128 lines
3.8 KiB
Nim
128 lines
3.8 KiB
Nim
# Nimbus
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# Copyright (c) 2019-2023 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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import
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std/[strutils, tables, os, json],
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unittest2,
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stew/byteutils,
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../nimbus/core/pow/difficulty,
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../nimbus/constants,
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../nimbus/common/common,
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./test_helpers
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type
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Tester = object
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parentTimestamp: int64
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parentDifficulty: Uint256
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parentUncles: Hash256
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currentTimestamp: int64
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currentBlockNumber: Uint256
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currentDifficulty: Uint256
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Tests = Table[string, Tester]
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const
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inputPath = "tests" / "fixtures" / "eth_tests" / "DifficultyTests"
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proc hexOrInt64(data: JsonNode, key: string, hex: static[bool]): int64 =
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when hex:
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getHexadecimalInt data[key]
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else:
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int64(parseInt data[key].getStr)
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proc hexOrInt256(data: JsonNode, key: string, hex: static[bool]): Uint256 =
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when hex:
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UInt256.fromHex data[key].getStr
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else:
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parse(data[key].getStr, Uint256)
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proc parseHash(data: string): Hash256 =
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case data
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of "0x00": result = EMPTY_UNCLE_HASH
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of "0x01": result.data[0] = 1.byte
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else:
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doAssert(false, "invalid uncle hash")
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proc parseTests(testData: JSonNode): Tests =
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const hex = true
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result = initTable[string, Tester]()
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var t: Tester
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for title, data in testData:
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t.parentTimestamp = hexOrInt64(data, "parentTimestamp", hex)
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t.parentDifficulty = hexOrInt256(data, "parentDifficulty", hex)
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let pu = data.fields.getOrDefault("parentUncles")
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if pu.isNil:
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t.parentUncles = EMPTY_UNCLE_HASH
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else:
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t.parentUncles = parseHash(pu.getStr)
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t.currentTimestamp = hexOrInt64(data, "currentTimestamp", hex)
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t.currentBlockNumber = hexOrInt256(data, "currentBlockNumber", hex)
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t.currentDifficulty = hexOrInt256(data, "currentDifficulty", hex)
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result[title] = t
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proc calculator(revision: string, timestamp: EthTime, header: BlockHeader): DifficultyInt =
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case revision
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of "Homestead": result = calcDifficultyHomestead(timestamp, header)
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of "GrayGlacier": result = calcDifficultyGrayGlacier(timestamp, header)
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of "Frontier": result = calcDifficultyFrontier(timestamp, header)
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of "Berlin": result = calcDifficultyMuirGlacier(timestamp, header)
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of "Constantinople": result = calcDifficultyConstantinople(timestamp, header)
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of "Byzantium": result = calcDifficultyByzantium(timestamp, header)
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of "ArrowGlacier": result = calcDifficultyArrowGlacier(timestamp, header)
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else:
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doAssert(false, "unknown revision: " & revision)
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proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus) =
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var fixture: JsonNode
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for _, child in fixtures:
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fixture = child
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break
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for revision, child in fixture:
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if revision == "_info":
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continue
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let tests = parseTests(child)
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for title, t in tests:
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let p = BlockHeader(
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difficulty : t.parentDifficulty,
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timestamp : EthTime(t.parentTimestamp),
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blockNumber: t.currentBlockNumber - 1,
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ommersHash : t.parentUncles
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)
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let timestamp = EthTime(t.currentTimeStamp)
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let diff = calculator(revision, timestamp, p)
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check diff == t.currentDifficulty
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template runTest() =
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var filenames: seq[string] = @[]
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for filename in walkDirRec(inputPath):
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if not filename.endsWith(".json"):
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continue
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filenames.add filename
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doAssert(filenames.len > 0)
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for fname in filenames:
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let filename = fname
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test fname.subStr(inputPath.len + 1):
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let fixtures = parseJson(readFile(filename))
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testFixture(fixtures, testStatusIMPL)
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proc difficultyMain*() =
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suite "DifficultyTest":
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runTest()
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when isMainModule:
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difficultyMain()
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