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.",
            )