diff -r 30d7ae76c76a -r b00c6ae1441a tests/test_tree.c
--- a/tests/test_tree.c	Mon Apr 14 19:36:43 2025 +0200
+++ b/tests/test_tree.c	Mon Apr 14 19:53:20 2025 +0200
@@ -1909,9 +1909,9 @@
         result |= cxTreeInsert(tree, "/home/foo/");
         CX_TEST_ASSERT(result == 0);
         CX_TEST_ASSERT(1 == cxTreeInsertArray(tree, "/home/foo/bar/", sizeof(const char*), 1));
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
         CX_TEST_ASSERT(0 != cxTreeInsert(tree, "newroot"));
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
 
         CX_TEST_ASSERT(talloc.alloc_total == 8);
         CX_TEST_ASSERT(talloc.free_total == 1); // the one that could not be added
@@ -1944,7 +1944,7 @@
                 "newroot"
         };
         CX_TEST_ASSERT(6 == cxTreeInsertArray(tree, paths, sizeof(const char*), 7));
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
 
         CX_TEST_ASSERT(talloc.alloc_total == 8);
         CX_TEST_ASSERT(talloc.free_total == 1); // the one that could not be added
@@ -1996,7 +1996,7 @@
         CX_TEST_ASSERT(0 == strcmp("/home/foo/", foo->path));
         CX_TEST_ASSERT(NULL != foo->parent);
         CX_TEST_ASSERT(0 == strcmp("/home/", foo->parent->path));
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
 
         CX_TEST_ASSERT(0 == cxTreeAddChild(tree, foo->parent, "/home/baz/"));
         tree_node_file *baz = cxTreeFind(tree, "/home/baz/");
@@ -2004,7 +2004,7 @@
         CX_TEST_ASSERT(0 == strcmp("/home/baz/", baz->path));
         CX_TEST_ASSERT(NULL != baz->parent);
         CX_TEST_ASSERT(0 == strcmp("/home/", baz->parent->path));
-        CX_TEST_ASSERT(tree->size == 7);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 7);
 
         tree_node_file *home = cxTreeFind(tree, "/home/");
         CX_TEST_ASSERT(NULL == cxTreeFindInSubtree(tree, "/usr/", foo, 0));
@@ -2017,10 +2017,10 @@
         share->path = "/usr/share/";
         tree_node_file *usr = cxTreeFind(tree, "/usr/");
         cxTreeAddChildNode(tree, usr, share);
-        CX_TEST_ASSERT(tree->size == 8);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 8);
 
         cxTreeRemoveSubtree(tree, foo);
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
         CX_TEST_ASSERT(foo->children == bar);
         CX_TEST_ASSERT(foo->last_child == bar);
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/home/foo/"));
@@ -2028,7 +2028,7 @@
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/home/bar/"));
 
         CX_TEST_ASSERT(0 == cxTreeRemoveNode(tree, usr, test_tree_remove_node_relink_mock));
-        CX_TEST_ASSERT(tree->size == 5);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 5);
         CX_TEST_ASSERT(usr->parent == NULL);
         CX_TEST_ASSERT(usr->children == NULL);
         CX_TEST_ASSERT(usr->last_child == NULL);
@@ -2087,7 +2087,7 @@
         CX_TEST_ASSERT(0 == strcmp("/home/foo/", foo->path));
         CX_TEST_ASSERT(NULL != foo->parent);
         CX_TEST_ASSERT(0 == strcmp("/home/", foo->parent->path));
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
 
         CX_TEST_ASSERT(0 == cxTreeAddChild(tree, foo->parent, "/home/baz/"));
         tree_node_file *baz = cxTreeFind(tree, "/home/baz/");
@@ -2095,7 +2095,7 @@
         CX_TEST_ASSERT(0 == strcmp("/home/baz/", baz->path));
         CX_TEST_ASSERT(NULL != baz->parent);
         CX_TEST_ASSERT(0 == strcmp("/home/", baz->parent->path));
-        CX_TEST_ASSERT(tree->size == 7);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 7);
 
         tree_node_file *home = cxTreeFind(tree, "/home/");
         CX_TEST_ASSERT(NULL == cxTreeFindInSubtree(tree, "/usr/", foo, 0));
@@ -2108,16 +2108,16 @@
         share->path = "/usr/share/";
         tree_node_file *usr = cxTreeFind(tree, "/usr/");
         cxTreeAddChildNode(tree, usr, share);
-        CX_TEST_ASSERT(tree->size == 8);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 8);
 
         cxTreeDestroySubtree(tree, foo);
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/home/foo/"));
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/home/foo/bar/"));
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/home/bar/"));
 
         CX_TEST_ASSERT(0 == cxTreeDestroyNode(tree, usr, test_tree_remove_node_relink_mock));
-        CX_TEST_ASSERT(tree->size == 5);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 5);
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/usr/"));
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/usr/lib/"));
         CX_TEST_ASSERT(NULL == cxTreeFind(tree, "/usr/share/"));
@@ -2160,12 +2160,12 @@
         void *root = tree->root;
         CX_TEST_ASSERT(0 != cxTreeRemoveNode(tree, root, NULL));
         CX_TEST_ASSERT(tree->root == root);
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
         CX_TEST_ASSERT(0 != cxTreeDestroyNode(tree, root, NULL));
         CX_TEST_ASSERT(tree->root == root);
-        CX_TEST_ASSERT(tree->size == 6);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 6);
         cxTreeRemoveSubtree(tree, root);
-        CX_TEST_ASSERT(tree->size == 0);
+        CX_TEST_ASSERT(cxTreeSize(tree) == 0);
         CX_TEST_ASSERT(tree->root == NULL);
         CX_TEST_ASSERT(cxTreeDepth(tree) == 0);
         cxTreeFree(tree);