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tests: Add fuzzing harness for functions/classes in span.h

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This commit is contained in:
practicalswift 2020-03-27 21:12:28 +00:00
parent 9718f38f54
commit f205cf7fef
2 changed files with 46 additions and 0 deletions
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7
src/Makefile.test.include
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@ -100,6 +100,7 @@ FUZZ_TARGETS = \
test/fuzz/service_deserialize \
test/fuzz/signature_checker \
test/fuzz/snapshotmetadata_deserialize \
test/fuzz/span \
test/fuzz/spanparsing \
test/fuzz/string \
test/fuzz/strprintf \
@ -872,6 +873,12 @@ test_fuzz_snapshotmetadata_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_snapshotmetadata_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_snapshotmetadata_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_span_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_span_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_span_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_span_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_span_SOURCES = $(FUZZ_SUITE) test/fuzz/span.cpp
test_fuzz_spanparsing_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_spanparsing_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_spanparsing_LDADD = $(FUZZ_SUITE_LD_COMMON)

39
src/test/fuzz/span.cpp Normal file
View file

@ -0,0 +1,39 @@
// 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 <span.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <string>
#include <vector>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
std::string str = fuzzed_data_provider.ConsumeBytesAsString(32);
const Span<const char> span = MakeSpan(str);
(void)span.data();
(void)span.begin();
(void)span.end();
if (span.size() > 0) {
const std::ptrdiff_t idx = fuzzed_data_provider.ConsumeIntegralInRange<std::ptrdiff_t>(0U, span.size() - 1U);
(void)span.first(idx);
(void)span.last(idx);
(void)span.subspan(idx);
(void)span.subspan(idx, span.size() - idx);
(void)span[idx];
}
std::string another_str = fuzzed_data_provider.ConsumeBytesAsString(32);
const Span<const char> another_span = MakeSpan(another_str);
assert((span <= another_span) != (span > another_span));
assert((span == another_span) != (span != another_span));
assert((span >= another_span) != (span < another_span));
}