[FIX] Add mocked miner validations

Author: Nicolas Tallar

src/main/scala/io/iohk/ethereum/consensus/ConsensusBuilder.scala

@@ -27,7 +27,7 @@ trait StdConsensusBuilder extends ConsensusBuilder {
   protected def buildEthashConsensus(): ethash.EthashConsensus = {
     val specificConfig = ethash.EthashConfig(mantisConfig)
     val fullConfig = newConfig(specificConfig)
-    val validators = EthashValidators(blockchainConfig)
+    val validators = EthashValidators(blockchainConfig, consensusConfig.protocol)
     val consensus = EthashConsensus(vm, blockchain, blockchainConfig, fullConfig, validators)
     consensus
   }

src/main/scala/io/iohk/ethereum/consensus/ConsensusConfig.scala

@@ -36,7 +36,8 @@ object ConsensusConfig extends Logger {
 
 
   final val AllowedProtocols = Set(
-    Protocol.Names.Ethash
+    Protocol.Names.Ethash,
+    Protocol.Names.MockedPow
   )
 
   final val AllowedProtocolsError = (s: String) ⇒ Keys.Consensus +

src/main/scala/io/iohk/ethereum/consensus/ethash/validators/EthashValidators.scala

@@ -44,8 +44,10 @@ trait EthashValidators extends Validators {
 }
 
 object EthashValidators {
-  def apply(blockchainConfig: BlockchainConfig): EthashValidators = {
-    val blockHeaderValidator: EthashBlockHeaderValidator = new EthashBlockHeaderValidator(blockchainConfig)
+  def apply(blockchainConfig: BlockchainConfig, protocol: Protocol): EthashValidators = {
+    val blockHeaderValidator: BlockHeaderValidator =
+      if(protocol == Protocol.MockedPow) new MockedBlockHeaderValidator(blockchainConfig)
+      else new EthashBlockHeaderValidator(blockchainConfig)
 
     new StdEthashValidators(
       StdBlockValidator,

src/main/scala/io/iohk/ethereum/consensus/ethash/validators/MockedBlockHeaderValidator.scala

@@ -0,0 +1,21 @@
+package io.iohk.ethereum.consensus.ethash
+package validators
+
+import io.iohk.ethereum.consensus.difficulty.DifficultyCalculator
+import io.iohk.ethereum.consensus.ethash.difficulty.EthashDifficultyCalculator
+import io.iohk.ethereum.consensus.validators.{ BlockHeaderError, BlockHeaderValid, BlockHeaderValidatorSkeleton }
+import io.iohk.ethereum.domain.BlockHeader
+import io.iohk.ethereum.utils.BlockchainConfig
+
+/**
+  * A block header validator for Ethash.
+  */
+class MockedBlockHeaderValidator(blockchainConfig: BlockchainConfig) extends BlockHeaderValidatorSkeleton(blockchainConfig) {
+
+  protected def difficulty: DifficultyCalculator = new EthashDifficultyCalculator(blockchainConfig)
+
+  def validateEvenMore(blockHeader: BlockHeader, parentHeader: BlockHeader): Either[BlockHeaderError, BlockHeaderValid] =
+    Right(BlockHeaderValid)
+
+}
+