Fixed binary safe pipeline commands and added tests for pipelined hash functions

src/main/java/redis/clients/jedis/BuilderFactory.java

@@ -144,6 +144,13 @@ public class BuilderFactory {
             }
             List<byte[]> l = (List<byte[]>) data;
             final Set<byte[]> result = new LinkedHashSet<byte[]>(l);
+            for (final byte[] barray : l) {
+                if (barray == null) {
+                    result.add(null);
+                } else {
+                    result.add(barray);
+                }
+            }
             return result;
         }
 
@@ -151,6 +158,24 @@ public class BuilderFactory {
             return "ZSet<byte[]>";
         }
     };
+    public static final Builder<Map<byte[], byte[]>> BYTE_ARRAY_MAP = new Builder<Map<byte[], byte[]>>() {
+        @SuppressWarnings("unchecked")
+        public Map<byte[], byte[]> build(Object data) {
+            final List<byte[]> flatHash = (List<byte[]>) data;
+            final Map<byte[], byte[]> hash = new HashMap<byte[], byte[]>();
+            final Iterator<byte[]> iterator = flatHash.iterator();
+            while (iterator.hasNext()) {
+                hash.put(iterator.next(), iterator.next());
+            }
+
+            return hash;
+        }
+
+        public String toString() {
+            return "Map<byte[], byte[]>";
+        }
+
+    };
 
     public static final Builder<Set<String>> STRING_ZSET = new Builder<Set<String>>() {
         @SuppressWarnings("unchecked")