'''
STEP parameter scan
ray jumps into evanescence region (N⊥² < 0)
simple stigmatic beam, O1 mode
'''

from .. import TestCase, GrayTest


class Test(GrayTest, TestCase):
    tables = [4, 7, 48]

    def test_cutoff_detected(self):
        '''
        Test whether the cutoff was detected
        '''
        with open(str(Test.candidate / 'log')) as logfile:
            log = logfile.read()
        self.assertIn('[error] N⊥²<0, passed through a cutoff', log)