Method flush

Lib/test/test_gzip.py:865–867

(self, mode=-1)

            def compress(self, data):
                return b''
            def flush(self, mode=-1):
                self.modes.append(mode)
                return b''
        b = io.BytesIO()
        fc = FakeCompressor()
        with gzip.GzipFile(fileobj=b, mode='w') as f: