Add support for COMMAND LIST (#2149)

* Add support for COMMAND LIST

* style change

Author: dvora-h

redis/commands/core.py

@@ -769,6 +769,34 @@ def command_info(self, **kwargs) -> None:
     def command_count(self, **kwargs) -> ResponseT:
         return self.execute_command("COMMAND COUNT", **kwargs)
 
+    def command_list(
+        self,
+        module: Optional[str] = None,
+        category: Optional[str] = None,
+        pattern: Optional[str] = None,
+    ) -> ResponseT:
+        """
+        Return an array of the server's command names.
+        You can use one of the following filters:
+        ``module``: get the commands that belong to the module
+        ``category``: get the commands in the ACL category
+        ``pattern``: get the commands that match the given pattern
+
+        For more information see https://redis.io/commands/command-list/
+        """
+        pieces = []
+        if module is not None:
+            pieces.extend(["MODULE", module])
+        if category is not None:
+            pieces.extend(["ACLCAT", category])
+        if pattern is not None:
+            pieces.extend(["PATTERN", pattern])
+
+        if pieces:
+            pieces.insert(0, "FILTERBY")
+
+        return self.execute_command("COMMAND LIST", *pieces)
+
     def command_getkeysandflags(self, *args: List[str]) -> List[Union[str, List[str]]]:
         """
         Returns array of keys from a full Redis command and their usage flags.

tests/test_commands.py

@@ -4550,6 +4550,16 @@ def test_command_docs(self, r):
         with pytest.raises(NotImplementedError):
             r.command_docs("set")
 
+    @skip_if_server_version_lt("7.0.0")
+    @skip_if_redis_enterprise()
+    def test_command_list(self, r: redis.Redis):
+        assert len(r.command_list()) > 300
+        assert len(r.command_list(module="fakemod")) == 0
+        assert len(r.command_list(category="list")) > 15
+        assert "lpop" in r.command_list(pattern="l*")
+        with pytest.raises(redis.ResponseError):
+            r.command_list(category="list", pattern="l*")
+
     @pytest.mark.onlynoncluster
     @skip_if_server_version_lt("2.8.13")
     @skip_if_redis_enterprise()