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class AppTest(object):
spaceconfig = dict(usemodules=['__pypy__'])
def test_bytebuffer(self):
from __pypy__ import bytebuffer
b = bytebuffer(12)
assert len(b) == 12
b[3] = ord(b'!')
b[5] = ord(b'?')
assert b[2:7] == b'\x00!\x00?\x00'
b[9:] = b'+-*'
assert b[-1] == ord(b'*')
assert b[-2] == ord(b'-')
assert b[-3] == ord(b'+')
exc = raises(ValueError, "b[3:5] = b'abc'")
assert str(exc.value) == "cannot modify size of memoryview object"
b = bytebuffer(10)
b[1:3] = b'xy'
assert bytes(b) == b"\x00xy" + b"\x00" * 7
b[4:8:2] = b'zw'
assert bytes(b) == b"\x00xy\x00z\x00w" + b"\x00" * 3
def test_buffer_getslice_empty(self):
from __pypy__ import bytebuffer
b = bytebuffer(10)
assert b[1:0] == b''
def test_bytebuffer_object(self):
from __pypy__ import bytebuffer
b = bytebuffer(10)
assert b.obj is None
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