from django.test import SimpleTestCase

from django.test.client import FakePayload

class FakePayloadTests(SimpleTestCase):

    def test_write_after_read(self):

        payload = FakePayload()

        payload.read()

        msg = "Unable to write a payload after it's been read"

        with self.assertRaisesMessage(ValueError, msg):

            payload.write(b"abc")