1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/fuzz/hex.cpp b/src/test/fuzz/hex.cpp
new file mode 100644
index 0000000000..3bbf0084c2
--- /dev/null
+++ b/src/test/fuzz/hex.cpp
@@ -0,0 +1,43 @@
+// Copyright (c) 2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <core_io.h>
+#include <pubkey.h>
+#include <primitives/block.h>
+#include <rpc/util.h>
+#include <test/fuzz/fuzz.h>
+#include <uint256.h>
+#include <univalue.h>
+#include <util/strencodings.h>
+
+#include <cassert>
+#include <cstdint>
+#include <string>
+#include <vector>
+
+void initialize() {
+    static const ECCVerifyHandle verify_handle;
+}
+
+void test_one_input(const std::vector<uint8_t>& buffer)
+{
+    const std::string random_hex_string(buffer.begin(), buffer.end());
+    const std::vector<unsigned char> data = ParseHex(random_hex_string);
+    const std::string hex_data = HexStr(data);
+    if (IsHex(random_hex_string)) {
+        assert(ToLower(random_hex_string) == hex_data);
+    }
+    (void)IsHexNumber(random_hex_string);
+    uint256 result;
+    (void)ParseHashStr(random_hex_string, result);
+    (void)uint256S(random_hex_string);
+    try {
+        (void)HexToPubKey(random_hex_string);
+    } catch (const UniValue&) {
+    }
+    CBlockHeader block_header;
+    (void)DecodeHexBlockHeader(block_header, random_hex_string);
+    CBlock block;
+    (void)DecodeHexBlk(block, random_hex_string);
+}