Jmeter Runtime data validation and writing to a csv - jmeter

I am having a search API which will return bunch records(first name, last name, etc). If the DB have the records it will return the attributes with values else it will return as Null. I want to print or write the records for which value is available, Null blocks can be discarded. Could you please guide how to check and capture the same

Depending on where and in what form you want the output the approaches will differ therefore try to be more specific next time, for the time being here is a "generic" solution
Extract data from the response into a JMeter Variables using suitable JMeter Post-Processors. Basically the same process which is used in dynamic data correlation in JMeter tests. Give the variables meaningful names like firstName, lastName, etc.
Define sample_variables property in user.properties file (lives in JMeter "bin" folder) as somma-separated values like:
sample_variables=firstName,lastName,etc.
Next time you run your JMeter test in command-line non-GUI mode the resulting .jtl file will contain the respective values for all defined Sample Variables

Related

JMETER:- How to handle multiple CSV file if all files column name are same

In Jemter:- How to fetch the data from CSV file if we have multiple CSV files for all cases inside a thread(column name is same in all file only data is different), in my case , for all request data is getting from one file only (first case's CSV ) even though file name is different. and once i disable other request and run only single request it will take data from proper file.
If you have dependent CSV files, i.e. trying to use variable from 1st CSV file as an input to 2nd CSV - it will not work.
As per Execution Order chapter of JMeter User Manual:
0. Configuration elements
1. Pre-Processors
2. Timers
3. Sampler
4. Post-Processors (unless SampleResult is null)
5. Assertions (unless SampleResult is null)
6. Listeners (unless SampleResult is null)
So being Configuration Elements all the CSV Data Set Config elements are initialized at the same time at the beginning of the test.
If your test configuration is highly dynamic and built on relationship of data from multiple CSV files you will have to go for __CSVRead() function instead.
Check out How to Pick Different CSV Files at JMeter Runtime for more information on the concept and example solution.

Jmeter can get parameters?

My question is - if I run a test via Jmeter, for example , if it's a site which enables you to book a flight, and you choose your source and destination when you record it.
Is it possible to pass different values to the destination field? I mean, maybe a txt file with some destinations and pass it to the Jmeter test and then, you will have some tests which each of them is running with a different destination?
If yes, how can I do it?
It's not necessary that it will be a txt file. Just a way to pass different values to one parameter.
Important: I'm using blazemeter plugin for chrome.
Thanks a lot,
appreciated.
You can use CSV Data Set Config. It is very easy to use for parameterizing variables in the test plan.
Check this article on blazemeter to understand the CSV Data Set Config quickly.
Depending on what you're trying to achieve you can go for:
HTML Link Parser. See Poll Example which shows how you can use it for selecting random values from inputs
You can extract all the possible values from the previous response using a Post-Processor, most probably CSS Selector Extractor and configure each thread to use its own (or random) value from the input
And last, but not the least, you can use an external data source like .txt or .csv file and utilize __StringFromFile() function or CSV Data Set Config so each thread (virtual user) would read the next value from file instead of using recorded hard-coded values.

How to hit parameterized url in Apache Jmeter?

This is my test URL " http://appr.seconddemo.org/hitssurveys/survey?uid=113&offerid=311&subid=subvalues&offr_id={Email} "
I want to hit the url 1500 times per second , and want to change the "{Email}" with real value in each iteration.
How it's possible please give me a step by step guide.
Considering that you need to pass the emails from the external file, the most efficient way that we are using in software testing companies is to pass the variable from .csv or .txt files using 'CSV Data Set Config' element of the JMeter.
Please find the steps that you need to follow:
Add a 'CSV Data Set Config' element from 'Config Element' by right-clicking the thread group
Set Filename field with complete path to your .csv or .txt file that contains your emails
Set Variable field as 'Email' [This variable name should be same as you set in your url request]
Ignore first line to False
Set other fields as per your requirement
Now add HTTP Sampler in your Thread Group and set the Protocol, Server Name, Method & Path as instructed in the screenshot:
Create .csv or .txt file and add all emails separated by new line:
Hope this answer is useful.
You can use the CSV Data Set Config. Put all your email credentials in the CSV file and make sure you have put this CSV file in your JMeter /bin directory.
Add a CSV dataset config in your test plan. Your CSV dataset config should be like:
Now in your thread group, define the number of threads you want to execute and then in your sampler put the path as follows:
http://appr.seconddemo.org/hitssurveys/survey?uid=113&offerid=311&subid=subvalues&offr_id=${Email}
Depending on where do your emails live there are following options:
If they are in a text file, each email on a new line you can use __StringFromFile() function like:
If they are in a database you can use JDBC PreProcessor to fetch the data from the database table column and put your request under ForEach Controller
If you need to provide just some random characters you can use __RandomString() function.
More information: JMeter Parameterization - The Complete Guide

How to change the Results file name during runtime in JMeter?

I have a sampler inside my test plan. I also have a Simple Data Writer to save requests and responses.
I have entered "Results.xml" to filename field in Simple Data Writer. When I run the test plan, a text file gets generated in the designated path.
Is it possible to change the filename to "Threadgroupname_SamplerName_Results.xml" at runtime?
For example, I have renamed my Thread group to "Search" and the sampler to "CurrencyConverter". Is it possible to save the result in format "Search_CurrencyConverter_Results.xml" during runtime?
You can use variable placeholders and the __time function in the filename input field to have it dynamically set/changed at runtime. Something like this:
${results.dir}/myresultfile_${__time(YMDHMS)}.xml
According to the jmeter bugzilla, it is not possible to include the thread group name in the filename because "ResultCollector is initialized in StandardJMeterEngine thread before launch of any ThreadGroup so ctx.getThreadGroup() will return null."

JMeter : how to use the timestamp of the parent

I'm testing a group of urls for performance tests. We have an SLA that states that a certain group of URLS must have an average of 80% success within a certain timerange.
The logic of the sla is done in a separate application. The data is fed from JMeter output into a database.
I need a way to identify the 5 tests of these urls, so that the application knows they belong to the same test. I use a Transaction Controller to group all the URL tests, but I still don't see how I can put an identifier in the generated output file (done by View Results Tree Listener). If I could reuse the timestamp of the parent, i.e. the Transaction Controller for the individual HTTP Requests, that would make my day. I tried adding User Defined Variables under the Transaction Controller, but I don't see how I can output the value of my variable into the output file.
Is anything similar possible?
Best regards,
Wim
Store your value in jmeter context using a Beanshell sampler then in jeter.properties uncomment sample_variables ans add the name under which you stored your value:
Optional list of JMeter variable names whose values are to be saved in the result data files.
Use commas to separate the names. For example:
sample_variables=SESSION_ID,REFERENCE
Regards
Philippe M.

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