Raising NotImplementedError for certain CLUSTER commands (#2504)

Co-authored-by: Chayim <chayim@users.noreply.github.com>

Author: dvora-h

redis/commands/cluster.py

@@ -644,6 +644,16 @@ def cluster_links(self, target_node: "TargetNodesT") -> ResponseT:
         """
         return self.execute_command("CLUSTER LINKS", target_nodes=target_node)
 
+    def cluster_flushslots(self, target_nodes: Optional["TargetNodesT"] = None) -> None:
+        raise NotImplementedError(
+            "CLUSTER FLUSHSLOTS is intentionally not implemented in the client."
+        )
+
+    def cluster_bumpepoch(self, target_nodes: Optional["TargetNodesT"] = None) -> None:
+        raise NotImplementedError(
+            "CLUSTER BUMPEPOCH is intentionally not implemented in the client."
+        )
+
     def readonly(self, target_nodes: Optional["TargetNodesT"] = None) -> ResponseT:
         """
         Enables read queries.

tests/test_cluster.py

@@ -1289,6 +1289,14 @@ def test_cluster_links(self, r):
         for i in range(0, len(res) - 1, 2):
             assert res[i][3] == res[i + 1][3]
 
+    def test_cluster_flshslots_not_implemented(self, r):
+        with pytest.raises(NotImplementedError):
+            r.cluster_flushslots()
+
+    def test_cluster_bumpepoch_not_implemented(self, r):
+        with pytest.raises(NotImplementedError):
+            r.cluster_bumpepoch()
+
     @skip_if_redis_enterprise()
     def test_readonly(self):
         r = get_mocked_redis_client(host=default_host, port=default_port)