Set zhimi.fan.za4 countdown timer to minutes

miio/integrations/zhimi/fan/fan.py

@@ -226,6 +226,18 @@ def button_pressed(self) -> Optional[str]:
         return None
 
 
+class FanStatusZA4(FanStatus):
+    """Container for status reports from the Xiaomi Mi Smart Pedestal Fan Zhimi ZA4."""
+
+    def __init__(self, data: Dict[str, Any]) -> None:
+        self.data = data
+
+    @property
+    def delay_off_countdown(self) -> int:
+        """Countdown until turning off in minutes."""
+        return self.data["poweroff_time"] / 60
+
+
 class Fan(Device):
     """Main class representing the Xiaomi Mi Smart Pedestal Fan."""
 
@@ -246,6 +258,10 @@ def status(self) -> FanStatus:
 
         values = self.get_properties(properties, max_properties=_props_per_request)
 
+        # The ZA4 has a countdown timer in minutes
+        if self.model in [MODEL_FAN_ZA4]:
+            return FanStatusZA4(dict(zip(properties, values)))
+
         return FanStatus(dict(zip(properties, values)))
 
     @command(default_output=format_output("Powering on"))
@@ -390,4 +406,8 @@ def delay_off(self, seconds: int):
         if seconds < 0:
             raise ValueError("Invalid value for a delayed turn off: %s" % seconds)
 
+        # Set delay countdown in minutes for model ZA4
+        if self.model in [MODEL_FAN_ZA4]:
+            return self.send("set_poweroff_time", [seconds * 60])
+
         return self.send("set_poweroff_time", [seconds])

miio/integrations/zhimi/fan/test_fan.py

@@ -8,6 +8,7 @@
     MODEL_FAN_SA1,
     MODEL_FAN_V2,
     MODEL_FAN_V3,
+    MODEL_FAN_ZA4,
     Fan,
     FanStatus,
     LedBrightness,
@@ -737,3 +738,66 @@
 
         with pytest.raises(ValueError):
             self.device.delay_off(-1)
+
+
+class DummyFanZA4(DummyDevice, Fan):
+    def __init__(self, *args, **kwargs):
+        self._model = MODEL_FAN_ZA4
+        self.state = {
+            "angle": 120,
+            "speed": 277,
+            "poweroff_time": 0,
+            "power": "on",
+            "ac_power": "on",
+            "angle_enable": "off",
+            "speed_level": 1,
+            "natural_level": 2,
+            "child_lock": "off",
+            "buzzer": 0,
+            "led_b": 0,
+            "use_time": 2318,
+        }
+
+        self.return_values = {
+            "get_prop": self._get_state,
+            "set_power": lambda x: self._set_state("power", x),
+            "set_speed_level": lambda x: self._set_state("speed_level", x),
+            "set_natural_level": lambda x: self._set_state("natural_level", x),
+            "set_move": lambda x: True,
+            "set_angle": lambda x: self._set_state("angle", x),
+            "set_angle_enable": lambda x: self._set_state("angle_enable", x),
+            "set_led_b": lambda x: self._set_state("led_b", x),
+            "set_buzzer": lambda x: self._set_state("buzzer", x),
+            "set_child_lock": lambda x: self._set_state("child_lock", x),
+            "set_poweroff_time": lambda x: self._set_state("poweroff_time", x),
+        }
+        super().__init__(args, kwargs)
+
+
+@pytest.fixture(scope="class")
+def fanza4(request):
+    request.cls.device = DummyFanZA4()
+    # TODO add ability to test on a real device
+
+
+@pytest.mark.usefixtures("fanza4")
+class TestFanZA4(TestCase):
+    def is_on(self):
+        return self.device.status().is_on
+
+    def state(self):
+        return self.device.status()
+
+    def test_delay_off(self):
+        def delay_off_countdown():
+            return self.device.status().delay_off_countdown
+
+        self.device.delay_off(100)
+        assert delay_off_countdown() == 100
+        self.device.delay_off(200)
+        assert delay_off_countdown() == 200
+        self.device.delay_off(0)
+        assert delay_off_countdown() == 0
+
+        with pytest.raises(ValueError):
+            self.device.delay_off(-1)