Support decode_responses for string ops

Addresses locationlabs#97

mockredis/client.py

@@ -40,6 +40,7 @@ def __init__(self,
                  load_lua_dependencies=True,
                  blocking_timeout=1000,
                  blocking_sleep_interval=0.01,
+                 decode_responses=False,
                  **kwargs):
         """
         Initialize as either StrictRedis or Redis.
@@ -51,6 +52,7 @@ def __init__(self,
         self.load_lua_dependencies = load_lua_dependencies
         self.blocking_timeout = blocking_timeout
         self.blocking_sleep_interval = blocking_sleep_interval
+        self.decode_responses = decode_responses
         # The 'Redis' store
         self.redis = defaultdict(dict)
         self.redis_config = defaultdict(dict)
@@ -294,7 +296,10 @@ def dbsize(self):
 
     def get(self, key):
         key = self._encode(key)
-        return self.redis.get(key)
+        value = self.redis.get(key)
+        if self.decode_responses and isinstance(value, bytes):
+            value = value.decode()
+        return value
 
     def __getitem__(self, name):
         """

mockredis/tests/test_string.py

@@ -309,3 +309,8 @@ def test_setbit(self):
         for x in range(16, 32, 2):
             eq_(0, self.redis.setbit("setbit_key", x, 1))
         eq_(b"\xaa\xaa\xaa\xaa", self.redis.get("setbit_key"))
+
+    def test_decode_responses(self):
+        self.redis.decode_responses = True
+        self.redis.set('key', 'value')
+        eq_(self.redis.get('key'), 'value')