From 35abb4df926d3d9c10b9caf9645d61097a936f32 Mon Sep 17 00:00:00 2001
From: Jae Kwon <jae@tendermint.com>
Date: Fri, 4 Dec 2015 00:59:02 -0800
Subject: [PATCH] Allow for test apps to return nil hashes

---
 consensus/state_test.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/consensus/state_test.go b/consensus/state_test.go
index ca12cbf1b..a61577587 100644
--- a/consensus/state_test.go
+++ b/consensus/state_test.go
@@ -192,6 +192,9 @@ func TestBadProposal(t *testing.T) {
 
 	// make the block bad by tampering with statehash
 	stateHash := propBlock.AppHash
+	if len(stateHash) == 0 {
+		stateHash = make([]byte, 32)
+	}
 	stateHash[0] = byte((stateHash[0] + 1) % 255)
 	propBlock.AppHash = stateHash
 	propBlockParts := propBlock.MakePartSet()