def test_iter(self):
sc = StreamCSVContent(None, iter([1, 2, 3]))
self.assertTrue(isinstance(iter(sc), StreamCSVContent))
def test_next_header(self):
sc = StreamCSVContent("header", iter([1, 2, 3]))
content = [item for item in sc]
self.assertListEqual(["header", 1, 2, 3], content)