class C:

    def test(self) -> None:
        with patch("black.out", print):
            self.assertEqual(
                unstyle(str(report)), '1 file reformatted, 1 file failed to reformat.'
            )
            self.assertEqual(
                unstyle(str(report)),
                '1 file reformatted, 1 file left unchanged, 1 file failed to reformat.',
            )
            self.assertEqual(
                unstyle(str(report)),
                '2 files reformatted, 1 file left unchanged, '
                '1 file failed to reformat.',
            )
            self.assertEqual(
                unstyle(str(report)),
                '2 files reformatted, 2 files left unchanged, '
                '2 files failed to reformat.',
            )