fuzz: Add coverage for CDataStream consumer

src/Makefile.test.include

@@ -210,6 +210,7 @@ test_fuzz_fuzz_SOURCES = \
  test/fuzz/crypto_hkdf_hmac_sha256_l32.cpp \
  test/fuzz/crypto_poly1305.cpp \
  test/fuzz/cuckoocache.cpp \
+ test/fuzz/data_stream.cpp \
  test/fuzz/decode_tx.cpp \
  test/fuzz/descriptor_parse.cpp \
  test/fuzz/deserialize.cpp \

src/test/fuzz/data_stream.cpp

@@ -0,0 +1,25 @@
+// Copyright (c) 2020 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 <addrman.h>
+#include <net.h>
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/fuzz.h>
+#include <test/fuzz/util.h>
+
+#include <cstdint>
+#include <vector>
+
+void initialize_data_stream_addr_man()
+{
+    InitializeFuzzingContext();
+}
+
+FUZZ_TARGET_INIT(data_stream_addr_man, initialize_data_stream_addr_man)
+{
+    FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
+    CDataStream data_stream = ConsumeDataStream(fuzzed_data_provider);
+    CAddrMan addr_man;
+    CAddrDB::Read(addr_man, data_stream);
+}