data grand lyon: implement reconfiguration flow (#170210)

tests/components/data_grand_lyon/test_config_flow.py

@@ -193,6 +193,81 @@ async def test_form_already_configured(
     assert result["reason"] == "already_configured"
 
 
+async def test_reconfigure_flow(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_get_tcl_passages: AsyncMock,
+) -> None:
+    """Test the reconfigure flow updates credentials and preserves subentries."""
+    mock_config_entry.add_to_hass(hass)
+    original_subentries = dict(mock_config_entry.subentries)
+
+    result = await mock_config_entry.start_reconfigure_flow(hass)
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "reconfigure"
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {CONF_PASSWORD: "new-pass"},
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "reconfigure_successful"
+    assert mock_config_entry.data == {
+        CONF_USERNAME: "user",
+        CONF_PASSWORD: "new-pass",
+    }
+    assert dict(mock_config_entry.subentries) == original_subentries
+
+
+@pytest.mark.parametrize(
+    ("side_effect", "error"),
+    [
+        (ClientConnectionError(), "cannot_connect"),
+        (ClientResponseError(None, None, status=401), "invalid_auth"),
+        (ClientResponseError(None, None, status=500), "cannot_connect"),
+        (RuntimeError("unexpected"), "unknown"),
+    ],
+    ids=["connection-error", "auth-401", "http-500", "unknown"],
+)
+async def test_reconfigure_flow_errors(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_get_tcl_passages: AsyncMock,
+    side_effect: Exception,
+    error: str,
+) -> None:
+    """Test the reconfigure flow shows errors and recovers."""
+    mock_config_entry.add_to_hass(hass)
+
+    result = await mock_config_entry.start_reconfigure_flow(hass)
+
+    mock_get_tcl_passages.side_effect = side_effect
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {CONF_PASSWORD: "new-pass"},
+    )
+
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "reconfigure"
+    assert result["errors"] == {"base": error}
+
+    mock_get_tcl_passages.side_effect = None
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {CONF_PASSWORD: "new-pass"},
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "reconfigure_successful"
+    assert mock_config_entry.data == {
+        CONF_USERNAME: "user",
+        CONF_PASSWORD: "new-pass",
+    }
+
+
 # Stop subentry tests