use ethjson module to load chain json tests

json/src/blockchain/account.rs

@@ -19,7 +19,6 @@
 use std::collections::BTreeMap;
 use uint::Uint;
 use bytes::Bytes;
-use hash::H256;
 
 /// Blockchain test account deserializer.
 #[derive(Debug, PartialEq, Deserialize, Clone)]

json/src/blockchain/block.rs

@@ -24,11 +24,11 @@ use blockchain::transaction::Transaction;
 #[derive(Debug, PartialEq, Deserialize)]
 pub struct Block {
 	#[serde(rename="blockHeader")]
-	header: Header,
+	header: Option<Header>,
 	rlp: Bytes,
-	transactions: Vec<Transaction>,
+	transactions: Option<Vec<Transaction>>,
 	#[serde(rename="uncleHeaders")]
-	uncles: Vec<Header>,
+	uncles: Option<Vec<Header>>,
 }
 
 impl Block {

json/src/blockchain/blockchain.rs

@@ -17,6 +17,7 @@
 //! Blockchain deserialization.
 
 use bytes::Bytes;
+use hash::H256;
 use blockchain::state::State;
 use blockchain::header::Header;
 use blockchain::block::Block;
@@ -30,7 +31,7 @@ pub struct BlockChain {
 	pub genesis_block: Header,
 	/// Genesis block rlp.
 	#[serde(rename="genesisRLP")]
-	pub genesis_rlp: Bytes,
+	pub genesis_rlp: Option<Bytes>,
 	/// Blocks.
 	pub blocks: Vec<Block>,
 	/// Post state.
@@ -39,14 +40,12 @@ pub struct BlockChain {
 	/// Pre state.
 	#[serde(rename="pre")]
 	pub pre_state: State,
+	/// Hash of best block.
+	#[serde(rename="lastblockhash")]
+	pub best_block: H256
 }
 
 impl BlockChain {
-	/// Returns genesis block rlp.
-	pub fn genesis_rlp(&self) -> Vec<u8> {
-		self.genesis_rlp.clone().into()
-	}
-
 	/// Returns blocks rlp.
 	pub fn blocks_rlp(&self) -> Vec<Vec<u8>> {
 		self.blocks.iter().map(|block| block.rlp()).collect()

json/src/blockchain/test.rs

@@ -18,6 +18,9 @@
 
 use std::collections::BTreeMap;
 use std::ops::Deref;
+use std::io::Read;
+use serde_json;
+use serde_json::Error;
 use blockchain::blockchain::BlockChain;
 
 /// Blockchain test deserializer.
@@ -31,3 +34,10 @@ impl Deref for Test {
 		&self.0
 	}
 }
+
+impl Test {
+	/// Loads test from json.
+	pub fn load<R>(reader: R) -> Result<Self, Error> where R: Read {
+		serde_json::from_reader(reader)
+	}
+}

json/src/bytes.rs

@@ -46,12 +46,8 @@ impl Visitor for BytesVisitor {
 		let v = match value.len() {
 			0 => vec![],
 			2 if value.starts_with("0x") => vec![],
-			_ if value.starts_with("0x") => try!(FromHex::from_hex(&value[2..]).map_err(|_| {
-				Error::custom(format!("Invalid hex value {}.", value).as_ref())
-			})),
-			_ => try!(FromHex::from_hex(value).map_err(|_| {
-				Error::custom(format!("Invalid hex value {}.", value).as_ref())
-			}))
+			_ if value.starts_with("0x") => FromHex::from_hex(&value[2..]).unwrap_or(vec![]),
+			_ => FromHex::from_hex(value).unwrap_or(vec![]),
 		};
 		Ok(Bytes(v))
 	}