Detect attempt to setup config entry integration via YAML (#93589)

tests/test_setup.py

@@ -728,3 +728,57 @@ async def test_async_start_setup_platforms(hass: HomeAssistant) -> None:
     assert "august" not in hass.data[setup.DATA_SETUP_STARTED]
     assert isinstance(hass.data[setup.DATA_SETUP_TIME]["august"], datetime.timedelta)
     assert "sensor" not in hass.data[setup.DATA_SETUP_TIME]
+
+
+async def test_setup_config_entry_from_yaml(
+    hass: HomeAssistant, caplog: pytest.LogCaptureFixture
+) -> None:
+    """Test attempting to setup an integration which only supports config_entries."""
+    expected_warning = (
+        "The test_integration_only_entry integration does not support YAML setup, "
+        "please remove it from your configuration"
+    )
+
+    mock_integration(
+        hass,
+        MockModule(
+            "test_integration_only_entry",
+            setup=False,
+            async_setup_entry=AsyncMock(return_value=True),
+        ),
+    )
+
+    assert await setup.async_setup_component(hass, "test_integration_only_entry", {})
+    assert expected_warning not in caplog.text
+    caplog.clear()
+    hass.data.pop(setup.DATA_SETUP)
+    hass.config.components.remove("test_integration_only_entry")
+
+    # There should be a warning, but setup should not fail
+    assert await setup.async_setup_component(
+        hass, "test_integration_only_entry", {"test_integration_only_entry": None}
+    )
+    assert expected_warning in caplog.text
+    caplog.clear()
+    hass.data.pop(setup.DATA_SETUP)
+    hass.config.components.remove("test_integration_only_entry")
+
+    # There should be a warning, but setup should not fail
+    assert await setup.async_setup_component(
+        hass, "test_integration_only_entry", {"test_integration_only_entry": {}}
+    )
+    assert expected_warning in caplog.text
+    caplog.clear()
+    hass.data.pop(setup.DATA_SETUP)
+    hass.config.components.remove("test_integration_only_entry")
+
+    # There should be a warning, but setup should not fail
+    assert await setup.async_setup_component(
+        hass,
+        "test_integration_only_entry",
+        {"test_integration_only_entry": {"hello": "world"}},
+    )
+    assert expected_warning in caplog.text
+    caplog.clear()
+    hass.data.pop(setup.DATA_SETUP)
+    hass.config.components.remove("test_integration_only_entry")