Python学习总结 11 使用tempest测试OpenStack

1, 什么是Tempest

tempest
├── api # API的测试集
├── cli # OpenStack的命令行工具测试集
├── common # 一些公共的工具类和函数
├── scenario # 对OpenStack的常用场景进行测试，包括基本的启动VM，挂载volumn和网络配置等
├── services # tempest自己实现的OpenStack API Client，自己实现是为了不让一些bug隐藏在官方实现的Client里面。
├── stress # 压力测试集，利用multiprocessing来启动多个进程来同时对OpenStack发起请求。
├── thirdparty # EC2兼容的API测试集
├── whitebox # 白盒测试集，主要是对DB操作，然后发起请求，然后比对结果
2、tempest是通过nose驱动的，python语言编写，使用testtools和testresources等几个测试工具库
3、tempest.test.BaseTestCase,BaseTestCase声明config属性,读取配置文件
4、tempest.test.TestCase声明很多工具函数，供调用
5、每个测试可以分别测试JSON格式和XML格式

安装与使用参考文档  http://docs.OpenStack.org/developer/tempest/overview.html

下载tempest

# git clone https://github.com/openstack/tempest.git  
# cd tempest   
# python setup.py install  
# pip install -r requirements.txt  

生成配置文件

# pip install tox  
# sudo apt-get install curl
# tox -egenconfig    
# cp etc/{tempest.conf.sample,tempest.conf} 

编辑tempest.conf 文件
参考文档  http://docs.openstack.org/developer/tempest/configuration.html#tempest-configuration

[root@localhost tempest]# grep ^[^#] etc/tempest.conf  
[DEFAULT]  
[alarming]  
[auth]  
use_dynamic_credentials = true  
tempest_roles = admin  
admin_username = admin  
admin_project_name = admin  
admin_password = admin  
admin_domain_name = default  
[baremetal]  
[compute]  
image_ref = CentOS-7-x86_64  
flavor_ref = 1  
flavor_ref_alt = 2  
[compute-feature-enabled]  
[dashboard]  
dashboard_url = http://192.168.132.250/  
login_url = http://192.168.132.250/auth/login/  
[data-processing]  
catalog_type = identity  
[data-processing-feature-enabled]  
[database]  
[debug]  
[identity]  
uri = http://192.168.132.250:5000/v3  
uri_v3 = http://192.168.132.250:5000/v3  
auth_version = v3  
username = admin  
project_name = admin  
in_role = admin  
password = admin  
domain_name = default  
default_domain_id = default  
[identity-feature-enabled]  
api_v3 = true  
[image]  
[image-feature-enabled]  
[input-scenario]  
[negative]  
[network]  
[network-feature-enabled]  
[object-storage]  
[object-storage-feature-enabled]  
[orchestration]  
[oslo_concurrency]  
[scenario]  
[service_available]  
[stress]  
[telemetry]  
[telemetry-feature-enabled]  
[validation]  
[volume]  
[volume-feature-enabled]  

2, 安装 tempest

$ git clone https://github.com/openstack/tempest/ # 下载源码$ pip install tempest # 安装tempest项目
如果pip install 报错，比如某个Python包版本冲突或者之类的，可以先执行下$ pip install -r tempest/requirements.txt # 安装Python依赖包
然后再执行$ pip install tempest

　　 还需要安装一下模块。

pip install nose 

pip install oslo.log

pip install testrepository

pip install paramiko

　　安装urllib3

wget https://pypi.python.org/packages/3b/f0/e763169124e3f5db0926bc3dbfcd580a105f9ca44cf5d8e6c7a803c9f6b5/urllib3-1.16.tar.gz#md5=fcaab1c5385c57deeb7053d3d7d81d59
tar xvf urllib3-1.16.tar.gz  && cd urllib3-1.16/
python setup.py install

3， 初始化 Tempest

http://www.tuicool.com/articles/VzmInaR

4，Tempest Coding Guide

https://docs.openstack.org/developer/tempest/HACKING.html

5， 执行部分测试用例

testr run tempest.api.compute.admin.test_delete_server.py

6，运行测试
执行所有测试

nosetests tempest

执行某一个包下的测试

nosetests tempest/tests/identity

执行一个测试代码

nosetests tempest/api/identity/v3/test_projects.py