diff --git a/tests/components/syncthru/conftest.py b/tests/components/syncthru/conftest.py
index 6563e0f7b41..be5896c4956 100644
--- a/tests/components/syncthru/conftest.py
+++ b/tests/components/syncthru/conftest.py
@@ -12,6 +12,16 @@ from homeassistant.const import CONF_NAME, CONF_URL
 from tests.common import MockConfigEntry, load_json_object_fixture
 
 
+@pytest.fixture
+def mock_setup_entry() -> Generator[AsyncMock]:
+    """Override async_setup_entry."""
+    with patch(
+        "homeassistant.components.syncthru.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        yield mock_setup_entry
+
+
 @pytest.fixture
 def mock_syncthru() -> Generator[AsyncMock]:
     """Mock the SyncThru class."""
diff --git a/tests/components/syncthru/test_config_flow.py b/tests/components/syncthru/test_config_flow.py
index c551c94506e..e535ba50470 100644
--- a/tests/components/syncthru/test_config_flow.py
+++ b/tests/components/syncthru/test_config_flow.py
@@ -1,11 +1,12 @@
 """Tests for syncthru config flow."""
 
-from unittest.mock import AsyncMock, patch
+from unittest.mock import AsyncMock
 
 from pysyncthru import SyncThruAPINotSupported
 
 from homeassistant import config_entries
 from homeassistant.components.syncthru.const import DOMAIN
+from homeassistant.config_entries import SOURCE_SSDP, SOURCE_USER
 from homeassistant.const import CONF_NAME, CONF_URL
 from homeassistant.core import HomeAssistant
 from homeassistant.data_entry_flow import FlowResultType
@@ -26,15 +27,26 @@ FIXTURE_USER_INPUT = {
 }
 
 
-async def test_show_setup_form(hass: HomeAssistant, mock_syncthru: AsyncMock) -> None:
-    """Test that the setup form is served."""
+async def test_full_flow(
+    hass: HomeAssistant, mock_syncthru: AsyncMock, mock_setup_entry: AsyncMock
+) -> None:
+    """Test the full flow."""
     result = await hass.config_entries.flow.async_init(
-        DOMAIN, context={"source": config_entries.SOURCE_USER}, data=None
+        DOMAIN, context={"source": SOURCE_USER}
     )
 
     assert result["type"] is FlowResultType.FORM
     assert result["step_id"] == "user"
 
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input=FIXTURE_USER_INPUT,
+    )
+
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["data"] == FIXTURE_USER_INPUT
+    assert result["result"].unique_id is None
+
 
 async def test_already_configured_by_url(
     hass: HomeAssistant, mock_syncthru: AsyncMock
@@ -82,39 +94,40 @@ async def test_unknown_state(hass: HomeAssistant, mock_syncthru: AsyncMock) -> N
     mock_syncthru.is_unknown_state.return_value = True
     result = await hass.config_entries.flow.async_init(
         DOMAIN,
-        context={"source": config_entries.SOURCE_USER},
-        data=FIXTURE_USER_INPUT,
+        context={"source": SOURCE_USER},
+    )
+
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+    assert not result["errors"]
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input=FIXTURE_USER_INPUT,
     )
 
     assert result["type"] is FlowResultType.FORM
     assert result["step_id"] == "user"
     assert result["errors"] == {CONF_URL: "unknown_state"}
 
+    mock_syncthru.is_unknown_state.return_value = False
 
-async def test_success(hass: HomeAssistant, mock_syncthru: AsyncMock) -> None:
-    """Test successful flow provides entry creation data."""
-
-    with patch(
-        "homeassistant.components.syncthru.async_setup_entry", return_value=True
-    ) as mock_setup_entry:
-        result = await hass.config_entries.flow.async_init(
-            DOMAIN,
-            context={"source": config_entries.SOURCE_USER},
-            data=FIXTURE_USER_INPUT,
-        )
-
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input=FIXTURE_USER_INPUT,
+    )
     assert result["type"] is FlowResultType.CREATE_ENTRY
-    assert result["data"][CONF_URL] == FIXTURE_USER_INPUT[CONF_URL]
-    assert len(mock_setup_entry.mock_calls) == 1
 
 
-async def test_ssdp(hass: HomeAssistant, mock_syncthru: AsyncMock) -> None:
+async def test_ssdp(
+    hass: HomeAssistant, mock_syncthru: AsyncMock, mock_setup_entry: AsyncMock
+) -> None:
     """Test SSDP discovery initiates config properly."""
 
     url = "http://192.168.1.2/"
     result = await hass.config_entries.flow.async_init(
         DOMAIN,
-        context={"source": config_entries.SOURCE_SSDP},
+        context={"source": SOURCE_SSDP},
         data=SsdpServiceInfo(
             ssdp_usn="mock_usn",
             ssdp_st="mock_st",
@@ -135,3 +148,44 @@ async def test_ssdp(hass: HomeAssistant, mock_syncthru: AsyncMock) -> None:
     for k in result["data_schema"].schema:
         if k == CONF_URL:
             assert k.default() == url
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={CONF_URL: url, CONF_NAME: "Printer"},
+    )
+
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["data"] == {CONF_URL: url, CONF_NAME: "Printer"}
+    assert result["result"].unique_id == "uuid:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
+
+
+async def test_ssdp_already_configured(
+    hass: HomeAssistant, mock_syncthru: AsyncMock, mock_config_entry: MockConfigEntry
+) -> None:
+    """Test SSDP discovery initiates config properly."""
+
+    mock_config_entry.add_to_hass(hass)
+    hass.config_entries.async_update_entry(
+        mock_config_entry, unique_id="uuid:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
+    )
+
+    url = "http://192.168.1.2/"
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_SSDP},
+        data=SsdpServiceInfo(
+            ssdp_usn="mock_usn",
+            ssdp_st="mock_st",
+            ssdp_location="http://192.168.1.2:5200/Printer.xml",
+            upnp={
+                ATTR_UPNP_DEVICE_TYPE: "urn:schemas-upnp-org:device:Printer:1",
+                ATTR_UPNP_MANUFACTURER: "Samsung Electronics",
+                ATTR_UPNP_PRESENTATION_URL: url,
+                ATTR_UPNP_SERIAL: "00000000",
+                ATTR_UPNP_UDN: "uuid:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
+            },
+        ),
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "already_configured"