Method testReadintoByteArray

Lib/test/test_io/test_fileio.py:88–96

(self)

    # verify readinto
    def testReadintoByteArray(self):
        self.f.write(bytes([1, 2, 0, 255]))
        self.f.close()

        ba = bytearray(b'abcdefgh')
        with self.FileIO(TESTFN, 'r') as f:
            n = f.readinto(ba)
        self.assertEqual(ba, b'\x01\x02\x00\xffefgh')
        self.assertEqual(n, 4)

    def _testReadintoMemoryview(self):
        self.f.write(bytes([1, 2, 0, 255]))