def test_count(self):
r = Range(1, 10)
self.assertEqual(r.count(9), 1)
self.assertEqual(r.count(10), 0)
r = Range(1, 10, 3)
self.assertEqual(r.count(7), 1)
self.assertEqual(r.count(9), 0)
r = Range(-5, 5)
self.assertEqual(r.count(4), 1)
self.assertEqual(r.count(5), 0)
r = Range(-5, 5, 3)
self.assertEqual(r.count(4), 1)
self.assertEqual(r.count(5), 0)
r = Range(5, -5, -1)
self.assertEqual(r.count(-4), 1)
self.assertEqual(r.count(-5), 0)
r = Range(5, -5, -3)
self.assertEqual(r.count(-4), 1)
self.assertEqual(r.count(-5), 0)
r = Range(-1, -10, -1)
self.assertEqual(r.count(-9), 1)
self.assertEqual(r.count(-10), 0)
r = Range(-1, -10, -3)
self.assertEqual(r.count(-7), 1)
self.assertEqual(r.count(-9), 0)
def test_large_nums(self):
import sys
ln = sys.maxsize + 1
r = Range(ln, 3 * ln, 1)
o = range(ln, 3 * ln, 1)
self.assertEqual(r._len, 2 * ln)
self.assertEqual(r[0], o[0])
self.assertEqual(r[-1], r[-1])
self.assertIn(2 * ln, r)
self.assertEqual(r.count(2 * ln), 1)
self.assertEqual(r.index(2 * ln), o.index(2 * ln))