From e3005efb3d37210a7b0bd8501e5cf806b439cab6 Mon Sep 17 00:00:00 2001
From: Paul Hauner <paul@paulhauner.com>
Date: Fri, 20 Jul 2018 17:47:29 +1000
Subject: [PATCH] Add zero() method for Block

---
 src/state/block.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/state/block.rs b/src/state/block.rs
index cb6e1fb02..adc028a12 100644
--- a/src/state/block.rs
+++ b/src/state/block.rs
@@ -31,6 +31,20 @@ impl Block {
             sig: None
         }
     }
+    
+    pub fn zero() -> Block {
+        Block {
+            parent_hash: Sha256Digest::zero(),
+            skip_count: 0,
+            randao_reveal: Sha256Digest::zero(),
+            attestation_bitfield: Bitfield::new(),
+            attestation_aggregate_sig: AggregateSignature::new(),
+            shard_aggregate_votes: vec![],
+            main_chain_ref: Sha256Digest::zero(),
+            state_hash: StateHash::zero(),
+            sig: None
+        }
+    }
 
     /*
      * Take a Block and covert it into an array of u8 for BLS signing