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kernel: Add Block Header serialization method

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Add `btck_block_header_to_bytes` serialization method to serialize a
`btck_BlockHeader` into an 80-byte buffer using `SpanWriter` to ensure
zero-allocation serialization.
This commit is contained in:
yuvicc
2026-04-01 20:12:39 +05:30
parent 86662623ec
commit 1ad551281a
4 changed files with 40 additions and 0 deletions
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9
src/test/kernel/test_kernel.cpp
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@@ -682,6 +682,10 @@ BOOST_AUTO_TEST_CASE(btck_block_header_tests)
auto prev_hash = header.PrevHash();
BOOST_CHECK_EQUAL(byte_span_to_hex_string_reversed(prev_hash.ToBytes()), "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");
// Test round-trip serialization of block header
auto header_roundtrip{BlockHeader{header.ToBytes()}};
check_equal(header_roundtrip.ToBytes(), mainnet_block_1_header);
auto raw_block = hex_string_to_byte_vec("010000006fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000982051fd1e4ba744bbbe680e1fee14677ba1a3c3540bf7b1cdb606e857233e0e61bc6649ffff001d01e362990101000000010000000000000000000000000000000000000000000000000000000000000000ffffffff0704ffff001d0104ffffffff0100f2052a0100000043410496b538e853519c726a2c91e61ec11600ae1390813a627c66fb8be7947be63c52da7589379515d4e0a604f8141781e62294721166bf621e73a82cbf2342c858eeac00000000");
Block block{raw_block};
BlockHeader block_header{block.GetHeader()};
@@ -690,6 +694,11 @@ BOOST_AUTO_TEST_CASE(btck_block_header_tests)
BOOST_CHECK_EQUAL(block_header.Bits(), 0x1d00ffff);
BOOST_CHECK_EQUAL(block_header.Nonce(), 2573394689);
BOOST_CHECK_EQUAL(byte_span_to_hex_string_reversed(block_header.Hash().ToBytes()), "00000000839a8e6886ab5951d76f411475428afc90947ee320161bbf18eb6048");
// Verify header from block serializes to first 80 bytes of raw block
auto block_header_bytes = block_header.ToBytes();
BOOST_CHECK_EQUAL(block_header_bytes.size(), 80);
check_equal(block_header_bytes, std::span<const std::byte>(raw_block.data(), 80));
}
BOOST_AUTO_TEST_CASE(btck_block)