diff -r 6f9d97a53d67 -r 6d3909bf1609 test/test_tree.c
--- a/test/test_tree.c	Sat Apr 16 09:10:10 2022 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,169 +0,0 @@
-/*
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
- *
- * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *   1. Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *
- *   2. Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in the
- *      documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "cx/tree.h"
-#include "test_config.h"
-
-#include <stddef.h>
-
-typedef struct TestNode TestNode;
-
-struct TestNode {
-    TestNode *parent;
-    TestNode *prev;
-    TestNode *next;
-    
-    TestNode *children_begin;
-    TestNode *children_end;
-};
-
-void test_tree_add_sibling(void) {
-    // prepare test tree
-    TestNode root;
-    memset(&root, 0, sizeof(TestNode));
-    
-    TestNode a;
-    memset(&a, 0, sizeof(TestNode));
-    root.children_begin = &a;
-    root.children_end = &a;
-    a.parent = &root;
-
-    // new test nodes
-    TestNode b;
-    memset(&b, 0, sizeof(TestNode));
-    TestNode c;
-    memset(&c, 0, sizeof(TestNode));
-    
-    // test
-    cx_tree_add_sibling(&a, offsetof(TestNode, prev), offsetof(TestNode, next), offsetof(TestNode, parent), &b);
-    CU_ASSERT_PTR_EQUAL(b.parent, &root)
-    CU_ASSERT_PTR_EQUAL(b.prev, &a)
-    CU_ASSERT_PTR_NULL(b.next)
-    CU_ASSERT_PTR_EQUAL(a.next, &b)
-
-    cx_tree_add_sibling(&a, -1, offsetof(TestNode, next), -1, &c);
-    CU_ASSERT_PTR_NULL(c.parent)
-    CU_ASSERT_PTR_NULL(c.prev)
-    CU_ASSERT_PTR_NULL(c.next)
-    CU_ASSERT_PTR_EQUAL(b.next, &c)
-}
-
-void test_tree_add_child(void) {
-    // prepare test tree
-    TestNode root;
-    memset(&root, 0, sizeof(TestNode));
-    
-    TestNode a;
-    memset(&a, 0, sizeof(TestNode));
-    TestNode b;
-    memset(&b, 0, sizeof(TestNode));
-    TestNode c;
-    memset(&c, 0, sizeof(TestNode));
-    TestNode a1;
-    memset(&a1, 0, sizeof(TestNode));
-    
-    // test
-    cx_tree_add_child(
-            (void **) &root.children_begin,
-            (void **) &root.children_end,
-            offsetof(TestNode, prev),
-            offsetof(TestNode, next),
-            &a,
-            offsetof(TestNode, parent),
-            &root);
-    CU_ASSERT_PTR_EQUAL(root.children_begin, &a)
-    CU_ASSERT_PTR_EQUAL(root.children_end, &a)
-    CU_ASSERT_PTR_EQUAL(a.parent, &root)
-    CU_ASSERT_PTR_NULL(a.prev)
-    CU_ASSERT_PTR_NULL(a.next)
-
-    cx_tree_add_child(
-            (void **) &root.children_begin,
-            (void **) &root.children_end,
-            offsetof(TestNode, prev),
-            offsetof(TestNode, next),
-            &b,
-            offsetof(TestNode, parent),
-            &root);
-    CU_ASSERT_PTR_NOT_NULL(root.children_begin)
-    CU_ASSERT_PTR_EQUAL(root.children_begin->next, &b)
-    CU_ASSERT_PTR_EQUAL(root.children_end, &b)
-    CU_ASSERT_PTR_EQUAL(b.parent, &root)
-    CU_ASSERT_PTR_EQUAL(b.prev, &a)
-
-    cx_tree_add_child(
-            (void **) &root.children_begin,
-            NULL,
-            -1,
-            offsetof(TestNode, next),
-            &c,
-            -1,
-            &root);
-    CU_ASSERT_PTR_EQUAL(root.children_end, &b) // children_end unchanged
-    CU_ASSERT_PTR_EQUAL(b.next, &c)
-    CU_ASSERT_PTR_NULL(c.prev)
-    CU_ASSERT_PTR_NULL(c.next)
-    CU_ASSERT_PTR_NULL(c.parent)
-
-    cx_tree_add_child(
-            (void **) &a.children_begin,
-            (void **) &a.children_end,
-            offsetof(TestNode, prev),
-            offsetof(TestNode, next),
-            &a1,
-            offsetof(TestNode, parent),
-            &a);
-    CU_ASSERT_PTR_EQUAL(a.children_begin, &a1);
-    CU_ASSERT_PTR_EQUAL(a1.parent, &a);
-    CU_ASSERT_PTR_NOT_NULL(root.children_begin)
-    CU_ASSERT_PTR_EQUAL(root.children_begin->children_begin, &a1)
-}
-
-int main() {
-    CU_pSuite suite = NULL;
-
-    if (CUE_SUCCESS != CU_initialize_registry()) {
-        return CU_get_error();
-    }
-
-    suite = CU_add_suite("tree suite", NULL, NULL);
-
-    cu_add_test(suite, test_tree_add_sibling);
-    cu_add_test(suite, test_tree_add_child);
-
-    CU_basic_set_mode(UCX_CU_BRM);
-
-    int exitcode;
-    if (CU_basic_run_tests()) {
-        exitcode = CU_get_error();
-    } else {
-        exitcode = CU_get_number_of_failures() == 0 ? 0 : 1;
-    }
-    CU_cleanup_registry();
-    return exitcode;
-}