allow test_block_witness to run single test

stateless/test_block_witness.nim

@@ -2,7 +2,7 @@ import
   unittest2, os, json, strutils,
   eth/[common, rlp], eth/trie/[hexary, db, trie_defs],
   stew/byteutils, faststreams/input_stream,
-  ../tests/test_helpers,
+  ../tests/[test_helpers, test_config],
   ../nimbus/db/accounts_cache,
   ../stateless/[witness_from_tree, tree_from_witness]
 
@@ -97,8 +97,38 @@ proc testFixtureGST(node: JsonNode, testStatusIMPL: var TestStatus) =
 
   fixture["pre"].testBlockWitness(emptyRlpHash, testStatusIMPL)
 
-#suite "Block Witness":
-  #jsonTest("newBlockChainTests", "witnessBuilderBC", testFixtureBC)
-
+proc blockWitnessMain*(debugMode = false) =
+  if paramCount() == 0 or not debugMode:
+    # run all test fixtures
+    suite "Block Witness":
+      jsonTest("newBlockChainTests", "witnessBuilderBC", testFixtureBC)
     suite "Block Witness":
       jsonTest("GeneralStateTests", "witnessBuilderGST", testFixtureGST)
+  else:
+    # execute single test in debug mode
+    let config = getConfiguration()
+    if config.testSubject.len == 0:
+      echo "missing test subject"
+      quit(QuitFailure)
+
+    let folder = if config.legacy: "GeneralStateTests" else: "newGeneralStateTests"
+    let path = "tests" / "fixtures" / folder
+    let n = json.parseFile(path / config.testSubject)
+    var testStatusIMPL: TestStatus
+    if config.legacy:
+      testFixtureGST(n, testStatusIMPL)
+    else:
+      testFixtureBC(n, testStatusIMPL)
+
+when isMainModule:
+  var message: string
+
+  ## Processing command line arguments
+  if processArguments(message) != Success:
+    echo message
+    quit(QuitFailure)
+  else:
+    if len(message) > 0:
+      echo message
+      quit(QuitSuccess)
+  blockWitnessMain(true)

stateless/test_witness_keys.nim

@@ -1,9 +1,26 @@
 import
   randutils, stew/byteutils, random,
   eth/[common, rlp], eth/trie/[hexary, db],
-  faststreams/input_stream,
+  faststreams/input_stream, nimcrypto/[utils, sysrand],
   ../stateless/[witness_from_tree, tree_from_witness]
 
+proc randU256(): UInt256 =
+  var bytes: array[32, byte]
+  discard randomBytes(bytes[0].addr, sizeof(result))
+  result = UInt256.fromBytesBE(bytes)
+
+proc randNonce(): AccountNonce =
+  discard randomBytes(result.addr, sizeof(result))
+
+proc randHash(): Hash256 =
+  discard randomBytes(result.data[0].addr, sizeof(result))
+
+proc randAccount(): Account =
+  result.nonce = randNonce()
+  result.balance = randU256()
+  result.codeHash = randHash()
+  result.storageRoot = randHash()
+
 proc runTest(keyBytes: int, valBytes: int, numPairs: int) =
   var memDB = newMemoryDB()
   var trie = initHexaryTrie(memDB)

stateless/witness_from_tree.nim

@@ -1,9 +1,9 @@
 import
   stew/[byteutils, endians2],
-  nimcrypto/[keccak, hash], eth/rlp,
+  nimcrypto/[keccak, hash], eth/[common, rlp],
   eth/trie/[trie_defs, nibbles, db],
   faststreams/output_stream,
-  ./witness_types
+  ./witness_types, ../nimbus/constants
 
 type
   DB = TrieDatabaseRef
@@ -42,7 +42,7 @@ proc rlpListToBitmask(r: var Rlp): uint =
 proc writeU32(wb: var WitnessBuilder, x: uint32) =
   wb.output.append(toBytesBE(x))
 
-proc writeNibbles(wb: var WitnessBuilder; n: NibblesSeq) =
+proc writeNibbles(wb: var WitnessBuilder; n: NibblesSeq, withLen: bool = true) =
   let nibblesLen = n.len
   let numBytes = nibblesLen div 2 + nibblesLen mod 2
   var bytes: array[32, byte]
@@ -54,6 +54,7 @@ proc writeNibbles(wb: var WitnessBuilder; n: NibblesSeq) =
     else:
       bytes[pos div 2] = bytes[pos div 2] or (n[pos] shl 4)
 
+  if withLen:
     # write nibblesLen
     wb.output.append(nibblesLen.byte)
   # write nibbles
@@ -86,7 +87,7 @@ proc writeBranchNode(wb: var WitnessBuilder, mask: uint, depth: int, node: openA
   when defined(debugHash):
     wb.output.append(keccak(node).data)
 
-proc writeAccountNode(wb: var WitnessBuilder, node: openArray[byte], depth: int) =
+proc writeAccountNode(wb: var WitnessBuilder, acc: Account, nibbles: NibblesSeq, node: openArray[byte], depth: int) =
   # write type
   wb.output.append(AccountNodeType.byte)
   wb.writeU32(node.len.uint32)
@@ -95,6 +96,25 @@ proc writeAccountNode(wb: var WitnessBuilder, node: openArray[byte], depth: int)
   when defined(debugDepth):
     wb.output.append(depth.byte)
 
+  #EIP170_CODE_SIZE_LIMIT
+
+  doAssert(nibbles.len == 64 - depth)
+  let accountType = if acc.codeHash == blankStringHash or acc.storageRoot == emptyRlpHash: SimpleAccountType
+                    else: ExtendedAccountType
+
+  #wb.output.append(accountType.byte)
+  #wb.writeNibbles(nibbles, false)
+  #wb.output.append(acc.address)
+  #wb.output.append(acc.balance.toBytesBE)
+  #wb.output.append(acc.nonce.u256.toBytesBE)
+
+  #if accountType == ExtendedAccountType:
+
+  #0x00 pathnibbles:<Nibbles(64-d)> address:<Address> balance:<Bytes32> nonce:<Bytes32>
+  #0x01 pathnibbles:<Nibbles(64-d)> address:<Address> balance:<Bytes32> nonce:<Bytes32> bytecode:<Bytecode> storage:<Tree_Node(0,1)>
+
+  #<Bytecode> := len:<U32> b:<Byte>^len
+
 proc writeHashNode(wb: var WitnessBuilder, node: openArray[byte]) =
   # write type
   wb.output.append(HashNodeType.byte)
@@ -107,7 +127,8 @@ proc writeShortNode(wb: var WitnessBuilder, node: openArray[byte], depth: int) =
   of 2:
     let (isLeaf, k) = nodeRlp.extensionNodeKey
     if isLeaf:
-      writeAccountNode(wb, node, depth)
+      let acc = nodeRlp.listElem(1).toBytes.decode(Account)      
+      writeAccountNode(wb, acc, k, node, depth)
     else:
       # why this short extension node have no
       # child and still valid when we reconstruct
@@ -151,7 +172,7 @@ proc getBranchRecurseAux(wb: var WitnessBuilder, node: openArray[byte], path: Ni
         getBranchRecurseAux(wb, nextLookup, path.slice(sharedNibbles), depth + sharedNibbles)
       else:
         # AccountNodeType
-        writeAccountNode(wb, node, depth)
+        writeAccountNode(wb, value.toBytes.decode(Account), k, node, depth)
     else:
       # this is a potential branch for multiproof
       writeHashNode(wb, keccak(node).data)