为不同的测试目标配置鼻子测试

Question

我有一套鼻子测试，我用它来测试一块硬件。例如，下面的测试关注的是系统测试报警每种模式：

import target 

modes = ("start","stop","restart","stage1","stage2") 
max_alarm_time = 10 

# generate tests for testing each mode 
def test_generator(): 
    for m in modes: 
     yield check_alarm, m, max_alarm_time 

# test alarm for a mode 
def check_alarm(m, max_alarm_time): 
    target.set_mode(m) 
    assert target.alarm() < max_alarm_time 

我的大部分测试都这个样子，我正在测试一个特定功能的系统上的所有modes。

我现在想使用同一套测试，以测试新的硬件上有两个额外的模式：

modes = ("start","stop","restart","stage1","stage2","stage3","stage4") 

当然，我希望我的测试仍然是旧的硬件也可以。在运行自动化测试时，我需要为测试环境硬编码我连接的硬件。

我认为要做到这一点的最好办法是创建一个paramaters.py模块如下：

def init(hardware): 
    global max_alarm_time 
    global modes 
    max_alarm_time = 10 
    if hardware == "old": 
     modes = ("start","stop","restart","stage1","stage2") 
    elif hardware == "new": 
     modes = ("start","stop","restart","stage1","stage2","stage3","stage4") 

与test_alarms.py现在看起来像这个：

import target 
import parameters 

# generate tests for testing each mode 
def test_generator(): 
    for m in parameters.modes: 
     yield check_alarm, m, parameters.max_alarm_time 

# test alarm for a mode 
def check_alarm(m, max_alarm_time): 
    target.set_mode(m) 
    assert target.alarm() < max_alarm_time 

然后在我主要我有以下几点：

import nose 
import parameters 

parameters.init("new") 

nose.main() 

这是您认为有效的方法吗？

Answer 1

解决类似问题的另一种方式是从以下列方式插件属性滥用@attr装饰：

from nose.plugins.attrib import attr 

max_alarm_time = 10 

# generate tests for testing each mode 
@attr(hardware='old') 
@attr(modes = ("start","stop","restart","stage1","stage2")) 
def test_generator_old(): 
    for m in test_generator_old.__dict__['modes']: 
     yield check_alarm, m, max_alarm_time 

@attr(hardware='new') 
@attr(modes = ("start","stop","restart","stage1","stage2", "stage3","stage4")) 
def test_generator_new(): 
    for m in test_generator_new.__dict__['modes']: 
     yield check_alarm, m, max_alarm_time 


# test alarm for a mode 
def check_alarm(m, max_alarm_time): 
    print "mode=", m 

您可以立即“旧”与“新”之间进行切换，就像这样：

$ nosetests modes_test.py -a hardware=new -v 
modes_test.test_generator_new('start', 10) ... ok 
modes_test.test_generator_new('stop', 10) ... ok 
modes_test.test_generator_new('restart', 10) ... ok 
modes_test.test_generator_new('stage1', 10) ... ok 
modes_test.test_generator_new('stage2', 10) ... ok 
modes_test.test_generator_new('stage3', 10) ... ok 
modes_test.test_generator_new('stage4', 10) ... ok 

---------------------------------------------------------------------- 
Ran 7 tests in 0.020s 

OK 

而且老一： $ nosetests modes_test.py -a硬件=老-v

modes_test.test_generator_old('start', 10) ... ok 
modes_test.test_generator_old('stop', 10) ... ok 
modes_test.test_generator_old('restart', 10) ... ok 
modes_test.test_generator_old('stage1', 10) ... ok 
modes_test.test_generator_old('stage2', 10) ... ok 

---------------------------------------------------------------------- 
Ran 5 tests in 0.015s 

OK 

另外，虽然我还没有玩过那么多，nose-testconfig可以帮助你做同样的伎俩。