我在使用Unittest模块测试我的程序时遇到了以下错误：
File "/usr/lib/python2.7/unittest/case.py", line 493, in _getAssertEqualityFunc
asserter = self._type_equality_funcs.get(type(first))
AttributeError: 'Utility' object has no attribute '_type_equality_funcs'
当我尝试创建一个通用类并尝试通过通用类实用程序测试函数执行时，会出现以上错误。但是使用普通的Unittest类实现时没有出现任何错误。
以下是程序的详细解释，它可以在没有任何错误的情况下执行。
class BaseTestCase(unittest.TestCase):
def __init__(self, methodName='runTest', param=None):
super(BaseTestCase, self).__init__(methodName)
self.param = param
@staticmethod
def parametrize(testcase_klass, param=None):
testloader = unittest.TestLoader()
testnames = testloader.getTestCaseNames(testcase_klass)
suite = unittest.TestSuite()
for name in testnames:
suite.addTest(testcase_klass(name, param=param))
return suite
现在我正在继承BaseTestCase类并调用测试用例..
class salesgrowth_DevInt(BaseTestCase):
def setUp(self):
print "constructor"
pwd = os.getcwd()
def test4_refactoring(self,log):
if (STATUS.lower() == "completed" or STATUS == "Actor : SUCCESS"):`enter code here`
self.assertEqual(os.stat(OUTPUT + '/tes1.txt').st_size, 0,
'employee count is not matching with master data . Different entries are in test1.txt\n')
到目前为止，一切正常。
现在有许多其他测试用例，例如salesgrowth_DevInt测试用例，它们继承BaseTestCase并执行test4_refactoring测试用例（例如这里删除了几行代码），为避免重复的代码，我创建了一个通用类Utility，其中包括服务于所有测试用例（如salesgrowth_DevInt）的test4_refactoring函数。
以下是通用工具类代码：
import sys
import json, sys, os, argparse, commands, time, string, filecmp
import unittest
class Utility(object):
''' common utility class for common test cases operations'''
def __init__(self):
print "constructor"
pwd = os.getcwd()
print "Current working directlry %s\n" % pwd
global scriptpath
scriptpath = os.path.join(pwd, "src/Runner/")
maxDiff = int(80)
def test4_refactoring(self,STATUS,BASE,ANALYSIS_DIR,OUTPUT,log):
print "common function"
log.write('\n')
if (STATUS.lower() == "completed" or STATUS == "Actor : SUCCESS"):
self.assertEqual(os.stat(OUTPUT + '/tes1.txt').st_size, 0,
'employee count is not matching with master data . Different entries are in test1.txt\n')
but using utility code when i try to execute below statment
self.assertEqual(os.stat(OUTPUT + '/tes1.txt').st_size, 0,
'employee count is not matching with master data . Different entries are in test1.txt\n')
getting below errors
Traceback (most recent call last):
File "/src/testCases/salesgrowth_DevInt.py", line 96, in test4_refactoring
utils_obj.test4_refactoring(self.STATUS,self.BASE,self.ANALYSIS_DIR,self.OUTPUT,log)
File "/src/common/Utils.py", line 436, in test4_refactoring
'employee count is not matching with master data. Different entries are in test1.txt\n')
File "/usr/lib/python2.7/unittest/case.py", line 512, in assertEqual
assertion_func = self._getAssertEqualityFunc(first, second)
File "/usr/lib/python2.7/unittest/case.py", line 493, in _getAssertEqualityFunc
asserter = self._type_equality_funcs.get(type(first))
AttributeError: 'Utility' object has no attribute '_type_equality_funcs'
Please let me know if any one has any pointers or suggestion for above issue and what is wrong in above implementation.