feat(tree): started standard binary tree

test/tree/test_binary_tree.c

@@ -0,0 +1,32 @@
+#include "acutest.h"
+#include "vieter_tree.h"
+
+#define TEST_SIZE(tree, size) \
+    TEST_CHECK(vieter_tree_size(tree) == size); \
+    TEST_MSG("Size: %zu", vieter_tree_size(tree))
+
+void test_init() {
+    vieter_tree *tree = vieter_tree_init();
+    TEST_CHECK(tree != NULL);
+    TEST_SIZE(tree, 0);
+    /* vieter_tree_free(tree); */
+}
+
+void test_insert() {
+    vieter_tree *tree = vieter_tree_init();
+
+    for (uint64_t i = 0; i < 25; i++) {
+        TEST_CHECK(vieter_tree_insert(tree, i, NULL) == vieter_tree_ok);
+    }
+
+    void *out;
+
+    for (uint64_t i = 0; i < 25; i++) {
+        TEST_CHECK(vieter_tree_insert(tree, i, NULL) == vieter_tree_already_present);
+        TEST_CHECK(vieter_tree_search(&out, tree, i) == vieter_tree_ok);
+    }
+}
+
+TEST_LIST = {
+    {NULL, NULL}
+};