def test_roundtrip_translation():
sio1 = StringIO(u'a\nb', newline='\r\n')
pos = sio1.seek(1)
assert sio1.getvalue() == u'a\r\nb'
state = sio1.__getstate__()
sio2 = StringIO()
sio2.__setstate__(state)
assert sio2.getvalue() == u'a\r\nb'
assert sio2.tell() == pos
def test_getstate():
sio = StringIO()
state = sio.__getstate__()
assert len(state) == 4
assert isinstance(state[0], unicode)
assert isinstance(state[1], str)
assert isinstance(state[2], int)
assert state[3] is None or isinstance(state[3], dict)
sio.close()
raises(ValueError, sio.__getstate__)
def test_roundtrip_state():
s = u'12345678'
sio1 = StringIO(s)
sio1.foo = 42
sio1.seek(2)
assert sio1.getvalue() == s
state = sio1.__getstate__()
sio2 = StringIO()
sio2.__setstate__(state)
assert sio2.getvalue() == s
assert sio2.foo == 42
assert sio2.tell() == 2
