【测试技术-性能测试-实战1】使用Loadrunner自带的系统学习脚本编写和脚本增强。
1、启动Web Tours Server
- Hp software->start hp web tours server
- Hp software->hp web tours application
2、脚本录制
2.1、录制前设置
-
打开Virtual User Generator
-
创建脚本，协议选择Web - HTTP/HTML，输入脚本名，选择好脚本存放路径，点击create即可创建好一个空白脚本。
-
设置录制选项，点击record按钮，设置完基本信息后，点击右下角的Recording Options，设置录制选项：
- HTTP/HTML Level设置：使用基于HTML-based script录制的脚本更简洁欸，使用基于URL-based script录制的脚本，会将每个html元素都使用web_url函数加载，脚本冗长，不易关联。实际使用时基于浏览器的的应用程序（未使用HTTP安全协议）推荐选择HTML-based script；非浏览器/使用了HTTPS安全协议，推荐使用URL-based script。
- 编码设置（防止录制出现中文乱码）：HTTP Properties -> Advanced，勾选上Support charset（UTF-8）
- 其他使用默认选项即可
-
开始录制：录制选项设置完成后，点击Start Recording即可开始录制。
2.2、开始录制
录制完整的登录->查询航班->选择航班->支付->查看结果->退出登录流程
2.2.1、登录
登录之前先插入一个登录事务：tran01_login，然后输入用户/密码（jojo/bean），点击登录：
登录完成后，结束登录事务：
2.2.2、查找航班
先点击页面上的Flights，进入查找航班界面，然后插入事务：tran02_findFlight，输入航班信息后，点击continue按钮进入下一步
点击按钮后，结束tran02_findFlight事务。
2.2.3、选择航班
插入事务：trans03_selectFlight，选择航班，然后点击continue，进入下一步
结束trans03_selectFlight事务
2.2.4、支付
插入事务：trans04_payment，输入支付信息后，然后点击continue，进入下一步
结束trans04_payment事务
2.2.5、查看结果
插入事务：trans05_itinerary，点击Itinerary，查看预定结果
结束trans05_itinerary事务
2.2.6、退出登录
插入事务：trans06_signOff，点击sign Off按钮退出登录：
结束trans06_signOff事务。
至此，整个预定流程完成，点击结束录制按钮，完成录制，生成录制脚本。
完整的录制脚本如下：
Action()
{
//打开WebTours主页
web_url("index.htm",
"URL=http://127.0.0.1:1080/WebTours/index.htm",
"Resource=0",
"RecContentType=text/html",
"Referer=",
"Snapshot=t1.inf",
"Mode=HTML",
LAST);
lr_think_time(13);
//登录
lr_start_transaction("tran01_login");
web_submit_data("login.pl",
"Action=http://127.0.0.1:1080/cgi-bin/login.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/nav.pl?in=home",
"Snapshot=t4.inf",
"Mode=HTML",
ITEMDATA,
"Name=userSession", "Value=133951.489509923ziQAVcQpHtVzzzzHtVDtApHHitf", ENDITEM,
"Name=username", "Value=jojo", ENDITEM,
"Name=password", "Value=bean", ENDITEM,
"Name=JSFormSubmit", "Value=on", ENDITEM,
"Name=login.x", "Value=51", ENDITEM,
"Name=login.y", "Value=10", ENDITEM,
LAST);
lr_end_transaction("tran01_login",LR_AUTO);
lr_think_time(13);
//查询航班
lr_start_transaction("tran02_findFlight");
web_submit_data("reservations.pl",
"Action=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/reservations.pl?page=welcome",
"Snapshot=t9.inf",
"Mode=HTML",
ITEMDATA,
"Name=advanceDiscount", "Value=0", ENDITEM,
"Name=depart", "Value=Denver", ENDITEM,
"Name=departDate", "Value=05/28/2022", ENDITEM,
"Name=arrive", "Value=Frankfurt", ENDITEM,
"Name=returnDate", "Value=05/29/2022", ENDITEM,
"Name=numPassengers", "Value=1", ENDITEM,
"Name=seatPref", "Value=Window", ENDITEM,
"Name=seatType", "Value=First", ENDITEM,
"Name=.cgifields", "Value=roundtrip", ENDITEM,
"Name=.cgifields", "Value=seatType", ENDITEM,
"Name=.cgifields", "Value=seatPref", ENDITEM,
"Name=findFlights.x", "Value=65", ENDITEM,
"Name=findFlights.y", "Value=5", ENDITEM,
LAST);
lr_end_transaction("tran02_findFlight",LR_AUTO);
lr_think_time(21);
//选择航班
