创建和扩展Library的示例

示例：Check status on Linux OS

创建与使用library的基本步骤：

1--- library实现的内容和实现的方式

2--- library的编写：名称、类别、引用的模块、关键字、注释等

3--- library的编译调试方式、文档生成、导入及确认。。。

4--- Test Case的编写与调试

5--- 扩展已存在的测试库的方式

1--- library实现的内容和方式

实现的内容：

以SSH方式登陆Linux系统，检查CPU，Memory，Disk等使用状态是否在期望的范围内

实现的方式：

利用现有的SSHLibrary来实现SSH登陆Linux系统

创建相应关键字来实现单项的检查，包含内容获取、分析和判断

2--- library的编写

名称、类别、引用的模块、关键字、注释等

名称：LibraryCheckLinuxOS.py

类别：静态库

引用的模块：SSH Library、re

关键字：为每一个独立检查项建立静态关键字

注释：添加Library说明及关键字的使用方法

。。。。。。

# -*- coding: utf-8 -*-import refrom SSHLibrary import SSHLibraryclass LibraryCheckLinuxOS:    """This is an example for creating a library ."""        ROBOT_LIBRARY_SCOPE = 'TEST SUITE'  #测试库的范围    __version__ = '0.1'  #声明测试库的版本    def creat_ssh_connection(self,ipaddress,port,user,login):        '''        根据输入的IP、端口、用户名及密码，建立相应的SSH连接.                Example :                | creat ssh connection | 10.68.75.111 | 22 | mcadmin | testsc |        '''        self.mc = SSHLibrary()        self.mc.open_connection(ipaddress,port)        self.mc.login(user,login)            def check_disk(self,quota=80):        '''        检查磁盘的空间是否满足特定的要求。默认已使用空间要求小于80%.                Example :                | check disk | 80 |        '''        self.mc.start_command("df -h")        diskstatus = self.mc.read_command_output()        match_one = re.findall(r"\d+\%",diskstatus,re.M)        match_two = ' '.join(match_one)        matchobj = re.findall(r"\d+",match_two)        if int(max(matchobj)) < int(quota):            print "The disk status is OK !"         else:            raise UserWarning("There's something wrong with your disk.")    def check_rpm(self,rpmname):        '''        检查特定的安装包是否安装.        Example:        | check rpm | name |        '''        self.mc.start_command("rpm -qa|grep %s" % rpmname)        checkstatus = self.mc.read_command_output()        if checkstatus == rpmname:            print "The %s is installed !" % rpmname        else:            raise UserWarning("There's something wrong with your rpm.")    def check_service(self,servicename):        '''        检查特定服务的状态.        Example:        | check service | name |        '''        self.mc.start_command("service %s status" % servicename)        checkstatus = self.mc.read_command_output()        match = re.findall(r"running",checkstatus,re.M)        if len(match) > 0:            print "The service status is OK !"         else:            raise UserWarning("The service status is not running.")    def check_process(self,processname):        '''        检查特定进程的状态.        Example:        | check process | name |        '''        self.mc.start_command("ps -ef | grep %s" % processname)        checkstatus = self.mc.read_command_output()        match = re.findall(r"%s" % processname,checkstatus,re.M)        if len(match) >= 2 :            print "The process status is OK !"         else:            raise UserWarning("The %s is not running." % processname)            def check_memory(self,value=80):        '''        检查内存的使用状态.        Example:        | check memory | value |        '''        self.mc.start_command("free -m")        checkstatus = self.mc.read_command_output()        match = re.findall(r"\d+",checkstatus,re.M)        quota =(float(match[1])/float(match[0]))*100        if int(quota) <= int(value):            print "The memory is OK !"         else:            raise UserWarning("Please check the status of memory" )      ##from SSHLibrary import SSHLibrary####    def check_memory(self,ipaddress,user,login):##        mc = SSHLibrary()##        mc.open_connection(ipaddress)##        mc.login(user,login)##        mc.start_command('free -m')##        return mc.read_command_output()##class LibraryCheckLinuxOS:####    ROBOT_LIBRARY_SCOPE = 'TEST SUITE'  #测试库的范围##    __version__ = '0.1'  #声明测试库的版本####    def creat_ssh_connection(self,ipaddress,port,user,login):##        self.mc = SSHLibrary()##        self.mc.open_connection(ipaddress,port)##        self.mc.login(user,login)####    def check_loadavg(self):##        self.mc.start_command('cat /proc/loadavg')##        print self.mc.read_command_output()##        ##    def check_memory(self):##        self.mc.start_command('free -m')##        print self.mc.read_command_output()####    def check_disk(self):##        self.mc.start_command('df -h')##        print self.mc.read_command_output()## 检查Linux OS的磁盘空间##    $ df -h##    Filesystem            Size  Used Avail Use% Mounted on##    /dev/mapper/VG00-sysimg##                           19G  2.7G   16G  15% /##    /dev/sda1              99M   19M   75M  21% /boot##    tmpfs                 2.0G   20K  2.0G   1% /dev/shm##    /dev/mapper/vg01-mmsc_var##                           35G  435M   33G   2% /var/mnt/mmsc_var##    /dev/mapper/vg03-ldap##                          985M  114M  821M  13% /var/mnt/local/ldap##    /dev/mapper/vg02-clusterlvol.001##                          2.0G   37M  1.8G   2% /var/mnt/cluster_lvol## 检查Linux OS的内存状态##    $ free -m##                 total       used       free     shared    buffers     cached##    Mem:          3949       1911       2037          0        336       1245##    -/+ buffers/cache:        329       3619##    Swap:            0          0          0## 检查Linux OS是否安装了特定的程序包##    $ rpm -qa |grep SS_MMSC-5.0.6##    SS_MMSC-5.0.6-30        ## 检查Linux OS特定进程的状态##    # ps -ef |grep xkrmanmx##    mcadmin  19215 19200  1 11:16 ?        00:00:05 xkrmanmx##    root     21723 17643  0 11:24 pts/0    00:00:00 grep xkrmanmx

实现如下功能：