Fix input_number invalid state restore handling (#74213)

Co-authored-by: J. Nick Koston <nick@koston.org>

homeassistant/components/input_number/__init__.py

@@ -1,6 +1,7 @@
 """Support to set a numeric value from a slider or text box."""
 from __future__ import annotations
 
+from contextlib import suppress
 import logging
 
 import voluptuous as vol
@@ -281,8 +282,10 @@ class InputNumber(RestoreEntity):
         if self._current_value is not None:
             return
 
-        state = await self.async_get_last_state()
-        value = state and float(state.state)
+        value: float | None = None
+        if state := await self.async_get_last_state():
+            with suppress(ValueError):
+                value = float(state.state)
 
         # Check against None because value can be 0
         if value is not None and self._minimum <= value <= self._maximum:

tests/components/input_number/test_init.py

@@ -255,6 +255,29 @@ async def test_restore_state(hass):
     assert float(state.state) == 10
 
 
+async def test_restore_invalid_state(hass):
+    """Ensure an invalid restore state is handled."""
+    mock_restore_cache(
+        hass, (State("input_number.b1", "="), State("input_number.b2", "200"))
+    )
+
+    hass.state = CoreState.starting
+
+    await async_setup_component(
+        hass,
+        DOMAIN,
+        {DOMAIN: {"b1": {"min": 2, "max": 100}, "b2": {"min": 10, "max": 100}}},
+    )
+
+    state = hass.states.get("input_number.b1")
+    assert state
+    assert float(state.state) == 2
+
+    state = hass.states.get("input_number.b2")
+    assert state
+    assert float(state.state) == 10
+
+
 async def test_initial_state_overrules_restore_state(hass):
     """Ensure states are restored on startup."""
     mock_restore_cache(