def test_bufview_readinto(buftype):
buf = buftype(30)
buf[:] = b"a" * 30
r = io.BytesIO(b"b" * 20)
view = compat.bufview(buf, 10, 10)
r.readinto(view)
assert buf[:] == b"a" * 10 + b"b" * 10 + b"a" * 10
def test_bufview_write(buftype):
buf = buftype(30)
buf[:] = b"a" * 10 + b"b" * 10 + b"c" * 10
view = compat.bufview(buf, 10, 10)
w = io.BytesIO()
w.write(view)
assert w.getvalue() == b"b" * 10
def test_bufview_readinto(buftype):
buf = buftype(30)
buf[:] = b"a" * 30
r = io.BytesIO(b"b" * 20)
view = compat.bufview(buf, 10, 10)
r.readinto(view)
assert buf[:] == b"a" * 10 + b"b" * 10 + b"a" * 10
def test_bufview_write(buftype):
buf = buftype(30)
buf[:] = b"a" * 10 + b"b" * 10 + b"c" * 10
view = compat.bufview(buf, 10, 10)
w = io.BytesIO()
w.write(view)
assert w.getvalue() == b"b" * 10
def test_bufview_readwrite(buftype):
buf = buftype(30)
buf[:] = b"a" * 30
view = compat.bufview(buf, 10, 10)
view[:] = b"b" * 10
assert buf[:] == b"a" * 10 + b"b" * 10 + b"a" * 10
def test_bufview_readonly(buftype):
buf = buftype(30)
buf[:] = b"a" * 10 + b"b" * 10 + b"c" * 10
view = compat.bufview(buf, 10, 10)
assert view[:] == b"b" * 10
def test_bufview_readwrite(buftype):
buf = buftype(30)
buf[:] = b"a" * 30
view = compat.bufview(buf, 10, 10)
view[:] = b"b" * 10
assert buf[:] == b"a" * 10 + b"b" * 10 + b"a" * 10
def test_bufview_readonly(buftype):
buf = buftype(30)
buf[:] = b"a" * 10 + b"b" * 10 + b"c" * 10
view = compat.bufview(buf, 10, 10)
assert view[:] == b"b" * 10