printf("----- preorder -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- inorder -----\n");
+    tree->inorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- postorder -----\n");
+    tree->postorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- breadth -----\n");
+    tree->breadth(tree, tree->_root);
+    printf("\n");
+
+    printf("----- right priority -----\n");
+    tree->order(tree, true);
+
+    printf("----- preorder(right) -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- inorder(right) -----\n");
+    tree->inorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- postorder(right) -----\n");
+    tree->postorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- breadth(right) -----\n");
+    tree->breadth(tree, tree->_root);
+    printf("\n");
+
+
+    printf("----- left priority -----\n");
+    tree->order(tree, false);
+    printf("----- preorder -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        // delete
+        tree->delete(tree, &temp);
+
+        printf("delete = ");
+        tree->print_obj(&temp);
+        printf("size = %2d : ", tree->size(tree));
+        tree->preorder(tree, tree->_root);
+        printf("\n");
+    }
+
+    if(tree->empty(tree))
+    {
+        printf("----- empty -----\n");
+    }
+
+    tree_free(&tree);
+}
+
+static bool tree_rb_check_color(struct _tree *self, struct _tree_node* root, int black_num, int black_num_expected)
+{
+    if(root == NULL)
+    {
+        if(black_num != black_num_expected)
+        {
+            printf("black_num != black_num_expected\n");
+            return false;
+        }
+        return true;
+    }
+
+    if(root->color == RBT_BLACK)
+    {
+        black_num++;
+    }
+
+    if(root->color == RBT_RED && root->parent && root->parent->color == RBT_RED)
+    {
+        printf("The red node is adjacent to the red node\n");
+        return false;
+    }
+    return tree_rb_check_color(self, root->left, black_num, black_num_expected) && 
+        tree_rb_check_color(self, root->right, black_num, black_num_expected);
+}
+
+static bool tree_rb_check(struct _tree* self)
+{
+    assert(self != NULL);
+    if(self->_root == NULL)
+    {
+        return true;
+    }
+
+    if(self->_root->color != RBT_BLACK)
+    {
+        printf("self->_root->color != RBT_BLACK\n");
+        return false;
+    }
+
+    int black_num_expected = 0;
+    struct _tree_node* root = self->_root;
+    while(root)
+    {
+        if(root->color == RBT_BLACK)
+        {
+            black_num_expected++;
+        }
+        root = root->left;
+    }
+    return tree_rb_check_color(self, self->_root, 0, black_num_expected);
+}
+
+/**
+ * @brief 
+ */
+void test_rbtree_num(void)
+{
+    uint32_t i = 0;
+    // int data[] = { 2,1,3,4};
+    // int data[] = { 1,2,3,4,5,6};
+    // int data[] = { 5,2,3,1,7,8,6 };
+    int data[] = { 5,2,3,1,7,8,6,4,9,10,12,11,15,14,13 };
+    int temp = 0;
+    uint32_t len = sizeof(data) / sizeof(data[0]);
+
+    tree_t tree = tree_new();
+    tree_rb_init(tree, sizeof(int));
+    tree->print_obj = print_num;
+    tree->compare = compare_num;
+
+    printf("\n\n----- demo_rbtree_num -----\n");
+
+    printf("----- insert -----\n");
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        tree->insert(tree, &temp);
+
+        printf("insert = ");
+        tree->print_obj(&temp);
+        printf("size = %2d : ", tree->size(tree));
+        tree->preorder(tree, tree->_root);
+        printf("\n");
+
+        if(true != tree_rb_check(tree))
+        {
+            printf("----- rb_check_error -----\n");
+            return;
+        }
+    }
+
+    printf("----- max -----\n");
+    tree->max(tree, &temp);
+    tree->print_obj(&temp);
+    printf("\n");
+
+    printf("----- min -----\n");
+    tree->min(tree, &temp);
+    tree->print_obj(&temp);
+    printf("\n");
+
+    printf("----- tree -----\n");
+    tree->clear(tree);
+    if(tree->empty(tree))
+    {
+        printf("----- empty -----\n");
+    }
+    printf("----- insert -----\n");
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        tree->insert(tree, &temp);
+    }
+
+    printf("----- preorder -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- inorder -----\n");
+    tree->inorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- postorder -----\n");
+    tree->postorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- breadth -----\n");
