Fix remaining TestPropertyLayer

A condition always is a function, never a mask (for now).

tests/test_space.py

@@ -300,15 +300,13 @@ def test_set_cells_no_condition(self):
         np.testing.assert_array_equal(self.layer.data, np.full((10, 10), 2))
 
     def test_set_cells_with_condition(self):
-        condition = np.full((10, 10), False)
-        condition[5, :] = True  # Only update the 5th row
+        self.layer.set_cell((5, 5), 1)
+        condition = lambda x: x == 0
         self.layer.set_cells(3, condition)
-        self.assertEqual(np.sum(self.layer.data[5, :] == 3), 10)
-        self.assertEqual(np.sum(self.layer.data != 3), 90)
-
-    def test_set_cells_invalid_condition(self):
-        with self.assertRaises(ValueError):
-            self.layer.set_cells(4, condition=np.full((5, 5), False))  # Invalid shape
+        self.assertEqual(self.layer.data[5, 5], 1)
+        self.assertEqual(self.layer.data[0, 0], 3)
+        # Check if the sum is correct
+        self.assertEqual(np.sum(self.layer.data), 3*99+1)
 
     # Modify Cells Test
     def test_modify_cell_lambda(self):