Validate Number value before calling entity method (#52343)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

tests/testing_config/custom_components/test/number.py

@@ -0,0 +1,51 @@
+"""
+Provide a mock number platform.
+
+Call init before using it in your tests to ensure clean test data.
+"""
+from homeassistant.components.number import NumberEntity
+
+from tests.common import MockEntity
+
+UNIQUE_NUMBER = "unique_number"
+
+ENTITIES = []
+
+
+class MockNumberEntity(MockEntity, NumberEntity):
+    """Mock Select class."""
+
+    _attr_value = 50.0
+    _attr_step = 1.0
+
+    @property
+    def value(self):
+        """Return the current value."""
+        return self._handle("value")
+
+    def set_value(self, value: float) -> None:
+        """Change the selected option."""
+        self._attr_value = value
+
+
+def init(empty=False):
+    """Initialize the platform with entities."""
+    global ENTITIES
+
+    ENTITIES = (
+        []
+        if empty
+        else [
+            MockNumberEntity(
+                name="test",
+                unique_id=UNIQUE_NUMBER,
+            ),
+        ]
+    )
+
+
+async def async_setup_platform(
+    hass, config, async_add_entities_callback, discovery_info=None
+):
+    """Return mock entities."""
+    async_add_entities_callback(ENTITIES)