1 files changed, 71 insertions, 0 deletions
diff --git a/test/bio_meth_test.c b/test/bio_meth_test.c
new file mode 100644
index 0000000000..3eeafe3a23
--- /dev/null
+++ b/test/bio_meth_test.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2024 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/bio.h>
+#include "testutil.h"
+
+static int test_bio_meth(void)
+{
+    int i, ret = 0, id;
+    BIO_METHOD *meth1 = NULL, *meth2 = NULL, *meth3 = NULL;
+    BIO *membio = NULL, *bio1 = NULL, *bio2 = NULL, *bio3 = NULL;
+
+    id = BIO_get_new_index();
+    if (!TEST_int_eq(id, BIO_TYPE_START + 1))
+        goto err;
+
+    if (!TEST_ptr(meth1 = BIO_meth_new(id, "Method1"))
+        || !TEST_ptr(meth2 = BIO_meth_new(BIO_TYPE_NONE, "Method2"))
+        || !TEST_ptr(meth3 = BIO_meth_new(BIO_TYPE_NONE|BIO_TYPE_FILTER, "Method3"))
+        || !TEST_ptr(bio1 = BIO_new(meth1))
+        || !TEST_ptr(bio2 = BIO_new(meth2))
+        || !TEST_ptr(bio3 = BIO_new(meth3))
+        || !TEST_ptr(membio = BIO_new(BIO_s_mem())))
+        goto err;
+
+    BIO_set_next(bio3, bio2);
+    BIO_set_next(bio2, bio1);
+    BIO_set_next(bio1, membio);
+
+    /* Check that we get an error if we exhaust BIO_get_new_index() */
+    for (i = id + 1; i <= BIO_TYPE_MASK; ++i) {
+        if (!TEST_int_eq(BIO_get_new_index(), i))
+            goto err;
+    }
+    if (!TEST_int_eq(BIO_get_new_index(), -1))
+        goto err;
+
+    /* test searching works */
+    if (!TEST_ptr_eq(BIO_find_type(bio3, BIO_TYPE_MEM), membio)
+        || !TEST_ptr_eq(BIO_find_type(bio3, id), bio1))
+        goto err;
+
+    /* Check searching for BIO_TYPE_NONE returns NULL */
+    if (!TEST_ptr_null(BIO_find_type(bio3, BIO_TYPE_NONE)))
+        goto err;
+    /* Check searching for BIO_TYPE_NONE + BIO_TYPE_FILTER works */
+    if (!TEST_ptr_eq(BIO_find_type(bio3, BIO_TYPE_FILTER), bio3))
+        goto err;
+    ret = 1;
+err:
+    BIO_free(membio);
+    BIO_free(bio3);
+    BIO_free(bio2);
+    BIO_free(bio1);
+    BIO_meth_free(meth3);
+    BIO_meth_free(meth2);
+    BIO_meth_free(meth1);
+    return ret;
+}
+
+int setup_tests(void)
+{
+    ADD_TEST(test_bio_meth);
+    return 1;
+}