tests: fix Enum initialization (#7)

* tests: fix Enum initialization

Signed-off-by: Vincent Koppen <vincent.koppen@alliander.com>

* Update tests/unit/model/grids/test_grid_search.py

Co-authored-by: Thijs Baaijen <13253091+Thijss@users.noreply.github.com>
Signed-off-by: Vincent Koppen <53343926+vincentkoppen@users.noreply.github.com>

---------

Signed-off-by: Vincent Koppen <vincent.koppen@alliander.com>
Signed-off-by: Vincent Koppen <53343926+vincentkoppen@users.noreply.github.com>
Co-authored-by: Thijs Baaijen <13253091+Thijss@users.noreply.github.com>

Author: vincentkoppen

tests/unit/model/grids/test_grid_search.py

@@ -13,7 +13,7 @@
 
 def test_grid_get_nearest_substation_node(basic_grid):
     substation_node = basic_grid.get_nearest_substation_node(node_id=103)
-    assert NodeType.SUBSTATION_NODE == NodeType(substation_node.node_type)
+    assert NodeType.SUBSTATION_NODE == substation_node.node_type
 
 
 def test_grid_get_nearest_substation_node_no_substation(basic_grid):