def test_wrap():
cb1 = Mock()
cb2 = Mock()
x = wrap(promise(cb1))
x(1, y=2)
cb1.assert_called_with(1, y=2)
p2 = promise(cb2)
x(p2)
p2()
cb1.assert_called_with(cb2())
def test_wrap():
cb1 = Mock()
cb2 = Mock()
x = wrap(promise(cb1))
x(1, y=2)
cb1.assert_called_with(1, y=2)
p2 = promise(cb2)
x(p2)
p2()
cb1.assert_called_with(cb2())
def test_example(self):
_pending = deque()
class Protocol:
"""难以理解"""
def __init__(self):
self.buffer = []
def read(self, size, callback=None):
callback = callback or promise()
_pending.append((size, callback))
return callback
def read_header(self, callback=None):
return self.read(4, callback)
def read_body(self, header, callback=None):
body_size, = unpack('>L', header)
return self.read(body_size, callback)
def prepare_body(self, value):
self.buffer.append(value)
proto = Protocol()
# 读头，读body，准备数据
proto.read_header().then(proto.read_body).then(wrap(
proto.prepare_body))
while _pending:
size, callback = _pending.popleft()
if size == 4:
callback(pack('>L', 1231012302))
else:
callback('Hello world')
assert proto.buffer
assert proto.buffer[0] == 'Hello world'
def test_example(self):
_pending = deque()
class Protocol(object):
def __init__(self):
self.buffer = []
def read(self, size, callback=None):
callback = callback or promise()
_pending.append((size, callback))
return callback
def read_header(self, callback=None):
return self.read(4, callback)
def read_body(self, header, callback=None):
body_size, = unpack('>L', header)
return self.read(body_size, callback)
def prepare_body(self, value):
self.buffer.append(value)
proto = Protocol()
proto.read_header().then(
proto.read_body).then(wrap(proto.prepare_body))
while _pending:
size, callback = _pending.popleft()
if size == 4:
callback(pack('>L', 1231012302))
else:
callback('Hello world')
assert proto.buffer
assert proto.buffer[0] == 'Hello world'