1 files changed, 78 insertions, 0 deletions
diff --git a/t/unit-tests/u-reftable-tree.c b/t/unit-tests/u-reftable-tree.c
new file mode 100644
index 0000000000..bcf9061071
--- /dev/null
+++ b/t/unit-tests/u-reftable-tree.c
@@ -0,0 +1,78 @@
+/*
+Copyright 2020 Google LLC
+
+Use of this source code is governed by a BSD-style
+license that can be found in the LICENSE file or at
+https://developers.google.com/open-source/licenses/bsd
+*/
+
+#include "unit-test.h"
+#include "reftable/tree.h"
+
+static int t_compare(const void *a, const void *b)
+{
+	return (char *)a - (char *)b;
+}
+
+struct curry {
+	void **arr;
+	size_t len;
+};
+
+static void store(void *arg, void *key)
+{
+	struct curry *c = arg;
+	c->arr[c->len++] = key;
+}
+
+void test_reftable_tree__tree_search(void)
+{
+	struct tree_node *root = NULL;
+	void *values[11] = { 0 };
+	struct tree_node *nodes[11] = { 0 };
+	size_t i = 1;
+
+	/*
+	 * Pseudo-randomly insert the pointers for elements between
+	 * values[1] and values[10] (inclusive) in the tree.
+	 */
+	do {
+		nodes[i] = tree_insert(&root, &values[i], &t_compare);
+		cl_assert(nodes[i] != NULL);
+		i = (i * 7) % 11;
+	} while (i != 1);
+
+	for (i = 1; i < ARRAY_SIZE(nodes); i++) {
+		cl_assert_equal_p(&values[i], nodes[i]->key);
+		cl_assert_equal_p(nodes[i], tree_search(root, &values[i], &t_compare));
+	}
+
+	cl_assert(tree_search(root, values, t_compare) == NULL);
+	tree_free(root);
+}
+
+void test_reftable_tree__infix_walk(void)
+{
+	struct tree_node *root = NULL;
+	void *values[11] = { 0 };
+	void *out[11] = { 0 };
+	struct curry c = {
+		.arr = (void **) &out,
+	};
+	size_t i = 1;
+	size_t count = 0;
+
+	do {
+		struct tree_node *node = tree_insert(&root, &values[i], t_compare);
+		cl_assert(node != NULL);
+		i = (i * 7) % 11;
+		count++;
+	} while (i != 1);
+
+	infix_walk(root, &store, &c);
+	for (i = 1; i < ARRAY_SIZE(values); i++)
+		cl_assert_equal_p(&values[i], out[i - 1]);
+	cl_assert(out[i - 1] == NULL);
+	cl_assert_equal_i(c.len, count);
+	tree_free(root);
+}