Add redis/redis-py@627db54

hrandfield (redis/redis-py#1513)

Signed-off-by: Andrew-Chen-Wang <acwangpython@gmail.com>

aioredis/client.py

@@ -2041,6 +2041,28 @@ def pttl(self, name: KeyT) -> Awaitable:
         """Returns the number of milliseconds until the key ``name`` will expire"""
         return self.execute_command("PTTL", name)
 
+    def hrandfield(
+        self, key: str, count: int = None, withvalues: bool = False
+    ) -> Awaitable:
+        """
+        Return a random field from the hash value stored at key.
+
+        count: if the argument is positive, return an array of distinct fields.
+        If called with a negative count, the behavior changes and the command
+        is allowed to return the same field multiple times. In this case,
+        the number of returned fields is the absolute value of the
+        specified count.
+        withvalues: The optional WITHVALUES modifier changes the reply so it
+        includes the respective values of the randomly selected hash fields.
+        """
+        params = []
+        if count is not None:
+            params.append(count)
+        if withvalues:
+            params.append("WITHVALUES")
+
+        return self.execute_command("HRANDFIELD", key, *params)
+
     def randomkey(self) -> Awaitable:
         """Returns the name of a random key"""
         return self.execute_command("RANDOMKEY")

tests/test_commands.py

@@ -962,6 +962,19 @@ async def test_pttl_no_key(self, r: aioredis.Redis):
         """PTTL on servers 2.8 and after return -2 when the key doesn't exist"""
         assert await r.pttl("a") == -2
 
+    @skip_if_server_version_lt("6.2.0")
+    def test_hrandfield(self, r):
+        assert await r.hrandfield("key") is None
+        await r.hset("key", mapping={"a": 1, "b": 2, "c": 3, "d": 4, "e": 5})
+        assert await r.hrandfield("key") is not None
+        assert len(await r.hrandfield("key", 2)) == 2
+        # with values
+        assert len(await r.hrandfield("key", 2, True)) == 4
+        # without duplications
+        assert len(await r.hrandfield("key", 10)) == 5
+        # with duplications
+        assert len(await r.hrandfield("key", -10)) == 10
+
     async def test_randomkey(self, r: aioredis.Redis):
         assert await r.randomkey() is None
         for key in ("a", "b", "c"):