實際寫代碼的時候會遇到這樣的問題,以登錄登出爲例,登錄失敗後我們怎麼跳過登出的用例,因爲登錄失敗後測試登出沒有意義結果裏的報錯也沒有意義。這裏主要使用兩個知識點,裝飾器和 TestCase中的_outcome.result (python2中爲_resultForDoCleanups),裝飾器怎麼用具體原理大家自己百度哦,具體示例代碼如下
import unittest
from functools import wraps
def skip_dependon(depend=""):
"""
:param depend: 依賴的用例函數名,默認爲空
:return: wraper_func
"""
def wraper_func(test_func):
@wraps(test_func) # @wraps:避免被裝飾函數自身的信息丟失
def inner_func(self):
if depend == test_func.__name__:
raise ValueError("{} cannot depend on itself".format(depend))
# print("self._outcome", self._outcome.__dict__)
# 此方法適用於python3.4 +
# 如果是低版本的python3,請將self._outcome.result修改爲self._outcomeForDoCleanups
# 如果你是python2版本,請將self._outcome.result修改爲self._resultForDoCleanups
failures = str([fail[0] for fail in self._outcome.result.failures])
print("111111111111111111111", failures)
errors = str([error[0] for error in self._outcome.result.errors])
print("2222222222222222222222", errors)
skipped = str([error[0] for error in self._outcome.result.skipped])
print("333333333333333333333", skipped)
flag = (depend in failures) or (depend in errors) or (depend in skipped)
if failures.find(depend) != -1:
# 輸出結果 [<__main__.TestDemo testMethod=test_login>]
# 如果依賴的用例名在failures中,則判定爲失敗,以下兩種情況同理
# find()方法:查找子字符串,若找到返回從0開始的下標值,若找不到返回 - 1
test = unittest.skipIf(flag, "{} failed".format(depend))(test_func)
elif errors.find(depend) != -1:
test = unittest.skipIf(flag, "{} error".format(depend))(test_func)
elif skipped.find(depend) != -1:
test = unittest.skipIf(flag, "{} skipped".format(depend))(test_func)
else:
test = test_func
return test(self)
return inner_func
return wraper_func
class TestDemo(unittest.TestCase):
@classmethod
def setUpClass(cls):
print("setupclass")
def setUp(self):
print("setup")
def test_login(self):
print("test_login")
self.assertEqual(1, 2) # 這裏讓登錄判斷爲失敗
@skip_dependon(depend="test_login")
def test_logout(self):
print("test_logout")
self.assertEqual(1, 1)
@skip_dependon(depend="test_logout")
def test_1(self):
print("test1")
@skip_dependon(depend="test_1")
def test_2(self):
print("test2")
def tearDown(self):
print("teardown")
@classmethod
def tearDownClass(cls):
print("teardownclass")
if __name__ == '__main__':
testsuite = unittest.TestSuite()
testsuite.addTest(TestDemo("test_login"))
testsuite.addTest(TestDemo("test_logout"))
testsuite.addTest(TestDemo("test_1"))
testsuite.addTest(TestDemo("test_2"))
runner = unittest.TextTestRunner()
runner.run(testsuite)
結果如下: