109 lines
3.5 KiB
Nim
109 lines
3.5 KiB
Nim
import std/sequtils
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import std/sugar
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import std/random
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import std/strutils
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import std/math
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import pkg/questionable/results
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import pkg/constantine/math/arithmetic
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import pkg/constantine/math/io/io_fields
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import pkg/poseidon2/io
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import pkg/poseidon2
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import pkg/chronos
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import pkg/codex/stores/cachestore
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import pkg/codex/chunker
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import pkg/codex/stores
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import pkg/codex/blocktype as bt
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import pkg/codex/contracts/requests
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import pkg/codex/contracts
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import pkg/codex/merkletree
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import pkg/codex/stores/cachestore
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import pkg/codex/slots/sampler/utils
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import ../../asynctest
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import ../helpers
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import ../examples
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import ../merkletree/helpers
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import ./provingtestenv
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asyncchecksuite "Test proof sampler utils":
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let knownIndices: seq[Natural] = @[57, 82, 49]
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var
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env: ProvingTestEnvironment
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slotRoot: Poseidon2Hash
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numCells: Natural
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numCellsPadded: Natural
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setup:
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env = await createProvingTestEnvironment()
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slotRoot = env.slotRoots[datasetSlotIndex]
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numCells = cellsPerSlot
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numCellsPadded = numCells.nextPowerOfTwo
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teardown:
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reset(env)
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test "Extract low bits":
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proc extract(value: uint64, nBits: int): uint64 =
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let big = toF(value).toBig()
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return extractLowBits(big, nBits)
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check:
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extract(0x88, 4) == 0x8.uint64
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extract(0x88, 7) == 0x8.uint64
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extract(0x9A, 5) == 0x1A.uint64
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extract(0x9A, 7) == 0x1A.uint64
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extract(0x1248, 10) == 0x248.uint64
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extract(0x1248, 12) == 0x248.uint64
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extract(0x1248306A560C9AC0.uint64, 10) == 0x2C0.uint64
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extract(0x1248306A560C9AC0.uint64, 12) == 0xAC0.uint64
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extract(0x1248306A560C9AC0.uint64, 50) == 0x306A560C9AC0.uint64
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extract(0x1248306A560C9AC0.uint64, 52) == 0x8306A560C9AC0.uint64
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test "Can find single slot-cell index":
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proc slotCellIndex(i: Natural): Natural =
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return cellIndex(env.challengeNoPad, slotRoot, numCellsPadded, i)
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proc getExpectedIndex(i: int): Natural =
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let
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numberOfCellsInSlot = (bytesPerBlock * numberOfSlotBlocks) div DefaultCellSize.uint64.int
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numberOfCellsInSlotPadded = numberOfCellsInSlot.nextPowerOfTwo
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hash = Sponge.digest(@[slotRoot, env.challengeNoPad, toF(i)], rate = 2)
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return int(extractLowBits(hash.toBig(), ceilingLog2(numberOfCellsInSlotPadded)))
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check:
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slotCellIndex(1) == getExpectedIndex(1)
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slotCellIndex(1) == knownIndices[0]
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slotCellIndex(2) == getExpectedIndex(2)
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slotCellIndex(2) == knownIndices[1]
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slotCellIndex(3) == getExpectedIndex(3)
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slotCellIndex(3) == knownIndices[2]
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test "Can find sequence of slot-cell indices":
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proc slotCellIndices(n: int): seq[Natural] =
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cellIndices(env.challengeNoPad, slotRoot, numCellsPadded, n)
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proc getExpectedIndices(n: int): seq[Natural] =
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return collect(newSeq, (for i in 1..n: cellIndex(env.challengeNoPad, slotRoot, numCellsPadded, i)))
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check:
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slotCellIndices(3) == getExpectedIndices(3)
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slotCellIndices(3) == knownIndices
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for (input, expected) in [(10, 0), (31, 0), (32, 1), (63, 1), (64, 2)]:
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test "Can get slotBlockIndex from slotCellIndex (" & $input & " -> " & $expected & ")":
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let slotBlockIndex = toBlockIdx(input, numCells = 32)
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check:
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slotBlockIndex == expected
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for (input, expected) in [(10, 10), (31, 31), (32, 0), (63, 31), (64, 0)]:
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test "Can get blockCellIndex from slotCellIndex (" & $input & " -> " & $expected & ")":
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let blockCellIndex = toBlockCellIdx(input, numCells = 32)
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check:
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blockCellIndex == expected
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