tests: Add common Consume* fuzzing functions

Author: practicalswift

src/test/fuzz/util.h

@@ -7,9 +7,11 @@
 
 #include <attributes.h>
 #include <optional.h>
+#include <script/script.h>
 #include <serialize.h>
 #include <streams.h>
 #include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/fuzz.h>
 #include <version.h>
 
 #include <cstdint>
@@ -36,4 +38,20 @@ NODISCARD inline Optional<T> ConsumeDeserializable(FuzzedDataProvider& fuzzed_da
     return obj;
 }
 
+NODISCARD inline opcodetype ConsumeOpcodeType(FuzzedDataProvider& fuzzed_data_provider) noexcept
+{
+    return static_cast<opcodetype>(fuzzed_data_provider.ConsumeIntegralInRange<uint32_t>(0, MAX_OPCODE));
+}
+
+NODISCARD inline CScript ConsumeScript(FuzzedDataProvider& fuzzed_data_provider) noexcept
+{
+    const std::vector<uint8_t> b = ConsumeRandomLengthByteVector(fuzzed_data_provider);
+    return {b.begin(), b.end()};
+}
+
+NODISCARD inline CScriptNum ConsumeScriptNum(FuzzedDataProvider& fuzzed_data_provider) noexcept
+{
+    return CScriptNum{fuzzed_data_provider.ConsumeIntegral<int64_t>()};
+}
+
 #endif // BITCOIN_TEST_FUZZ_UTIL_H