From aae5cbc74533e385bad5151a67526c7bb779feef Mon Sep 17 00:00:00 2001
From: zelig <viktor.tron@gmail.com>
Date: Fri, 2 Jan 2015 00:41:54 +0000
Subject: [PATCH] changes to core/types/block - add HeaderHash and
 ParentHeaderHash public fields to allow block mocking for blockpool tests -
 Hash() and ParentHash() checks these fields, if unset falls back to orig -
 HashNoNonce() just returns self.header.HashNoNonce() - better implement with
 interfaces, so this may be temporary

---
 core/types/block.go | 35 +++++++++++++++++++++++++----------
 1 file changed, 25 insertions(+), 10 deletions(-)

diff --git a/core/types/block.go b/core/types/block.go
index b59044bfce..f48f04ad4f 100644
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -67,10 +67,13 @@ func (self *Header) HashNoNonce() []byte {
 }
 
 type Block struct {
-	header       *Header
-	uncles       []*Header
-	transactions Transactions
-	Td           *big.Int
+	// Preset Hash for mock
+	HeaderHash       []byte
+	ParentHeaderHash []byte
+	header           *Header
+	uncles           []*Header
+	transactions     Transactions
+	Td               *big.Int
 
 	receipts Receipts
 	Reward   *big.Int
@@ -189,23 +192,35 @@ func (self *Block) RlpDataForStorage() interface{} {
 // Header accessors (add as you need them)
 func (self *Block) Number() *big.Int          { return self.header.Number }
 func (self *Block) NumberU64() uint64         { return self.header.Number.Uint64() }
-func (self *Block) ParentHash() []byte        { return self.header.ParentHash }
 func (self *Block) Bloom() []byte             { return self.header.Bloom }
 func (self *Block) Coinbase() []byte          { return self.header.Coinbase }
 func (self *Block) Time() int64               { return int64(self.header.Time) }
 func (self *Block) GasLimit() *big.Int        { return self.header.GasLimit }
 func (self *Block) GasUsed() *big.Int         { return self.header.GasUsed }
-func (self *Block) Hash() []byte              { return self.header.Hash() }
 func (self *Block) Trie() *ptrie.Trie         { return ptrie.New(self.header.Root, ethutil.Config.Db) }
+func (self *Block) SetRoot(root []byte)       { self.header.Root = root }
 func (self *Block) State() *state.StateDB     { return state.New(self.Trie()) }
 func (self *Block) Size() ethutil.StorageSize { return ethutil.StorageSize(len(ethutil.Encode(self))) }
-func (self *Block) SetRoot(root []byte)       { self.header.Root = root }
 
-// Implement block.Pow
+// Implement pow.Block
 func (self *Block) Difficulty() *big.Int { return self.header.Difficulty }
 func (self *Block) N() []byte            { return self.header.Nonce }
-func (self *Block) HashNoNonce() []byte {
-	return crypto.Sha3(ethutil.Encode(self.header.rlpData(false)))
+func (self *Block) HashNoNonce() []byte  { return self.header.HashNoNonce() }
+
+func (self *Block) Hash() []byte {
+	if self.HeaderHash != nil {
+		return self.HeaderHash
+	} else {
+		return self.header.Hash()
+	}
+}
+
+func (self *Block) ParentHash() []byte {
+	if self.ParentHeaderHash != nil {
+		return self.ParentHeaderHash
+	} else {
+		return self.header.ParentHash
+	}
 }
 
 func (self *Block) String() string {