lr_start_transaction("trans03_selectFlight");
web_submit_data("reservations.pl_2",
"Action=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Snapshot=t10.inf",
"Mode=HTML",
ITEMDATA,
"Name=outboundFlight", "Value=013;592;05/28/2022", ENDITEM,
"Name=numPassengers", "Value=1", ENDITEM,
"Name=advanceDiscount", "Value=0", ENDITEM,
"Name=seatType", "Value=First", ENDITEM,
"Name=seatPref", "Value=Window", ENDITEM,
"Name=reserveFlights.x", "Value=52", ENDITEM,
"Name=reserveFlights.y", "Value=9", ENDITEM,
LAST);
lr_end_transaction("trans03_selectFlight",LR_AUTO);
lr_think_time(26);
//支付
lr_start_transaction("trans04_payment");
web_submit_data("reservations.pl_3",
"Action=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Snapshot=t11.inf",
"Mode=HTML",
ITEMDATA,
"Name=firstName", "Value=Jojo", ENDITEM,
"Name=lastName", "Value=Bean", ENDITEM,
"Name=address1", "Value=123", ENDITEM,
"Name=address2", "Value=456", ENDITEM,
"Name=pass1", "Value=Jojo Bean", ENDITEM,
"Name=creditCard", "Value=123456", ENDITEM,
"Name=expDate", "Value=1122", ENDITEM,
"Name=saveCC", "Value=on", ENDITEM,
"Name=oldCCOption", "Value=on", ENDITEM,
"Name=numPassengers", "Value=1", ENDITEM,
"Name=seatType", "Value=First", ENDITEM,
"Name=seatPref", "Value=Window", ENDITEM,
"Name=outboundFlight", "Value=013;592;05/28/2022", ENDITEM,
"Name=advanceDiscount", "Value=0", ENDITEM,
"Name=returnFlight", "Value=", ENDITEM,
"Name=JSFormSubmit", "Value=off", ENDITEM,
"Name=.cgifields", "Value=saveCC", ENDITEM,
"Name=buyFlights.x", "Value=42", ENDITEM,
"Name=buyFlights.y", "Value=10", ENDITEM,
LAST);
lr_end_transaction("trans04_payment",LR_AUTO);
lr_think_time(16);
//查询预定结果
lr_start_transaction("trans05_itinerary");
web_url("welcome.pl",
"URL=http://127.0.0.1:1080/cgi-bin/welcome.pl?page=itinerary",
"Resource=0",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/nav.pl?page=menu&in=flights",
"Snapshot=t12.inf",
"Mode=HTML",
LAST);
lr_end_transaction("trans05_itinerary",LR_AUTO);
lr_think_time(19);
//退出登录
lr_start_transaction("trans06_signOff");
web_url("welcome.pl_3",
"URL=http://127.0.0.1:1080/cgi-bin/welcome.pl?signOff=1",
"Resource=0",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/nav.pl?page=menu&in=itinerary",
"Snapshot=t13.inf",
"Mode=HTML",
LAST);
lr_end_transaction("trans06_signOff",LR_AUTO);
return 0;
}
3、脚本回放
点击Replay，回放脚本：
脚本回放成功。
4、脚本增强
4.1、参数关联
作用：将服务器返回给客户端的动态值进行关联。
回放成功后，可以登录WebTours查看预定的记录是否增加了一条，如果增加了，说明脚本没问题，可以成功预定。然而登录后，发现预定的数量并没有增加。所以，需要重新检查脚本。
首先是检查登录是否成功。可以看到登录的web_submit_data方法中，提交的参数有userSession，userSession为动态为动态生成，userSession在第一次请求服务器的时候有服务器返回，所以需要对该参数做参数关联。
要获取userSession有两个方法：
- 在浏览器中请求页面，F12工具查看返回，在响应报文中查找userSession：
可以看到nav.pl?in=home请求中，返回报文中包含userSession：
<input type="hidden" name="userSession" value="133944.089590928ziiQHtQpVAiDDDDDtVDDiptQtzf"/>
- 在Loadrunner中，请求的上一步操作的任一地方，点击右键->Show snapshot，然后在Snapshot中使用Ctrl+F查找该值，同样可以找到：
