Add basic test for get_app_layout

Signed-off-by: Thijs Baaijen <[email protected]>

Author: Thijss

tests/unit/visualizer/test_layout.py

@@ -1,11 +1,17 @@
 # SPDX-FileCopyrightText: Contributors to the Power Grid Model project <[email protected]>
 #
 # SPDX-License-Identifier: MPL-2.0
-
+from power_grid_model_ds._core.model.grids.base import Grid
+from power_grid_model_ds._core.data_source.generator.grid_generators import RadialGridGenerator
+from power_grid_model_ds._core.visualizer.app import get_app_layout
 from power_grid_model_ds._core.visualizer.layout.cytoscape_html import get_cytoscape_html
 
 
 def test_get_cytoscape_html():
     elements = [{"data": {"id": "1", "group": "node"}}]
     cyto_html = get_cytoscape_html("preset", elements)
     assert cyto_html.children.elements == elements
+
+def test_get_app_layout():
+    grid = RadialGridGenerator(Grid).run()
+    assert get_app_layout(grid)