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Add root hash to Merkle DAG

This commit is contained in:
Mark Spanbroek 2021-01-12 13:43:23 +01:00 committed by markspanbroek
parent c795c698fe
commit ecc4e50d28
4 changed files with 20 additions and 0 deletions
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1
dagger.nimble
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@ -4,5 +4,6 @@ description = "Dagger Storage Network"
license = "MIT" license = "MIT"
requires "nim >= 1.4.2 & < 2.0.0" requires "nim >= 1.4.2 & < 2.0.0"
requires "libp2p >= 0.0.2 & < 0.1.0"
requires "chronos >= 2.5.2 & < 3.0.0" requires "chronos >= 2.5.2 & < 3.0.0"
requires "asynctest >= 0.2.1 & < 0.3.0" requires "asynctest >= 0.2.1 & < 0.3.0"

7
dagger/merkledag.nim
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@ -1,3 +1,10 @@
import pkg/libp2p/multihash
export multihash
type type
MerkleDag* = object MerkleDag* = object
data*: seq[byte] data*: seq[byte]
proc rootHash*(dag: MerkleDag): MultiHash =
MultiHash.digest("sha2-256", dag.data).get()

11
tests/dagger/testMerkleDag.nim Normal file
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@ -0,0 +1,11 @@
import std/unittest
import pkg/dagger/merkledag
suite "Merkle DAG":
test "has a root hash":
let dag1 = MerkleDag(data: @[1'u8, 2'u8, 3'u8])
let dag2 = MerkleDag(data: @[4'u8, 5'u8, 6'u8])
let dag3 = MerkleDag(data: @[4'u8, 5'u8, 6'u8])
check dag1.rootHash != dag2.rootHash
check dag2.rootHash == dag3.rootHash

1
tests/testAll.nim
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@ -1,3 +1,4 @@
import ./dagger/testMerkleDag
import ./dagger/testChunking import ./dagger/testChunking
import ./dagger/testDagger import ./dagger/testDagger