1 files changed, 110 insertions, 0 deletions
diff --git a/libavutil/tree-test.c b/libavutil/tree-test.c
new file mode 100644
index 0000000000..f93e53409d
--- /dev/null
+++ b/libavutil/tree-test.c
@@ -0,0 +1,110 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "tree.c"
+
+#include <stdint.h>
+
+#include "common.h"
+#include "lfg.h"
+#include "log.h"
+
+static int check(AVTreeNode *t)
+{
+    if (t) {
+        int left  = check(t->child[0]);
+        int right = check(t->child[1]);
+
+        if (left > 999 || right > 999)
+            return 1000;
+        if (right - left != t->state)
+            return 1000;
+        if (t->state > 1 || t->state < -1)
+            return 1000;
+        return FFMAX(left, right) + 1;
+    }
+    return 0;
+}
+
+static void print(AVTreeNode *t, int depth)
+{
+    int i;
+    for (i = 0; i < depth * 4; i++)
+        av_log(NULL, AV_LOG_ERROR, " ");
+    if (t) {
+        av_log(NULL, AV_LOG_ERROR, "Node %p %2d %p\n", t, t->state, t->elem);
+        print(t->child[0], depth + 1);
+        print(t->child[1], depth + 1);
+    } else
+        av_log(NULL, AV_LOG_ERROR, "NULL\n");
+}
+
+static int cmp(void *a, const void *b)
+{
+    return (uint8_t *) a - (const uint8_t *) b;
+}
+
+int main(void)
+{
+    int i;
+    AVTreeNode *root = NULL, *node = NULL;
+    AVLFG prng;
+
+    av_lfg_init(&prng, 1);
+
+    for (i = 0; i < 10000; i++) {
+        AVTreeNode *node2 = NULL;
+        intptr_t j = av_lfg_get(&prng) % 86294;
+        void *ret, *jj = (void *)(j + 1);
+
+        while (ret = av_tree_find(root, jj, cmp, NULL)) {
+            j  = av_lfg_get(&prng) % 86294;
+            jj = (void *)(j + 1);
+        }
+
+        if (check(root) > 999) {
+            av_log(NULL, AV_LOG_ERROR, "FATAL error %d\n", i);
+            print(root, 0);
+            return 1;
+        }
+
+        if (!node)
+            node = av_tree_node_alloc();
+        if (!node) {
+            av_log(NULL, AV_LOG_ERROR, "Memory allocation failure.\n");
+            return 1;
+        }
+        av_tree_insert(&root, jj, cmp, &node);
+
+        while (ret = av_tree_find(root, jj, cmp, NULL)) {
+            j  = av_lfg_get(&prng) % 86294;
+            jj = (void *)(j + 1);
+        }
+
+        ret = av_tree_insert(&root, jj, cmp, &node2);
+        if (ret != jj)
+            av_tree_destroy(node2);
+        ret = av_tree_find(root, jj, cmp, NULL);
+        if (ret)
+            av_log(NULL, AV_LOG_ERROR, "removal failure %d\n", i);
+    }
+
+    av_tree_destroy(root);
+
+    return 0;
+}