python3 unittest
一、概念介绍:
unittest最核心的四部分是:TestCase,TestSuite,TestRunner,TestFixture;
TestCase:用户自定义的测试case的基类,在此类里填写需要写的测试方法; 调用run()方法,会依次调用setUp方法、执行用例的方法、tearDown方法。
TestSuite:测试用例集合,可以通过addTest()、addTests()方法手动增加Test Case,也可以通过TestLoader自动添加Test Case,TestLoader在添加用例时,会没有顺序。
TestRunner:运行测试用例的驱动类,可以执行TestCase,也可以执行TestSuite,执行后TestCase和TestSuite会自动管理TESTResult。
TestFixture:简单来说就是做一些测试过程中需要准备的东西,比如创建临时的数据库,文件和目录等,其中setUp()和setDown()是最常用的方法
整个的流程就是首先要写好TestCase,然后由TestLoader加载TestCase到TestSuite,然后由TestTestRunner来运行TestSuite,运行的结果保存在TextTestReusult中,整个过程集成在unittest.main模块中;
二、测试所有脚本代码:
# -*-encoding:utf-8 -*-
import unittest
import HTMLTestRunner
class T():
"""
被测试类
"""
def __init__(self, var1, var2):
self.var1 = var1
self.var2 = var2
def plus(self):
"""
被测试方法
:return:
"""
return self.var1 + self.var2
def minus(self):
return self.var1 - self.var2
def multiply(self):
return self.var1 * self.var2
def divide(self):
return self.var1 / self.var2
class Test1(unittest.TestCase):
"""
继承于unittest.TestCase;
"""
def setUp(self):
print('当前类的每个测试方法执行前先执行此方法')
def tearDown(self) -> None:
print('当前类的每个方法执行完成后执行此方法')
t = T(2, 1)
def test_plus(self):
"""
测试方法;
:return:
"""
print('Test1 plus method')
self.assertEqual(self.t.plus(), 3)
"""
添加断言来判断来判断结果是否执行成功;
"""
def test_minus(self):
print('Test1 minus method')
self.assertEqual(self.t.minus(), 1)
def test_multiply(self):
print('Test1 multiply method')
self.assertEqual(self.t.multiply(), 2)
def test_divide(self):
print('Test1 divide method')
self.assertEqual(self.t.divide(), 2)
class Test2(unittest.TestCase):
# @classmethod
# def setUpClass(self):
# print("execute setUpClass")
#
# @classmethod
# def tearDownClass(self):
# print("execute tearDownClass")
def setUp(self):
"""
每个测试方法均执行一次;
:return:
"""
print("execute setUp")
def tearDown(self):
print("execute tearDown")
@unittest.skipIf(True, '不需要执行')
def test_one(self):
# 这里因为使用了条件装饰器,在执行测试的时候会跳过;
print('execute test_one')
self.assertTrue('FOO'.isupper())
# @unittest.skip('这里也不需要执行')
def test_two(self):
# 这里因为使用了条件装饰器,在执行测试的时候会跳过;
print('execute test_two')
self.assertEqual(True, 0, msg='isnot equal')
if __name__ == '__main__':
print('进入了主方法')
suite = unittest.TestSuite()
suite.debug()
# Test2是要测试的类名,test_one是要执行的测试方法
# 执行其余的方法直接依照添加
suite.addTest(Test2("test_two"))
suite.addTest(Test2("test_one"))
suite.addTest(Test1("test_plus"))
suite.addTest(Test1("test_minus"))
suite.addTest(Test1("test_multiply"))
suite.addTest(Test1("test_divide"))
# suite.addTests()
runner = unittest.TextTestRunner()
print(suite.countTestCases())
filename = 'F:\\unit_test_result.html'
fb = open(filename, 'wb')
# runner = HtmlTestRunner.HTMLTestRunner(stream=fb, descriptions='测试报告', report_title='Title', add_timestamp=True)
runner = HTMLTestRunner.HTMLTestRunner(stream=fb, title="测试HTMLTestRunner", description="测试HTMLTestRunner",verbosity=2)
runner.run(suite)
fb.close()
三、执行单元测试的结果:
Testing started at 14:09 ...
C:\Users\wenlong\AppData\Local\Programs\Python\Python37\python.exe "C:\Program Files\JetBrains\PyCharm Community Edition 2020.1.2\plugins\python-ce\helpers\pycharm\_jb_unittest_runner.py" --path C:/Users/wenlong/PycharmProjects/无线项目 -- -v
Launching unittests with arguments python -m unittest discover -s C:/Users/wenlong/PycharmProjects/无线项目 -t C:\Users\wenlong\PycharmProjects\无线项目 -v in C:\Users\wenlong\PycharmProjects\无线项目
当前类的每个测试方法执行前先执行此方法
Test1 divide method
当前类的每个方法执行完成后执行此方法
当前类的每个测试方法执行前先执行此方法
Test1 minus method
当前类的每个方法执行完成后执行此方法
当前类的每个测试方法执行前先执行此方法
Test1 multiply method
当前类的每个方法执行完成后执行此方法
当前类的每个测试方法执行前先执行此方法
Test1 plus method
当前类的每个方法执行完成后执行此方法
Skipped: 不需要执行
execute setUp
execute test_two
execute tearDown
isnot equal
0 != True
Expected :True
Actual :0
<Click to see difference>
Traceback (most recent call last):
File "C:\Program Files\JetBrains\PyCharm Community Edition 2020.1.2\plugins\python-ce\helpers\pycharm\teamcity\diff_tools.py", line 32, in _patched_equals
old(self, first, second, msg)
File "C:\Users\wenlong\AppData\Local\Programs\Python\Python37\lib\unittest\case.py", line 852, in assertEqual
assertion_func(first, second, msg=msg)
File "C:\Users\wenlong\AppData\Local\Programs\Python\Python37\lib\unittest\case.py", line 845, in _baseAssertEqual
raise self.failureException(msg)
AssertionError: True != 0 : isnot equal
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\wenlong\AppData\Local\Programs\Python\Python37\lib\unittest\case.py", line 59, in testPartExecutor
yield
File "C:\Users\wenlong\AppData\Local\Programs\Python\Python37\lib\unittest\case.py", line 628, in run
testMethod()
File "C:\Users\wenlong\PycharmProjects\无线项目\utest\test_1.py", line 100, in test_two
self.assertEqual(True, 0, msg='isnot equal')
Ran 6 tests in 0.009s
FAILED (failures=1, skipped=1)
Process finished with exit code 1
Assertion failed
Assertion failed
Assertion failed
Assertion failed
四、执行测试脚本生成的报告: