def test_issubset(self):
l1 = random.sample(range(10000), 2000)
l2 = random.sample(l1, 1000)
s1 = IntSet(l2)
s2 = IntSet(l1)
self.assertTrue(s1.issubset(s2))
s1.add(100001)
self.assertFalse(s1.issubset(s2))
self.assertRaises(TypeError, s1.issubset, "123")
def test_empty_subsets_issubset(self):
s = IntSet([])
t = IntSet([])
self.assertEqual(t.issubset(s), True)
self.assertEqual(s.issubset(t), True)
def test_one_empty_issubset(self):
s = IntSet([])
t = IntSet([1, 2, 3, 4, 5, 6, 7])
self.assertEqual(t.issubset(s), True)
self.assertEqual(s.issubset(t), False)
def test_issubset(self):
s = IntSet([1, 2, 3, 4])
t = IntSet([1, 2, 3])
self.assertEqual(t.issubset(s), False)
self.assertEqual(s.issubset(t), True)
