From 4a0469d3ecb9a699bcde7801724ce15a9075372b Mon Sep 17 00:00:00 2001
From: Jae Kwon <jae@tendermint.com>
Date: Tue, 8 Dec 2015 21:52:40 -0800
Subject: [PATCH] Make counter app use LittleEndian uint64 encoding

---
 example/counter.go | 11 +++++------
 test.sh            | 10 +++++-----
 2 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/example/counter.go b/example/counter.go
index 9e4b8671a..e96e78e5d 100644
--- a/example/counter.go
+++ b/example/counter.go
@@ -57,11 +57,10 @@ func (appC *CounterAppContext) SetOption(key string, value string) types.RetCode
 
 func (appC *CounterAppContext) AppendTx(tx []byte) ([]types.Event, types.RetCode) {
 	if appC.serial {
-		txValue, bz := binary.Varint(tx)
-		if bz <= 0 {
-			return nil, types.RetCodeInternalError
-		}
-		if txValue != int64(appC.txCount) {
+		tx8 := make([]byte, 8)
+		copy(tx8, tx)
+		txValue := binary.LittleEndian.Uint64(tx8)
+		if txValue != uint64(appC.txCount) {
 			return nil, types.RetCodeInternalError
 		}
 	}
@@ -75,7 +74,7 @@ func (appC *CounterAppContext) GetHash() ([]byte, types.RetCode) {
 		return nil, 0
 	} else {
 		hash := make([]byte, 32)
-		binary.PutVarint(hash, int64(appC.txCount))
+		binary.LittleEndian.PutUint64(hash, uint64(appC.txCount))
 		return hash, 0
 	}
 }
diff --git a/test.sh b/test.sh
index 4bc0f8db7..2f4458612 100755
--- a/test.sh
+++ b/test.sh
@@ -76,20 +76,20 @@ OUTPUT=`(tmsp batch) <<STDIN
 set_option serial on
 append_tx 0x00
 get_hash
-append_tx 0x02
+append_tx 0x01
 get_hash
 STDIN`
 
 HASH1=`echo "$OUTPUT" | tail -n +3 | head -n 1`
 HASH2=`echo "$OUTPUT" | tail -n +5 | head -n 1`
 
-if [[ "${HASH1:0:2}" != "02" ]]; then
-	echo "Expected hash to lead with 02. Got $HASH1"	
+if [[ "${HASH1:0:2}" != "01" ]]; then
+	echo "Expected hash to lead with 01. Got $HASH1"
 	exit 1
 fi
 
-if [[ "${HASH2:0:2}" != "04" ]]; then
-	echo "Expected hash to lead with 04. Got $HASH2"	
+if [[ "${HASH2:0:2}" != "02" ]]; then
+	echo "Expected hash to lead with 02. Got $HASH2"
 	exit 1
 fi