Map dry and fan only states for homekit thermostats (#33682)

Homekit only has Off/Heat/Cool/Auto at this time, but
at least we can prevent the device from erroring
by mapping dry and fan to cool so it continues
to function.

homeassistant/components/homekit/type_thermostats.py

@@ -16,6 +16,8 @@ from homeassistant.components.climate.const import (
     ATTR_TARGET_TEMP_HIGH,
     ATTR_TARGET_TEMP_LOW,
     CURRENT_HVAC_COOL,
+    CURRENT_HVAC_DRY,
+    CURRENT_HVAC_FAN,
     CURRENT_HVAC_HEAT,
     CURRENT_HVAC_IDLE,
     CURRENT_HVAC_OFF,
@@ -91,6 +93,8 @@ HC_HASS_TO_HOMEKIT_ACTION = {
     CURRENT_HVAC_IDLE: 0,
     CURRENT_HVAC_HEAT: 1,
     CURRENT_HVAC_COOL: 2,
+    CURRENT_HVAC_DRY: 2,
+    CURRENT_HVAC_FAN: 2,
 }
 
 
@@ -382,6 +386,7 @@ class Thermostat(HomeAccessory):
         # Set current operation mode for supported thermostats
         hvac_action = new_state.attributes.get(ATTR_HVAC_ACTION)
         if hvac_action:
+
             self.char_current_heat_cool.set_value(
                 HC_HASS_TO_HOMEKIT_ACTION[hvac_action]
             )

tests/components/homekit/test_type_thermostats.py

@@ -17,6 +17,8 @@ from homeassistant.components.climate.const import (
     ATTR_TARGET_TEMP_LOW,
     ATTR_TARGET_TEMP_STEP,
     CURRENT_HVAC_COOL,
+    CURRENT_HVAC_DRY,
+    CURRENT_HVAC_FAN,
     CURRENT_HVAC_HEAT,
     CURRENT_HVAC_IDLE,
     DEFAULT_MAX_TEMP,
@@ -25,6 +27,7 @@ from homeassistant.components.climate.const import (
     DOMAIN as DOMAIN_CLIMATE,
     HVAC_MODE_AUTO,
     HVAC_MODE_COOL,
+    HVAC_MODE_DRY,
     HVAC_MODE_FAN_ONLY,
     HVAC_MODE_HEAT,
     HVAC_MODE_HEAT_COOL,
@@ -233,6 +236,38 @@ async def test_thermostat(hass, hk_driver, cls, events):
     assert acc.char_current_temp.value == 22.0
     assert acc.char_display_units.value == 0
 
+    hass.states.async_set(
+        entity_id,
+        HVAC_MODE_FAN_ONLY,
+        {
+            ATTR_TEMPERATURE: 22.0,
+            ATTR_CURRENT_TEMPERATURE: 22.0,
+            ATTR_HVAC_ACTION: CURRENT_HVAC_FAN,
+        },
+    )
+    await hass.async_block_till_done()
+    assert acc.char_target_temp.value == 22.0
+    assert acc.char_current_heat_cool.value == 2
+    assert acc.char_target_heat_cool.value == 2
+    assert acc.char_current_temp.value == 22.0
+    assert acc.char_display_units.value == 0
+
+    hass.states.async_set(
+        entity_id,
+        HVAC_MODE_DRY,
+        {
+            ATTR_TEMPERATURE: 22.0,
+            ATTR_CURRENT_TEMPERATURE: 22.0,
+            ATTR_HVAC_ACTION: CURRENT_HVAC_DRY,
+        },
+    )
+    await hass.async_block_till_done()
+    assert acc.char_target_temp.value == 22.0
+    assert acc.char_current_heat_cool.value == 2
+    assert acc.char_target_heat_cool.value == 2
+    assert acc.char_current_temp.value == 22.0
+    assert acc.char_display_units.value == 0
+
     # Set from HomeKit
     call_set_temperature = async_mock_service(hass, DOMAIN_CLIMATE, "set_temperature")
     call_set_hvac_mode = async_mock_service(hass, DOMAIN_CLIMATE, "set_hvac_mode")