def test_str_to_layers_positive01(self):
src = '100-50'
true_res = [100, 50]
calc_res = str_to_layers(src)
self.assertEqual(true_res, calc_res)
def test_str_to_layers_negative03(self):
src = '100-0-50'
true_err_msg = re.escape(
'`100-0-50` is wrong description of layer sizes!')
with self.assertRaisesRegex(ValueError, true_err_msg):
_ = str_to_layers(src)