41 lines
1.1 KiB
Nim
41 lines
1.1 KiB
Nim
import
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testutils/fuzzing, faststreams/inputs, serialization/testing/tracing,
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../../beacon_chain/spec/datatypes/base
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export
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ssz, base, fuzzing
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template sszFuzzingTest*(T: type) =
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test:
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block:
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let input = unsafeMemoryInput(payload)
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let decoded = try: input.readValue(SSZ, T)
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except SSZError: break
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if input.len.get > 0:
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# Some unconsumed input remained, this is not a valid test case
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break
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let reEncoded = SSZ.encode(decoded)
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when T isnot SignedBeaconBlock:
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let hash = hash_tree_root(decoded)
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if payload != reEncoded:
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when hasSerializationTracing:
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# Run deserialization again to produce a seriazation trace
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# (this is useful for comparing with the initial deserialization)
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discard SSZ.decode(reEncoded, T)
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echo "Payload with len = ", payload.len
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echo payload
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echo "Re-encoided payload with len = ", reEncoded.len
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echo reEncoded
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when T isnot SignedBeaconBlock:
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echo "HTR: ", hash
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echo repr(decoded)
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doAssert false
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