test_fileinput.py 文件源码

def test_file_opening_hook(self):
        try:
            # cannot use openhook and inplace mode
            fi = FileInput(inplace=1, openhook=lambda f, m: None)
            self.fail("FileInput should raise if both inplace "
                             "and openhook arguments are given")
        except ValueError:
            pass
        try:
            fi = FileInput(openhook=1)
            self.fail("FileInput should check openhook for being callable")
        except ValueError:
            pass
        # XXX The rot13 codec was removed.
        #     So this test needs to be changed to use something else.
        #     (Or perhaps the API needs to change so we can just pass
        #     an encoding rather than using a hook?)
##         try:
##             t1 = writeTmp(1, ["A\nB"], mode="wb")
##             fi = FileInput(files=t1, openhook=hook_encoded("rot13"))
##             lines = list(fi)
##             self.assertEqual(lines, ["N\n", "O"])
##         finally:
##             remove_tempfiles(t1)