使用 Twisted 和 inlineCallbacks 进行测试 [英] Testing with Twisted and inlineCallbacks
本文介绍了使用 Twisted 和 inlineCallbacks 进行测试的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
这是我的函数定义:
@defer.inlineCallbacks
def get_order(order_id):
# do some db operations...
defer.returnValue(order_details)
我想做的是使用Twisted的试用版来测试这个功能:
What I want to do is to test this function using Twisted's trial:
from twisted.trial import unittest
from twisted.internet import defer
class OrderTest(unittest.TestCase):
@defer.inlineCallbacks
def test_order(self):
order = yield get_order(5)
raise Exception('FAIL FAIL!!') # this should fail, but never does
self.assertEqual(order.id, 6)
我很困惑..我把我能找到的关于 Twisted 和 Trial 的所有文档都涂红了,但找不到如何使它起作用.
I'm very confused.. I red all the documents that I could find about Twisted and trial but couldn't find how to make this work.
推荐答案
以下是使用 @defer.inlineCallbacks 和输出进行的工作测试.我已经把你的测试放在最后.它引发了一个异常.
Here are working tests with @defer.inlineCallbacks and the output. I've put your test in the end. It raises an exception.
from twisted.trial import unittest
from twisted.internet import defer
from twisted.internet import reactor
@defer.inlineCallbacks
def get_order(order_id):
d = defer.Deferred()
reactor.callLater(2, d.callback, order_id)
result = yield d # yielded deferreds will pause the generator
# after 2 sec
defer.returnValue(result) # the result of the deferred, which is order_id
class OrderTest(unittest.TestCase):
def test_order(self):
return get_order(6).addCallback(self.assertEqual, 6)
# This works
class OrderTestYourWay(unittest.TestCase):
@defer.inlineCallbacks
def test_order(self):
order_id = yield get_order(6)
defer.returnValue(self.assertEqual(order_id, 6))
# this fails, cause 6 != 5
class OrderTestYourWayWithFailure(unittest.TestCase):
@defer.inlineCallbacks
def test_order(self):
order_id = yield get_order(6)
defer.returnValue(self.assertEqual(order_id, 5))
# This is your test
# It raises an exception, which produces an error in the test
class OrderTestRaisingException(unittest.TestCase):
@defer.inlineCallbacks
def test_order(self):
order_id = yield get_order(5)
raise Exception('FAIL FAIL!!') # this should fail, but never does
self.assertEqual(order_id, 6)
<小时>
yavor@yavor-pc:~/src/tvstream/Misc/src/var$ trial OrderTest.py
OrderTest
OrderTest
test_order ... [OK]
OrderTestRaisingException
test_order ... [ERROR]
OrderTestYourWay
test_order ... [OK]
OrderTestYourWayWithFailure
test_order ... [FAIL]
===============================================================================
[FAIL]
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1020, in _inlineCallbacks
result = g.send(result)
File "/home/yavor/src/tvstream/Misc/src/var/OrderTest.py", line 34, in test_order
defer.returnValue(self.assertEqual(order_id, 5))
twisted.trial.unittest.FailTest: not equal:
a = 6
b = 5
OrderTest.OrderTestYourWayWithFailure.test_order
===============================================================================
[ERROR]
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1020, in _inlineCallbacks
result = g.send(result)
File "/home/yavor/src/tvstream/Misc/src/var/OrderTest.py", line 40, in test_order
raise Exception('FAIL FAIL!!') # this should fail, but never does
exceptions.Exception: FAIL FAIL!!
OrderTest.OrderTestRaisingException.test_order
-------------------------------------------------------------------------------
Ran 4 tests in 8.016s
FAILED (failures=1, errors=1, successes=2)
这篇关于使用 Twisted 和 inlineCallbacks 进行测试的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文