How to use the fileseq.FileSequence.conformPadding function in Fileseq

Case('$F', '@'),
            Case('$F1', '@'),
            Case('$F2', '@@'),
            Case('$F4', '#'),
            Case('', ''),
            Case('foo', 'foo', error=True),
        ]

        for case in tests:
            
            if case.error:
                with self.assertRaises(ValueError):
                    FileSequence.conformPadding(case.src)
                continue

            actual = FileSequence.conformPadding(case.src)
            self.assertEqual(actual, case.expected)
            self.assertNativeStr(actual)

Case('%00d', '@'),
            Case('%1d', '@'),
            Case('%d', '@'),
            Case('$F', '@'),
            Case('$F1', '@'),
            Case('$F2', '@@'),
            Case('$F4', '#'),
            Case('', ''),
            Case('foo', 'foo', error=True),
        ]

        for case in tests:
            
            if case.error:
                with self.assertRaises(ValueError):
                    FileSequence.conformPadding(case.src)
                continue

            actual = FileSequence.conformPadding(case.src)
            self.assertEqual(actual, case.expected)
            self.assertNativeStr(actual)

def testNativeStr(self):
        seq = FileSequence("/foo/boo.1-5#.exr")
        self.assertNativeStr(seq.dirname())
        self.assertNativeStr(seq.basename())
        self.assertNativeStr(seq.padding())
        self.assertNativeStr(seq.extension())
        self.assertNativeStr(seq.extension())
        self.assertNativeStr(seq.format('{basename}'))
        self.assertNativeStr(seq.frame(1))
        self.assertNativeStr(seq.frameRange())
        self.assertNativeStr(seq.index(1))
        self.assertNativeStr(seq.invertedFrameRange())

        self.assertNativeStr(FileSequence.conformPadding('#'))
        self.assertNativeStr(FileSequence.getPaddingChars(4))