+    tree->breadth(tree, tree->_root);
+    printf("\n");
+
+    printf("----- right priority -----\n");
+    tree->order(tree, true);
+
+    printf("----- preorder(right) -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- inorder(right) -----\n");
+    tree->inorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- postorder(right) -----\n");
+    tree->postorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- breadth(right) -----\n");
+    tree->breadth(tree, tree->_root);
+    printf("\n");
+
+#if 1
+    printf("----- left priority -----\n");
+    tree->order(tree, false);
+    printf("----- preorder -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        printf("delete = ");
+        tree->print_obj(&temp);
+
+        // delete
+        tree->delete(tree, &temp);
+
+        printf("size = %2d : ", tree->size(tree));
+        tree->preorder(tree, tree->_root);
+        printf("\n");
+
+        if(true != tree_rb_check(tree))
+        {
+            printf("----- rb_check_error -----\n");
+            return;
+        }
+    }
+
+    if(tree->empty(tree))
+    {
+        printf("----- empty -----\n");
+    }
+#endif
+    tree_free(&tree);
+}
+
+/**
+ * @brief 
+ */
+void test_rbtree_struct(void)
+{
+    uint32_t i = 0;
+    struct _student data[] = {
+        {"zhao", 1001},{"qian", 1002}, {"sun", 1003}, {"li", 1004},
+        "zhou", 1005, "wu", 1006, "zheng", 1007, "wang", 1008,
+    };
+    struct _student temp = {0};
+    uint32_t len = sizeof(data) / sizeof(data[0]);
+
+    tree_t tree = tree_new();
+    tree_rb_init(tree, sizeof(struct _student));
+    tree->print_obj = print_struct;
+    tree->compare = compare_struct;
+
+    printf("\n\n----- demo_rbtree_struct -----\n");
+
+    printf("----- insert -----\n");
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        tree->insert(tree, &temp);
+
+        printf("insert = ");
+        tree->print_obj(&temp);
+        printf("size = %2d : ", tree->size(tree));
+        tree->preorder(tree, tree->_root);
+        printf("\n");
+
+        if(true != tree_rb_check(tree))
+        {
+            printf("----- rb_check_error -----\n");
+            return;
+        }
+    }
+
+    printf("----- max -----\n");
+    tree->max(tree, &temp);
+    tree->print_obj(&temp);
+    printf("\n");
+
+    printf("----- min -----\n");
+    tree->min(tree, &temp);
+    tree->print_obj(&temp);
+    printf("\n");
+
+    printf("----- tree -----\n");
+    tree->clear(tree);
+    if(tree->empty(tree))
+    {
+        printf("----- empty -----\n");
+    }
+    printf("----- insert -----\n");
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        tree->insert(tree, &temp);
+    }
+
+    printf("----- preorder -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- inorder -----\n");
+    tree->inorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- postorder -----\n");
+    tree->postorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- breadth -----\n");
+    tree->breadth(tree, tree->_root);
+    printf("\n");
+
+    printf("----- right priority -----\n");
+    tree->order(tree, true);
+
+    printf("----- preorder(right) -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- inorder(right) -----\n");
+    tree->inorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- postorder(right) -----\n");
+    tree->postorder(tree, tree->_root);
+    printf("\n");
+
+    printf("----- breadth(right) -----\n");
+    tree->breadth(tree, tree->_root);
+    printf("\n");
+
+#if 1
+    printf("----- left priority -----\n");
+    tree->order(tree, false);
+    printf("----- preorder -----\n");
+    tree->preorder(tree, tree->_root);
+    printf("\n");
+
+    for (i = 0; i < len; i++)
+    {
+        temp = data[i];
+        printf("delete = ");
+        tree->print_obj(&temp);
+
+        // delete
+        tree->delete(tree, &temp);
+
+        printf("size = %2d : ", tree->size(tree));
+        tree->preorder(tree, tree->_root);
+        printf("\n");
+
+        if(true != tree_rb_check(tree))
+        {
+            printf("----- rb_check_error -----\n");
+            return;
+        }
+    }
+
+    if(tree->empty(tree))
+    {
+        printf("----- empty -----\n");
+    }
+#endif
+    tree_free(&tree);
+}
+#endif
+
+void test_tree(void)
+{
+    // RUN_TEST(test_avltree_num);
+    // RUN_TEST(test_rbtree_num);
+    // RUN_TEST(test_rbtree_struct);
+}