def test_of(self):
self.assertEqual(Stream.of(1, 2, 3).count(), 3)
self.assertTrue(Stream.of(1, 2, 3).findAny().isPresent())
self.assertEqual(Stream.of(1, 2, 3).findAny().get(), 1)
self.assertEqual(Stream.ofNullable(None), Stream.empty())
self.assertEqual(Stream.of(), Stream.empty())
def test_empty(self):
s = Stream.empty()
self.assertEqual(s.count(), 0)
def test_count(self):
self.assertEqual(Stream.of(1, 2, 3, 4).count(), 4)
self.assertEqual(Stream.empty().count(), 0)
self.assertEqual(Stream.generate(lambda: 1).limit(10).count(), 10)