Add support for EXPIRETIME (#1860)

* add expiretime

* skip test

Author: dvora-h

redis/commands/core.py

@@ -1523,6 +1523,15 @@ def expireat(self, name: KeyT, when: AbsExpiryT) -> ResponseT:
             when = int(time.mktime(when.timetuple()))
         return self.execute_command("EXPIREAT", name, when)
 
+    def expiretime(self, key: str) -> int:
+        """
+        Returns the absolute Unix timestamp (since January 1, 1970) in seconds
+        at which the given key will expire.
+
+        For more information check https://redis.io/commands/expiretime
+        """
+        return self.execute_command("EXPIRETIME", key)
+
     def get(self, name: KeyT) -> ResponseT:
         """
         Return the value at key ``name``, or None if the key doesn't exist

tests/test_commands.py

@@ -1075,6 +1075,12 @@ def test_expireat_unixtime(self, r):
         assert r.expireat("a", expire_at_seconds) is True
         assert 0 < r.ttl("a") <= 61
 
+    @skip_if_server_version_lt("7.0.0")
+    def test_expiretime(self, r):
+        r.set("a", "foo")
+        r.expireat("a", 33177117420)
+        assert r.expiretime("a") == 33177117420
+
     def test_get_and_set(self, r):
         # get and set can't be tested independently of each other
         assert r.get("a") is None