Fix samsungtv yaml import without configured name (#51204)

homeassistant/components/samsungtv/config_flow.py

@@ -173,7 +173,7 @@ class SamsungTVConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             )
         except socket.gaierror as err:
             raise data_entry_flow.AbortFlow(RESULT_UNKNOWN_HOST) from err
-        self._name = user_input[CONF_NAME]
+        self._name = user_input.get(CONF_NAME, self._host)
         self._title = self._name
 
     async def async_step_user(self, user_input=None):

tests/components/samsungtv/test_config_flow.py

@@ -54,6 +54,9 @@ MOCK_IMPORT_DATA = {
     CONF_NAME: "fake",
     CONF_PORT: 55000,
 }
+MOCK_IMPORT_DATA_WITHOUT_NAME = {
+    CONF_HOST: "fake_host",
+}
 MOCK_IMPORT_WSDATA = {
     CONF_HOST: "fake_host",
     CONF_NAME: "fake",
@@ -509,6 +512,26 @@ async def test_import_legacy(hass: HomeAssistant):
     assert result["result"].unique_id is None
 
 
+async def test_import_legacy_without_name(hass: HomeAssistant):
+    """Test importing from yaml without a name."""
+    with patch(
+        "homeassistant.components.samsungtv.config_flow.socket.gethostbyname",
+        return_value="fake_host",
+    ):
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN,
+            context={"source": config_entries.SOURCE_IMPORT},
+            data=MOCK_IMPORT_DATA_WITHOUT_NAME,
+        )
+    await hass.async_block_till_done()
+    assert result["type"] == "create_entry"
+    assert result["title"] == "fake_host"
+    assert result["data"][CONF_METHOD] == METHOD_LEGACY
+    assert result["data"][CONF_HOST] == "fake_host"
+    assert result["data"][CONF_MANUFACTURER] == "Samsung"
+    assert result["result"].unique_id is None
+
+
 async def test_import_websocket(hass: HomeAssistant):
     """Test importing from yaml with hostname."""
     with patch(