From 549d4cd977f687d436feb4a794fd2f784c28250d Mon Sep 17 00:00:00 2001
From: ruicav <r2cavaleiro@gmail.com>
Date: Wed, 24 Feb 2016 23:06:04 -0300
Subject: [PATCH] persist returns false if key does not exist

---
 src/main/java/com/fiftyonred/mock_jedis/MockStorage.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/com/fiftyonred/mock_jedis/MockStorage.java b/src/main/java/com/fiftyonred/mock_jedis/MockStorage.java
index e3d5ad4..701937b 100644
--- a/src/main/java/com/fiftyonred/mock_jedis/MockStorage.java
+++ b/src/main/java/com/fiftyonred/mock_jedis/MockStorage.java
@@ -232,7 +232,7 @@ public synchronized long pttl(final DataContainer key) {
 
 	public synchronized boolean persist(final DataContainer key) {
 		final KeyInformation info = keys.get(key);
-		if (info.getTTL() == -1) {
+		if (info == null || info.getTTL() == -1) {
 			return false;
 		}
 		info.setExpiration(-1L);