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58 lines
1.6 KiB
Nim
58 lines
1.6 KiB
Nim
import std/unittest
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import std/sequtils
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import std/random
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import pkg/poseidon2
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import pkg/poseidon2/sponge
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import pkg/questionable/results
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import pkg/codex/merkletree
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import pkg/codex/utils/poseidon2digest
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import ./helpers
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suite "Digest - MerkleTree":
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const KB = 1024
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test "Hashes chunks of data with sponge, and combines them in merkle root":
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let bytes = newSeqWith(64 * KB, rand(byte))
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var leaves: seq[Poseidon2Hash]
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for i in 0 ..< 32:
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let
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chunk = bytes[(i * 2 * KB) ..< ((i + 1) * 2 * KB)]
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digest = Sponge.digest(chunk, rate = 2)
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leaves.add(digest)
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let
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digest = Poseidon2Tree.digest(bytes, chunkSize = 2 * KB).tryGet
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spongeDigest = SpongeMerkle.digest(bytes, chunkSize = 2 * KB)
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codexPosTree = Poseidon2Tree.init(leaves).tryGet
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rootDigest = codexPosTree.root.tryGet
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check:
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bool(digest == spongeDigest)
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bool(digest == rootDigest)
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test "Handles partial chunk at the end":
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let bytes = newSeqWith(63 * KB, rand(byte))
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var leaves: seq[Poseidon2Hash]
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for i in 0 ..< 31:
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let
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chunk = bytes[(i * 2 * KB) ..< ((i + 1) * 2 * KB)]
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digest = Sponge.digest(chunk, rate = 2)
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leaves.add(digest)
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let partialChunk = bytes[(62 * KB) ..< (63 * KB)]
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leaves.add(Sponge.digest(partialChunk, rate = 2))
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let
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digest = Poseidon2Tree.digest(bytes, chunkSize = 2 * KB).tryGet
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spongeDigest = SpongeMerkle.digest(bytes, chunkSize = 2 * KB)
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codexPosTree = Poseidon2Tree.init(leaves).tryGet
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rootDigest = codexPosTree.root.tryGet
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check:
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bool(digest == spongeDigest)
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bool(digest == rootDigest)
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