找到userSession后，即可开始编写关联函数，关联函数为web_reg_save_param()，具体如下：
//设置userSession参数关联
web_reg_save_param("userSession", //参数名
"LB=name=\"userSession\" value=\"", //左边界：参数值的左边字符，如果带有双引号，需要用\进行转义
"RB=\"/>", //右边界：参数值的右边字符，根据左右边界可以唯一确定参数值
LAST);
注意关联需要写到操作函数的上面，关联函数编写完成后，需要替换脚本中的参数值，将登录时的提交参数替换如下：
web_submit_data("login.pl",
"Action=http://127.0.0.1:1080/cgi-bin/login.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/nav.pl?in=home",
"Snapshot=t42.inf",
"Mode=HTML",
ITEMDATA,
"Name=userSession", "Value={userSession}", ENDITEM, //参数关联，参数名需要用{}括起来
"Name=username", "Value=jojo", ENDITEM,
"Name=password", "Value=bean", ENDITEM,
"Name=JSFormSubmit", "Value=on", ENDITEM,
"Name=login.x", "Value=42", ENDITEM,
"Name=login.y", "Value=12", ENDITEM,
LAST);
关联完成后，重新回放，然后登录网站检查，可以看到Itinerary中订单多了一个记录，每回放一次都会多一条，说明关联成功，脚本可以正常完成登录了。
4.2、参数化
在该脚本中，所有参数均是固定的，比如订票操作，每次都是订的Denver->Frankfurt，如果想要每次预定都使用不同的出发/到达城市对，则需要进行对响应的数据进行参数化，具体操作参考：https://blog.csdn.net/weixin_42115131/article/details/124965795
设置好的脚本如下：
web_submit_data("reservations.pl",
"Action=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/reservations.pl?page=welcome",
"Snapshot=t47.inf",
"Mode=HTML",
ITEMDATA,
"Name=advanceDiscount", "Value=0", ENDITEM,
"Name=depart", "Value={depart}", ENDITEM, //出发城市参数化
"Name=departDate", "Value=05/27/2022", ENDITEM,
"Name=arrive", "Value={arrive}", ENDITEM, //到达城市参数化
"Name=returnDate", "Value=05/28/2022", ENDITEM,
"Name=numPassengers", "Value=1", ENDITEM,
"Name=seatPref", "Value=Window", ENDITEM,
"Name=seatType", "Value=Business", ENDITEM,
"Name=.cgifields", "Value=roundtrip", ENDITEM,
"Name=.cgifields", "Value=seatType", ENDITEM,
"Name=.cgifields", "Value=seatPref", ENDITEM,
"Name=findFlights.x", "Value=63", ENDITEM,
"Name=findFlights.y", "Value=8", ENDITEM,
LAST);
参数值在Parameters中可以进行设置。
参数设置时，Select next row框选取Unique和Sequential有如下区别，以10个虚拟用户迭代10次为例：
当选择Sequential时，可以看到，同一个每个虚拟用户取值相同，下一次迭代取第二个参数，第6次迭代参数已取完，重新循环取第一个值：
当选择Unique时，表示每个虚拟用户取唯一的一个值，每次迭代每个虚拟用户都会取不同参数值，由于只设置了5个虚拟用户，所以后5个虚拟用户未取到值：
替换参数后，重新运行脚本，在runtime setting中将迭代设置为5次，完成后登录网站查看是否生成了5个不同城市对的订单
可以看出，生成的5个记录全是Denver/Frankfurt。参数化并未生效。
再次检查脚本，发现查询航班完成后的选择航班提交的数据，outboundFlight为013;592;05/28/2022，即不论查询结果是什么，每次选择的航班都是013号，592$，该值为查询航班时由服务器返回的值，所以，还需要对该值做参数关联，关联方法同userSession：
web_reg_save_param("outboundFlight",
"LB=name=\"outboundFlight\" value=\"",
"RB=\">",
"Ord=2", //相同的左右边界共有4个，取第二个
LAST);
关联之后，把后面脚本中出现该参数的地方都用关联的参数替换掉，然后重新执行脚本，检查结果：
可以看到，成功预定了5张不同出发到达城市对的票。
4.3、检查点设置
订票成功后，页面上会返回字符串”Thank you for booking through Web Tours.“，这儿介绍两种设置检查点的方法：
4.3.1、web_reg_find()函数
参考：https://blog.csdn.net/weixin_42115131/article/details/124965795
4.3.2、保存&对比
原理和参数关联一致，先将服务器返回的参数保存下来：
<small><B>Thank you for booking through Web Tours.B>small>
web_reg_save_param("response",
"LB=",
"RB=",
LAST);
在payment之后，对服务器返回值和预期值做对比：
//检查支付是否成功
if(strstr(lr_eval_string("{payment_result}"), "Thank you for booking through Web Tours.")!=NULL){
