Nbands convergence check (vasp)

Transfer pyiron/pyiron#1080

Author: jan-janssen

tests/sphinx/test_base.py

@@ -542,6 +542,7 @@ def test_collect_2_5(self):
 
     def test_check_band_occupancy(self):
         self.assertTrue(self.sphinx_2_5.output.check_band_occupancy())
+        self.assertTrue(self.sphinx_2_5.nbands_convergence_check())
 
     def test_collect_2_3(self):
         file_location = os.path.join(