Improve condition schema validation

homeassistant/helpers/config_validation.py

@@ -1758,7 +1758,7 @@ def _base_condition_validator(value: Any) -> Any:
     vol.Schema(
         {
             **CONDITION_BASE_SCHEMA,
-            CONF_CONDITION: vol.NotIn(BUILT_IN_CONDITIONS),
+            CONF_CONDITION: vol.All(str, vol.NotIn(BUILT_IN_CONDITIONS)),
         },
         extra=vol.ALLOW_EXTRA,
     )(value)

tests/helpers/test_condition.py

@@ -70,11 +70,26 @@ def assert_condition_trace(expected):
             assert_element(condition_trace[key][index], element, path)
 
 
-async def test_invalid_condition(hass: HomeAssistant) -> None:
-    """Test if invalid condition raises."""
-    with pytest.raises(HomeAssistantError):
-        await condition.async_from_config(
-            hass,
+@pytest.mark.parametrize(
+    ("config", "error"),
+    [
+        (
+            {"condition": 123},
+            "Unexpected value for condition: '123'. Expected and, device, not, "
+            "numeric_state, or, state, template, time, trigger, zone",
+        )
+    ],
+)
+async def test_invalid_condition(hass: HomeAssistant, config: dict, error: str) -> None:
+    """Test if validating an invalid condition raises."""
+    with pytest.raises(vol.Invalid, match=error):
+        cv.CONDITION_SCHEMA(config)
+
+
+@pytest.mark.parametrize(
+    ("config", "error"),
+    [
+        (
             {
                 "condition": "invalid",
                 "conditions": [
@@ -85,7 +100,15 @@ async def test_invalid_condition(hass: HomeAssistant) -> None:
                     },
                 ],
             },
+            'Invalid condition "invalid" specified',
         )
+    ],
+)
+async def test_unknown_condition(hass: HomeAssistant, config: dict, error: str) -> None:
+    """Test if creating an unknown condition raises."""
+    config = cv.CONDITION_SCHEMA(config)
+    with pytest.raises(HomeAssistantError, match=error):
+        await condition.async_from_config(hass, config)
 
 
 async def test_and_condition(hass: HomeAssistant) -> None:

tests/helpers/test_config_validation.py

@@ -1462,6 +1462,12 @@ def test_key_value_schemas_with_default() -> None:
         ({"wait_template": "{{ invalid"}, "invalid template"),
         # The validation error message could be improved to explain that this is not
         # a valid shorthand template
+        (
+            {"condition": 123},
+            "Unexpected value for condition: '123'. Expected and, device, not, "
+            "numeric_state, or, state, template, time, trigger, zone, a list of "
+            "conditions or a valid template",
+        ),
         (
             {"condition": "not", "conditions": "not a dynamic template"},
             "Expected a dictionary",