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-rw-r--r--reftable/tree_test.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/reftable/tree_test.c b/reftable/tree_test.c
new file mode 100644
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--- /dev/null
+++ b/reftable/tree_test.c
@@ -0,0 +1,61 @@
+/*
+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 "tree.h"
+
+#include "basics.h"
+#include "record.h"
+#include "test_framework.h"
+#include "reftable-tests.h"
+
+static int test_compare(const void *a, const void *b)
+{
+ return (char *)a - (char *)b;
+}
+
+struct curry {
+ void *last;
+};
+
+static void check_increasing(void *arg, void *key)
+{
+ struct curry *c = arg;
+ if (c->last) {
+ EXPECT(test_compare(c->last, key) < 0);
+ }
+ c->last = key;
+}
+
+static void test_tree(void)
+{
+ struct tree_node *root = NULL;
+
+ void *values[11] = { NULL };
+ struct tree_node *nodes[11] = { NULL };
+ int i = 1;
+ struct curry c = { NULL };
+ do {
+ nodes[i] = tree_search(values + i, &root, &test_compare, 1);
+ i = (i * 7) % 11;
+ } while (i != 1);
+
+ for (i = 1; i < ARRAY_SIZE(nodes); i++) {
+ EXPECT(values + i == nodes[i]->key);
+ EXPECT(nodes[i] ==
+ tree_search(values + i, &root, &test_compare, 0));
+ }
+
+ infix_walk(root, check_increasing, &c);
+ tree_free(root);
+}
+
+int tree_test_main(int argc, const char *argv[])
+{
+ RUN_TEST(test_tree);
+ return 0;
+}