我有一个wxpython对话框,在单击确定按钮时引发TypeError异常。我想用unittest测试异常的发生,但测试不能按预期工作。输出显示引发异常。总之单元测试通知测试失败:unittest:wxpython的事件方法会引发异常,但assertRaises不会检测到它
"C:\Program Files (x86)\Python\python.exe" test.py
Traceback (most recent call last):
File "test.py", line 22, in on_ok
raise TypeError('TypeError raised')
TypeError: TypeError raised
F
======================================================================
FAIL: test_should_raise (__main__.CDlgTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "test.py", line 34, in test_should_raise
self._dut.m_button_ok.GetEventHandler().ProcessEvent(event)
AssertionError: TypeError not raised
----------------------------------------------------------------------
Ran 1 test in 0.005s
FAILED (failures=1)
这里是我的代码缩减样本:
import unittest
import wx
class CDlgBase (wx.Dialog):
"""The UI"""
def __init__(self, parent):
wx.Dialog.__init__ (self, parent)
bSizerTest = wx.BoxSizer(wx.VERTICAL)
self.m_button_ok = wx.Button(self, wx.ID_ANY)
bSizerTest.Add(self.m_button_ok, 0)
self.SetSizer(bSizerTest)
# Connect Events
self.m_button_ok.Bind(wx.EVT_BUTTON, self.on_ok)
def on_ok(self, event):
event.Skip()
class CDlg(CDlgBase) :
"""The dialog"""
def __init__(self, parent):
super(CDlg, self).__init__(parent)
def on_ok(self, event):
# The exception should be verified in the test `test_should_raise()`.
raise TypeError('TypeError raised')
class CDlgTest(unittest.TestCase) :
"""The test class"""
def setUp(self):
self._dut = CDlg(None)
def test_should_raise(self):
"""The test to verify raising the TypeError exception in the event
method `on_ok()`. this is the test method wich works not as expected."""
event = wx.CommandEvent(wx.EVT_BUTTON.evtType[0])
event.SetEventObject(self._dut.m_button_ok)
with self.assertRaises(TypeError) :
"""Simulate an "OK" click. `on_ok()` will be executed
and raises the TypeError exception."""
self._dut.m_button_ok.GetEventHandler().ProcessEvent(event)
if __name__ == '__main__':
app = wx.App()
tests = [ unittest.TestLoader().loadTestsFromTestCase(CDlgTest) ]
unittest.TextTestRunner(verbosity=2, failfast=True).run(unittest.TestSuite(tests))
有人可以帮我找出我做错了什么?
我很好奇这个解决方案。据我的理解,这个异常在另一个线程中引发,并被wx框架捕获,可能它的踪迹被转储到'stdout'。 –
从另一个python论坛我收到以下答案:这是测试GUI中的一个普遍问题。事件处理程序中抛出的异常不应该影响整个程序。这是调度程序捕获它们并且不会将它们转发到测试例程的原因。事件处理程序应该不超过应该在没有GUI的情况下单独测试的薄层。 – Humbalan