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tests: Add fuzzing harness for functions in timedata.h

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practicalswift 2020-03-23 14:18:07 +00:00
parent a8695db785
commit 43ff0d91f8
2 changed files with 36 additions and 0 deletions
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7
src/Makefile.test.include
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@ -98,6 +98,7 @@ FUZZ_TARGETS = \
test/fuzz/string \
test/fuzz/strprintf \
test/fuzz/sub_net_deserialize \
test/fuzz/timedata \
test/fuzz/transaction \
test/fuzz/tx_in \
test/fuzz/tx_in_deserialize \
@ -853,6 +854,12 @@ test_fuzz_sub_net_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_sub_net_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_sub_net_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_timedata_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_timedata_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_timedata_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_timedata_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_timedata_SOURCES = $(FUZZ_SUITE) test/fuzz/timedata.cpp
test_fuzz_transaction_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_transaction_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_transaction_LDADD = $(FUZZ_SUITE_LD_COMMON)

29
src/test/fuzz/timedata.cpp Normal file
View file

@ -0,0 +1,29 @@
// 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 <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <timedata.h>
#include <cstdint>
#include <string>
#include <vector>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const unsigned int max_size = fuzzed_data_provider.ConsumeIntegralInRange<unsigned int>(0, 1000);
// Divide by 2 to avoid signed integer overflow in .median()
const int64_t initial_value = fuzzed_data_provider.ConsumeIntegral<int64_t>() / 2;
CMedianFilter<int64_t> median_filter{max_size, initial_value};
while (fuzzed_data_provider.remaining_bytes() > 0) {
(void)median_filter.median();
assert(median_filter.size() > 0);
assert(static_cast<size_t>(median_filter.size()) == median_filter.sorted().size());
assert(static_cast<unsigned int>(median_filter.size()) <= max_size || max_size == 0);
// Divide by 2 to avoid signed integer overflow in .median()
median_filter.input(fuzzed_data_provider.ConsumeIntegral<int64_t>() / 2);
}
}