def test_index_with_bounds(self):
"""
Test the index method with bounds
"""
dlist = DiskList()
dlist.append('0')
dlist.append('1')
dlist.append('2')
dlist.append('3')
self.assertRaises(ValueError, lambda: dlist.index('2', 0, 1))
def test_index(self):
"""
Test the index method
"""
dlist = DiskList()
dlist.append('0')
dlist.append('1')
dlist.append('2')
dlist.append('3')
self.assertTrue(dlist.index('2') == 2)
