adding testing for redis

lemur/common/redis.py

@@ -23,7 +23,7 @@ class RedisHandler:
     def redis(self, db=0):
         # The decode_responses flag here directs the client to convert the responses from Redis into Python strings
         # using the default encoding utf-8.  This is client specific.
-        red = redis.StrictRedis(host=self.host, port=self.port, db=self.db, charset="utf-8", decode_responses=True)
+        red = redis.StrictRedis(host=self.host, port=self.port, db=self.db, encoding="utf-8", decode_responses=True)
         return red
 
 

lemur/tests/test_redis.py

@@ -0,0 +1,13 @@
+import fakeredis
+import time
+import sys
+
+
+def test_write_and_read_from_redis():
+    function = f"{__name__}.{sys._getframe().f_code.co_name}"
+
+    red = fakeredis.FakeStrictRedis()
+    key = f"{function}.last_success"
+    value = int(time.time())
+    assert red.set(key, value) is True
+    assert (int(red.get(key)) == value) is True