add layout test

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

Author: Thijss

tests/unit/visualizer/test_layout.py

@@ -0,0 +1,11 @@
+# SPDX-FileCopyrightText: Contributors to the Power Grid Model project <[email protected]>
+#
+# SPDX-License-Identifier: MPL-2.0
+
+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