Adding save, bgsave, and lastsave commands.

README.rst

@@ -116,7 +116,6 @@ server
 ------
 
  * bgrewriteaof
- * bgsave
  * client kill
  * client list
  * client getname
@@ -135,7 +134,6 @@ server
  * debug object
  * debug segfault
  * info
- * lastsave
  * memory doctor
  * memory help
  * memory malloc-stats
@@ -144,7 +142,6 @@ server
  * memory usage
  * monitor
  * role
- * save
  * shutdown
  * slaveof
  * slowlog

fakeredis.py

@@ -541,6 +541,7 @@ def __init__(self, db=0, charset='utf-8', errors='strict',
         self._encoding_errors = errors
         self._pubsubs = []
         self._decode_responses = decode_responses
+        self._lastsave = datetime.now()
         self.connected = connected
         _patch_responses(self, _check_conn)
 
@@ -783,6 +784,17 @@ def persist(self, name):
     def ping(self):
         return True
 
+    def bgsave(self):
+        self._lastsave = datetime.now()
+        return True
+
+    def save(self):
+        self._lastsave = datetime.now()
+        return True
+
+    def lastsave(self):
+        return self._lastsave
+
     @_lua_reply(_lua_bool_ok)
     @_locked
     def rename(self, src, dst):

test_fakeredis.py

@@ -2870,6 +2870,32 @@ def test_key_patterns(self):
     def test_ping(self):
         self.assertTrue(self.redis.ping())
 
+    def test_bgsave(self):
+        self.assertTrue(self.redis.bgsave())
+
+    def test_save(self):
+        self.assertTrue(self.redis.save())
+
+    def test_lastsave(self):
+        self.assertTrue(isinstance(self.redis.lastsave(), datetime))
+
+    @attr('slow')
+    def test_bgsave_timestamp_update(self):
+        early_timestamp = self.redis.lastsave()
+        sleep(1)
+        self.assertTrue(self.redis.bgsave())
+        sleep(1)
+        late_timestamp = self.redis.lastsave()
+        self.assertLess(early_timestamp, late_timestamp)
+
+    @attr('slow')
+    def test_save_timestamp_update(self):
+        early_timestamp = self.redis.lastsave()
+        sleep(1)
+        self.assertTrue(self.redis.save())
+        late_timestamp = self.redis.lastsave()
+        self.assertLess(early_timestamp, late_timestamp)
+
     def test_type(self):
         self.redis.set('string_key', "value")
         self.redis.lpush("list_key", "value")