test_fileinput.py 文件源码

def test_fileno(self):
        t1 = t2 = None
        try:
            t1 = writeTmp(1, ["A\nB"])
            t2 = writeTmp(2, ["C\nD"])
            fi = FileInput(files=(t1, t2))
            self.assertEqual(fi.fileno(), -1)
            line =next( fi)
            self.assertNotEqual(fi.fileno(), -1)
            fi.nextfile()
            self.assertEqual(fi.fileno(), -1)
            line = list(fi)
            self.assertEqual(fi.fileno(), -1)
        finally:
            remove_tempfiles(t1, t2)