求助：python使用discover时返回有问题

pj764169118 · 发表于 2015-10-12 16:40:34

为什么返回的是importfailure而不是定义的test用例,有大神知道吗？
主要代码如下
#coding=utf-8
#导入包
import csv,os,unittest
#获取文件所在目录
path = os.path.abspath(os.path.join(os.path.dirname(__file__)))
...
#定义测试用例文件夹
my_testfile=path+'\\test_case'
#获取自动化测试用例
def alltestnames():
testunit=unittest.TestSuite()
#定义discover方法
discover=unittest.defaultTestLoader.discover(
      my_testfile,
pattern ='ktv4_*.py',
top_level_dir=None)
print ('discover : %s'%discover)
for test_suite in discover:
print ('test_suite : %s'%test_suite)
for test_case in test_suite:
print('test_case : %s'%test_case)
testunit.addTests(test_case)
print ('testunit : %s'%testunit)
return testunit
alltestnames()
...
打印返回结果：
discover : <unittest.suite.TestSuite tests=[<unittest.suite.TestSuite tests=[<unittest.loader.ModuleImportFailure testMethod=ktv4_login>]>]>
test_suite : <unittest.suite.TestSuite tests=[<unittest.loader.ModuleImportFailure testMethod=ktv4_login>]>
test_case : ktv4_login (unittest.loader.ModuleImportFailure)
Traceback (most recent call last):
  File "parameters.py", line 34, in <module>
alltestnames()
  File "parameters.py", line 31, in alltestnames
testunit.addTests(test_case)
  File "D:\Python33\lib\unittest\suite.py", line 56, in addTests
for test in tests:
TypeError: 'ModuleImportFailure' object is not iterable