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How to write a JMeter script common to the test team

2022-07-28 08:31:00 【Li ziti】

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Peacetime learning 、 In the course of work , Some written jmeter Script , I believe most of them have encountered this problem . That's it ： If you change a computer to run , The file path is different , It will cause the operation to fail .

Not long ago , I've really met once ,A Students wrote a script for pressure testing , Need the help of other test students , As a result, some people did not debug the code in advance , Causes an error to be reported during operation .

The main reason is ,A The script written by students cannot be used in general , Written in your own native path , Other students' file paths are different , Result in an error .

I really can't watch it anymore , Change the script , The pressure test was successfully completed .

So is there a solution to this problem , Of course there are , And it's very simple .

Let's look at the details

Get file directory

User defined variables

Let's look at the first way , Use it directly beanshell function , Put variables into user-defined variables , As shown below ; After the script runs , You can view the script path obtained in the log .

The code is as follows ：

${\_\_BeanShell(import org.apache.jmeter.services.FileServer;FileServer.getFileServer().getBaseDir();,)}

Add this line of code , Follow up directly with shellPath Field to replace the fixed file path Just ok 了

beanshell processor

Add... To the thread group beanshell Post Processors , The configuration is as follows ：

The code is as follows ：

import org.apache.jmeter.services.FileServer;

String path = FileServer.getFileServer().getBaseDir();

log.info(path);

HTTP Default request header

Usually in a script , More than one interface request . We have to have host、protocol, If these general parameters are written in every request , Change once , Then this change is too big .

For this question , We can use HTTP Default request header , take host、protocol Good configuration , You will not fill in the following request host、protocol.

If the parameters are changed , It only needs to be changed once , Greatly improved efficiency . The configuration is as follows ：

Functional applications

For the cases mentioned at the beginning , The problem is a little , Let's answer them one by one

CSV A parameterized

Scripts are packaged and delivered in a folder , A parameterization file is referenced in the script . The path of the file is A The fixed path of students , But other students got the script , The storage path is not consistent , Then run directly , There is bound to be an error .

For this point , Let's transform it as follows , The script path uses variables shellPath Replace it , As shown below ：

Attachment upload

There is also an attachment upload request in the script , The file path is also fixed , Empathy , Use the variables we define shellPath Replace it , As shown below ：

Delete data

The script is running , Some field data will be saved , But in order not to affect the new round of testing , So before the test , Will delete historical data .

alike , The file path we want to delete is also replaced with a variable shellPath, As shown below ：

These are just jmeter Simple functions in use , Simple though , But the effect is great .

If the script is not general , Even if it works normally on your computer , Change the equipment , You have to debug again , It's not the effect we want .

When writing scripts , You still need to write general scripts , Some small details , You can't ignore .