//strstr(str1, str2)为c语言函数，如果str2为str1子串，则返回字串出现的位置；不是则返回NULL
//lr_eval_string()函数作用为返回脚本中的一个参数当前的值，格式为：lr_eval_string("{参数名}");
lr_end_transaction("trans04_payment",LR_PASS);
//事务有3种结束状态，LR_AUTO为自动结束，不判断成功失败；LR_FAIL为以失败的状态结束；LR_PASS为以成功的状态结束
lr_output_message("Success! depart is %s, arrive is %s.", lr_eval_string("{depart}"), lr_eval_string("{arrive}"));
//lr_output_message为打印函数
}else{
lr_end_transaction("trans04_payment",LR_PASS);
lr_output_message("FAIL!!!!!!");
}
加入检查点后，重新运行，结果如下：
Action.c(149): Success! depart is Portland, arrive is Denver.
Action.c(149): Success! depart is San Francisco, arrive is Frankfurt.
Action.c(149): Success! depart is Seattle, arrive is London.
Action.c(149): Success! depart is Sydney, arrive is Los Angeles.
Action.c(149): Success! depart is Zurich, arrive is Paris.
至此，脚本调试完成，可以将脚本加载到controller中设置场景执行。完整脚本如下：
Action()
{
//设置userSession参数关联
web_reg_save_param("userSession", //参数名
"LB=name=\"userSession\" value=\"", //左边界：参数值的左边字符，如果带有双引号，需要用\进行转义
"RB=\"/>", //右边界：参数值的右边字符，根据左右边界可以唯一确定参数值
LAST);
//打开WebTours主页
web_url("index.htm",
"URL=http://127.0.0.1:1080/WebTours/index.htm",
"Resource=0",
"RecContentType=text/html",
"Referer=",
"Snapshot=t1.inf",
"Mode=HTML",
LAST);
lr_think_time(13);
//登录
lr_start_transaction("tran01_login");
web_submit_data("login.pl",
"Action=http://127.0.0.1:1080/cgi-bin/login.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/nav.pl?in=home",
"Snapshot=t4.inf",
"Mode=HTML",
ITEMDATA,
"Name=userSession", "Value={userSession}", ENDITEM,
"Name=username", "Value=jojo", ENDITEM,
"Name=password", "Value=bean", ENDITEM,
"Name=JSFormSubmit", "Value=on", ENDITEM,
"Name=login.x", "Value=51", ENDITEM,
"Name=login.y", "Value=10", ENDITEM,
LAST);
lr_end_transaction("tran01_login",LR_AUTO);
lr_think_time(13);
//查询航班
lr_start_transaction("tran02_findFlight");
//设置outboundFlight关联函数
web_reg_save_param("outboundFlight",
"LB=name=\"outboundFlight\" value=\"",
"RB=\">",
"Ord=2", //相同的左右边界共有4个，取第二个
LAST);
web_submit_data("reservations.pl",
"Action=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/reservations.pl?page=welcome",
"Snapshot=t9.inf",
"Mode=HTML",
ITEMDATA,
"Name=advanceDiscount", "Value=0", ENDITEM,
"Name=depart", "Value={depart}", ENDITEM,
"Name=departDate", "Value=05/28/2022", ENDITEM,
"Name=arrive", "Value={arrive}", ENDITEM,
"Name=returnDate", "Value=05/29/2022", ENDITEM,
"Name=numPassengers", "Value=1", ENDITEM,
"Name=seatPref", "Value=Window", ENDITEM,
"Name=seatType", "Value=First", ENDITEM,
"Name=.cgifields", "Value=roundtrip", ENDITEM,
"Name=.cgifields", "Value=seatType", ENDITEM,
"Name=.cgifields", "Value=seatPref", ENDITEM,
"Name=findFlights.x", "Value=65", ENDITEM,
"Name=findFlights.y", "Value=5", ENDITEM,
LAST);
lr_end_transaction("tran02_findFlight",LR_AUTO);
lr_think_time(21);
//选择航班
lr_start_transaction("trans03_selectFlight");
web_submit_data("reservations.pl_2",
