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test: pin Export serialization size inventory

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This commit is contained in:
Nicholas Dudfield
2026-07-13 12:02:18 +07:00
parent c5edcdbbcd
commit 4a2ca38b7f
1 changed files with 92 additions and 0 deletions
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92
src/test/app/ExportResultBuilder_test.cpp
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@@ -29,6 +29,7 @@
#include <xrpl/protocol/TxFormats.h>
#include <xrpl/protocol/digest.h>
#include <array>
#include <cstring>
namespace ripple {
namespace test {
@@ -450,6 +451,96 @@ public:
BEAST_EXPECT(!ExportResultBuilder::signaturesFromWitness(witness));
}
void
testSerializedSizeInventory()
{
//@@start export-serialized-size-inventory
testcase("serialized size inventory");
auto const src = randomKeyPair(KeyType::secp256k1);
auto const dst = randomKeyPair(KeyType::secp256k1);
auto innerTx = makeExportedPayment(
calcAccountID(src.first), calcAccountID(dst.first));
innerTx.setFieldArray(sfMemos, STArray(sfMemos, 1));
STObject memo{sfMemo};
memo.setFieldVL(
sfMemoType,
Blob{
'x',
'a',
'h',
'a',
'u',
'-',
'e',
'x',
'p',
'o',
'r',
't',
'-',
'v',
'1'});
memo.setFieldVL(sfMemoData, Blob(45, 0xA5));
innerTx.peekFieldArray(sfMemos).emplace_back(std::move(memo));
std::array<std::uint8_t, 72> signatureBytes;
signatureBytes.fill(0x5A);
ExportResultBuilder::SignatureSnapshot signatures;
while (signatures.size() < STTx::maxMultiSigners())
{
auto const signer = randomKeyPair(KeyType::secp256k1);
signatures.emplace(
signer.first,
Buffer{signatureBytes.data(), signatureBytes.size()});
}
auto const multiSigned =
ExportResultBuilder::buildMultiSignedExportedTxn(
innerTx, signatures);
auto const witness = ExportResultBuilder::buildSignatureWitness(
makeHash("size-inventory-export"), signatures, 654);
STObject selfContained{sfGeneric};
selfContained.setFieldU16(sfTransactionType, ttEXPORT_SIGNATURES);
selfContained.setFieldU32(sfLedgerSequence, 654);
selfContained.setFieldH256(
sfTransactionHash, makeHash("size-inventory-export"));
auto const innerSerializer = innerTx.getSerializer();
SerialIter innerIter{innerSerializer.slice()};
selfContained.set(std::make_unique<STObject>(innerIter, sfExportedTxn));
selfContained.setFieldArray(
sfSigners, witness.getFieldArray(sfSigners));
auto const innerBytes = innerTx.getSerializer().size();
auto const multiSignedBytes = multiSigned.getSerializer().size();
auto const currentWitnessBytes = witness.getSerializer().size();
auto const selfContainedWitnessBytes =
selfContained.getSerializer().size();
constexpr std::size_t legacyShareBytes = 32 + 33 + 72;
log << "Export serialized-size inventory:\n"
<< " unsigned target + issuance Memo: " << innerBytes << "\n"
<< " 32-signer target: " << multiSignedBytes << "\n"
<< " current 32-signer witness: " << currentWitnessBytes << "\n"
<< " self-contained witness baseline: "
<< selfContainedWitnessBytes << "\n"
<< " one legacy share blob: " << legacyShareBytes << "\n"
<< " 32 legacy share blobs: "
<< legacyShareBytes * STTx::maxMultiSigners() << std::endl;
BEAST_EXPECT(signatures.size() == STTx::maxMultiSigners());
BEAST_EXPECT(
witness.getFieldArray(sfSigners).size() == STTx::maxMultiSigners());
BEAST_EXPECT(innerBytes == 163);
BEAST_EXPECT(multiSignedBytes == 4453);
BEAST_EXPECT(currentWitnessBytes == 4369);
BEAST_EXPECT(selfContainedWitnessBytes == 4497);
BEAST_EXPECT(legacyShareBytes * STTx::maxMultiSigners() == 4384);
//@@end export-serialized-size-inventory
}
void
run() override
{
@@ -461,6 +552,7 @@ public:
testAssemblesWitnessReferenceMetadata();
testSignatureWitnessRoundTrip();
testRejectsNonCanonicalWitnessSigner();
testSerializedSizeInventory();
}
};