Add improved scene support to the input_datetime integration (#28105)

* input_datetime reproduce state

* simplify service decision

tests/components/input_datetime/test_reproduce_state.py

@@ -0,0 +1,69 @@
+"""Test reproduce state for Input datetime."""
+from homeassistant.core import State
+
+from tests.common import async_mock_service
+
+
+async def test_reproducing_states(hass, caplog):
+    """Test reproducing Input datetime states."""
+    hass.states.async_set(
+        "input_datetime.entity_datetime",
+        "2010-10-10 01:20:00",
+        {"has_date": True, "has_time": True},
+    )
+    hass.states.async_set(
+        "input_datetime.entity_time", "01:20:00", {"has_date": False, "has_time": True}
+    )
+    hass.states.async_set(
+        "input_datetime.entity_date",
+        "2010-10-10",
+        {"has_date": True, "has_time": False},
+    )
+
+    datetime_calls = async_mock_service(hass, "input_datetime", "set_datetime")
+
+    # These calls should do nothing as entities already in desired state
+    await hass.helpers.state.async_reproduce_state(
+        [
+            State("input_datetime.entity_datetime", "2010-10-10 01:20:00"),
+            State("input_datetime.entity_time", "01:20:00"),
+            State("input_datetime.entity_date", "2010-10-10"),
+        ],
+        blocking=True,
+    )
+
+    assert len(datetime_calls) == 0
+
+    # Test invalid state is handled
+    await hass.helpers.state.async_reproduce_state(
+        [State("input_datetime.entity_datetime", "not_supported")], blocking=True
+    )
+
+    assert "not_supported" in caplog.text
+    assert len(datetime_calls) == 0
+
+    # Make sure correct services are called
+    await hass.helpers.state.async_reproduce_state(
+        [
+            State("input_datetime.entity_datetime", "2011-10-10 02:20:00"),
+            State("input_datetime.entity_time", "02:20:00"),
+            State("input_datetime.entity_date", "2011-10-10"),
+            # Should not raise
+            State("input_datetime.non_existing", "2010-10-10 01:20:00"),
+        ],
+        blocking=True,
+    )
+
+    valid_calls = [
+        {
+            "entity_id": "input_datetime.entity_datetime",
+            "datetime": "2011-10-10 02:20:00",
+        },
+        {"entity_id": "input_datetime.entity_time", "time": "02:20:00"},
+        {"entity_id": "input_datetime.entity_date", "date": "2011-10-10"},
+    ]
+    assert len(datetime_calls) == 3
+    for call in datetime_calls:
+        assert call.domain == "input_datetime"
+        assert call.data in valid_calls
+        valid_calls.remove(call.data)