"Action=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Snapshot=t10.inf",
"Mode=HTML",
ITEMDATA,
"Name=outboundFlight", "Value={outboundFlight}", ENDITEM,
"Name=numPassengers", "Value=1", ENDITEM,
"Name=advanceDiscount", "Value=0", ENDITEM,
"Name=seatType", "Value=First", ENDITEM,
"Name=seatPref", "Value=Window", ENDITEM,
"Name=reserveFlights.x", "Value=52", ENDITEM,
"Name=reserveFlights.y", "Value=9", ENDITEM,
LAST);
lr_end_transaction("trans03_selectFlight",LR_AUTO);
lr_think_time(26);
//支付
lr_start_transaction("trans04_payment");
//保存返回的参数，做事务状态检查
web_reg_save_param("payment_result",
"LB=",
"RB=",
LAST);
web_submit_data("reservations.pl_3",
"Action=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Method=POST",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/reservations.pl",
"Snapshot=t11.inf",
"Mode=HTML",
ITEMDATA,
"Name=firstName", "Value=Jojo", ENDITEM,
"Name=lastName", "Value=Bean", ENDITEM,
"Name=address1", "Value=123", ENDITEM,
"Name=address2", "Value=456", ENDITEM,
"Name=pass1", "Value=Jojo Bean", ENDITEM,
"Name=creditCard", "Value=123456", ENDITEM,
"Name=expDate", "Value=1122", ENDITEM,
"Name=saveCC", "Value=on", ENDITEM,
"Name=oldCCOption", "Value=on", ENDITEM,
"Name=numPassengers", "Value=1", ENDITEM,
"Name=seatType", "Value=First", ENDITEM,
"Name=seatPref", "Value=Window", ENDITEM,
"Name=outboundFlight", "Value={outboundFlight}", ENDITEM,
"Name=advanceDiscount", "Value=0", ENDITEM,
"Name=returnFlight", "Value=", ENDITEM,
"Name=JSFormSubmit", "Value=off", ENDITEM,
"Name=.cgifields", "Value=saveCC", ENDITEM,
"Name=buyFlights.x", "Value=42", ENDITEM,
"Name=buyFlights.y", "Value=10", ENDITEM,
LAST);
//检查支付是否成功
if(strstr(lr_eval_string("{payment_result}"), "Thank you for booking through Web Tours.")!=NULL){
//strstr(str1, str2)为c语言函数，如果str2为str1子串，则返回字串出现的位置；不是则返回NULL
//lr_eval_string()函数作用为返回脚本中的一个参数当前的值，格式为：lr_eval_string("{参数名}");
lr_end_transaction("trans04_payment",LR_PASS);
//事务有3种结束状态，LR_AUTO为自动结束，不判断成功失败；LR_FAIL为以失败的状态结束；LR_PASS为以成功的状态结束
lr_output_message("Success! depart is %s, arrive is %s.", lr_eval_string("{depart}"), lr_eval_string("{arrive}"));
//lr_output_message为打印函数
}else{
lr_end_transaction("trans04_payment",LR_PASS);
lr_output_message("FAIL!!!!!!");
}
lr_think_time(16);
//查询预定结果
lr_start_transaction("trans05_itinerary");
web_url("welcome.pl",
"URL=http://127.0.0.1:1080/cgi-bin/welcome.pl?page=itinerary",
"Resource=0",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/nav.pl?page=menu&in=flights",
"Snapshot=t12.inf",
"Mode=HTML",
LAST);
lr_end_transaction("trans05_itinerary",LR_AUTO);
lr_think_time(19);
//退出登录
lr_start_transaction("trans06_signOff");
web_url("welcome.pl_3",
"URL=http://127.0.0.1:1080/cgi-bin/welcome.pl?signOff=1",
"Resource=0",
"RecContentType=text/html",
"Referer=http://127.0.0.1:1080/cgi-bin/nav.pl?page=menu&in=itinerary",
"Snapshot=t13.inf",
"Mode=HTML",
LAST);
lr_end_transaction("trans06_signOff",LR_AUTO);
return 0;
}