test effort

sync/src/tests/helpers.rs

@@ -117,7 +117,14 @@ impl BlockChainClient for TestBlockChainClient {
 		})
 	}
 
-	fn state_data(&self, _h: &H256) -> Option<Bytes> {
+	// TODO: returns just hashes instead of node state rlp(?)
+	fn state_data(&self, hash: &H256) -> Option<Bytes> {
+		// starts with 'f' ?
+		if *hash > H256::from("f000000000000000000000000000000000000000000000000000000000000000") {
+			let mut rlp = RlpStream::new();
+			rlp.append(&hash.clone());
+			return Some(rlp.out());
+		}
 		None
 	}