关于nose的简单用法

<span style="font-size: 14px;">以下在mac系统下操作</span>
           

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1.安装nose

a.同其他第三方软件安装一样，你可以

      easy_install nose

b.或者

      pip install nose（在mac上这种安装完会出现nosetests命令无法使用，建议用a）

c.再者就是下载安装包，到setup.py的路径下执行           python setup.py install

安装完成之后就可以使用nose了，下面介绍简单的用法。 2.使用 a.建一个test_nose.py文件，运行一个简单的例子

def test_numbers_3_4():
		print 'success'
		assert 3*4 ==12
           

打开终端，进入test_nose.py所在的路径，运行nosetests   -s  test_nose.py,-s、-v分别表示是否打印内部的print输出信息 -s 返回结果：

success
.
----------------------------------------------------------------------
Ran 1 test in 0.001s

OK
           

-v返回结果：

test_nose.test_numbers_3_4 ... ok

----------------------------------------------------------------------
Ran 1 test in 0.002s

OK
           

无参数：

.
----------------------------------------------------------------------
Ran 1 test in 0.001s

OK
           

b.关于nose的setup()和teardown()函数的用法

• module
• class
• function

1）作用于function中的时候，只需要引用装饰器@with_setup即可

from nose import with_setup
def my_setup_function():
    print 'this is my_setup_function'
def my_teardown_function():
    print 'this is my_teardown_function'

@with_setup(my_setup_function,my_teardown_function)
def test_numbers_3_4():
	print 'success'
	assert 3*4 ==12
           

返回结果：

this is my_setup_function
success
this is my_teardown_function
.
----------------------------------------------------------------------
Ran 1 test in 0.001s

OK
           

如果不喜欢使用装饰器，也可以直接赋属性值：

test_numbers_3_4.setup = my_setup_function
test_numbers_3_4.teardown = my_teardown_function
           

2）作用于class中的，不带@classmethod的运行于每一个test的前后，带有@classmethod的运行与开始于与结束

class TestUM:
 
    def setup(self):
        print ("TestUM:setup() before each test method")
 
    def teardown(self):
        print ("TestUM:teardown() after each test method")
 
    @classmethod
    def setup_class(cls):
        print ("setup_class() before any methods in this class")
 
    @classmethod
    def teardown_class(cls):
        print ("teardown_class() after any methods in this class")
 
    def test_numbers_5_6(self):
        print 'test_numbers_5_6()  <============================ actual test code'
        assert 5*6 == 30
 
    def test_strings_b_2(self):
        print 'test_strings_b_2()  <============================ actual test code'
        assert 'b'*2 == 'bb'
           

返回值：

setup_class() before any methods in this class
TestUM:setup() before each test method
test_numbers_5_6()  <============================ actual test code
TestUM:teardown() after each test method
.TestUM:setup() before each test method
test_strings_b_2()  <============================ actual test code
TestUM:teardown() after each test method
.teardown_class() after any methods in this class

----------------------------------------------------------------------
Ran 2 tests in 0.002s

OK
           

3）作用于module的，运行与模块的开始于结束：

from nose import with_setup
def my_setup_function():
    print 'this is my_setup_function'
def my_teardown_function():
    print 'this is my_teardown_function'
#module
def setup_module(module):
    print ("") # this is to get a newline after the dots
    print ("setup_module before anything in this file")
def teardown_module(module):
    print ("teardown_module after everything in this file")
#function
@with_setup(my_setup_function,my_teardown_function)
def test_numbers_3_4():
	print 'success'
	assert 3*4 ==12

@with_setup(my_setup_function,my_teardown_function)
def test_numbers_2_3():
	print 'fail'
	assert 2+3 == 5

# test_numbers_3_4.setup = my_setup_function
# test_numbers_3_4.teardown = my_teardown_function

#class
class TestUM:
 
    def setup(self):
        print ("TestUM:setup() before each test method")
 
    def teardown(self):
        print ("TestUM:teardown() after each test method")
 
    @classmethod
    def setup_class(cls):
        print ("setup_class() before any methods in this class")
 
    @classmethod
    def teardown_class(cls):
        print ("teardown_class() after any methods in this class")
 
    def test_numbers_5_6(self):
        print 'test_numbers_5_6()  <============================ actual test code'
        assert 5*6 == 30
 
    def test_strings_b_2(self):
        print 'test_strings_b_2()  <============================ actual test code'
        assert 'b'*2 == 'bb'


           

返回结果：

setup_module before anything in this file
setup_class() before any methods in this class
TestUM:setup() before each test method
test_numbers_5_6()  <============================ actual test code
TestUM:teardown() after each test method
.TestUM:setup() before each test method
test_strings_b_2()  <============================ actual test code
TestUM:teardown() after each test method
.teardown_class() after any methods in this class
this is my_setup_function
success
this is my_teardown_function
.this is my_setup_function
fail
this is my_teardown_function
.teardown_module after everything in this file

----------------------------------------------------------------------
Ran 4 tests in 0.001s

OK
           

3.nose 可以直接运行unittest的测试用例 直接运行 ：nosetests  test_unittest.py就可以运行

暂时就这么多吧，仅供参考，不喜勿喷！！