I am trying to pass different CSV Value in sequential manner for every occurrence in Jmeter.
I applied
Loop count
Counter
Beanshell Sampler
Value from CSV
JMS Point to Point Request
With this i am able to pass different value for every occurrence for multiple users.
But my script fails when i run for multi user multiple iterations.
It is not picking up sequential value.
My beanshell sampler code-
String variablename=vars.get("variable");
String csvvalue=vars.get("valuefromcsv");
vars.put(variablename,csvvalue);
It doesn't seem to me that you need to use scripting at all, it's quite sufficient to set up CSV Data Set Config and:
Point it to CSV file
Set up "Sharing Mode" to be All Threads
This way each thread (virtual user) will be picking up the next value from the CSV file on each iteration.
Also be aware that starting from JMeter 3.1 it's recommended to use JSR223 Test Elements and Groovy language for scripting
You don't need to write the script for this. you can "Config Element-> CSV data set config" for the HTTP request. under CSV data set config page set the below values.
Variable names: give column names.
Delimiter : should be ,
Recycle of EOF: True
stop thread on EOF : false
Sharing mode : All threads.
Related
I'm new to JMeter and trying my best learn various things in JMeter especially regarding the CSV data processing as the application which I am working needs loads of parameterized data and I just can't create 100's of CSV filed as per the requirement and instead use a single CSV and filter the values based on specific conditions.
However, I'm finding it very difficult to write the code for this particular operatoin.
Name|Identity|Date
"001, A"|"3409ADD9"|05-01-2020
"002, B"|"BA47D76A"|05-01-2020
"003, C"|"2BC92A2D"|05-02-2020
"004, D"|"AB9AEEBE"|05-23-2020
"005, E"|"09FF417D"|05-29-2020
Note: Here I'm using | to parse as my data will contain as part of the Name as shown.
As you can see, The data is grouped by Date value. I want to use this CSV file to pass the Identity and Name value based on currentDate.
For Ex, Current Date is May-01-2020, I want to pass only those records whose date is May-01-2020 and pass it as a variable to my samplers in a loop. Once we reach the end of the file (I mean values which don't have date May-01-2020 associated with, I want to start the loop again ) and repeat from first till the time I mention in the RunTime Controller.
I went through different questions and trying to find a solution as I couldn't write one for myself in Groovy, Hence asking for help.
As per many suggestions in different questions regarding the use of JSR223 preprocessor with Groovy instead of a bean shell, I would like to seek some guidance to solve this problem to move further.
Add setUp Thread Group to your Test Plan
Add JSR223 Sampler to the setUp Thread Group
Put the following code into "Script" area:
SampleResult.setIgnore()
def original = new File('/path/to/original.csv').readLines()
def current = original.findAll() { line -> line.contains(new Date().format('MM-dd-yyyy')) }
def newFile = new File('/path/to/new.csv')
newFile.withWriter { out ->
out.println(original.get(0))
current.each { line ->
out.println(line)
}
}
the above code will filter the original CSV file and write only those lines which contain the current date to the new CSV file
Configure CSV Data Set Config in the main Thread Group to use the "new.csv" file from step 3
I have a scenario to use data from each row for validation using a HTTP Request. have tried with the CSV config but it reads the first row only for the iteration.
I have a single iteration and all my samplers are in a single thread group. The data from csv file is retrieved sequentially only when i give the iterations to a value say 3 (each iteration each row is taken)
How to achieve on reading the csv file rows sequentially for single iteration ,where the thread group contains many HTTP request and i need the value from each row for each requests.
Kindly suggest me a solution
As per CSV Data Set Config documentation:
By default, the file is only opened once, and each thread will use a different line from the file. However the order in which lines are passed to threads depends on the order in which they execute, which may vary between iterations. Lines are read at the start of each test iteration. The file name and mode are resolved in the first iteration.
So implementing your scenario using CSV Data Set Config doesn't seem to be possible, I would recommend considering using JMeter functions instead such as:
__StringFromFile()
__CSVRead()
These functions read next line from the file each time they're called so you can use them instead of CSV Data Set config in each of the HTTP Request samplers. Check out Apache JMeter Functions - An Introduction to get familiarized with JMeter Functions concept.
Using Jmeter, I need to add UUID extracted from JSON and add that in CSV in same column (multiple) to feed in Delete Request (REST). This is to test multiple delete calls which has unique UUID generated from POST call. Or is there any other way I can test multiple delete call after extracting from POST calls. Lets say 50 Post then 50 Delete calls.
I don't think you need to do anything as given threads reside in the same Thread Group you should be able to use the same variable for the Delete request.
JMeter Variables are local to a thread so different threads will have different variable values.
If you are still looking for a file-based solution be aware of fact that you can write an arbitrary JMeter Variable into a file using Groovy code like:
Add JSR223 PostProcessor after the JSON Extractor
Make sure you have groovy selected in the "Language" dropdown
Make sure you have Cache compiled script if available box ticked
Put the following code into "Script" area
def csvFile = new File('test.csv')
csvFile << vars.get('your_variable')
csvFile << System.getProperty('line.separator')
This way you will get any extracted UUID written into test.csv file in JMeter's "bin" folder, you can use it in the CSV Data Set Config for your Delete request.
More information:
Groovy Goodness: Working with Files
Apache Groovy - Why and How You Should Use It
I have a single CSV file with following sample data..
Column headers:
USER_VAR,PASSWORD_VAR,APP1,APP2,APP3
Actual data:
username1,password1,true,blank,blank
username2,password2,true,blank,blank
username3,password3,blank,true,blank
username4,password4,blank,true,blank
username5,password5,blank,blank,true
I have 3 different (independent) JMeter Scripts.
JMeterScript-APP1
JMeterScript-APP2
JMeterScript-APP3
I want to use the same CSV file with all these 3 scripts in such a way that each script only use the specific rows in given CSV.
JMeterScript-APP1 should only process first 2 rows (APP1=true).
JMeterScript-APP2 should only process 3rd and 4th row (APP2=true).
JMeterScript-APP3 should only process 5th row (APP3=true).
I have tried implementing this scenario using CSV dataset config. But it seems that JMeter does not provide any built in support for implementing this. Can anyone share workarounds for doing it?
If required I can also manipulate the data in last 3 columns of CSV before feeding it to JMeter scripts.
I believe the easiest way is using If Controller where you can check if this or that variable is set like:
${__javaScript(vars.get("APP1") != null,)}
So if ${APP1} variable is not defined underlying samplers will not be executed, this way you will be able to "skip" the unwanted samplers.
vars is a shorthand to JMeterVariables class instance, it provides read/write access to all JMeter Variables in scope.
I need to test the same set of urls against 5 to 10 servers. URLs are defined in the CSV file. Server names are defined in User Defined Variables config.
I'm using While Controller based on the number of servers to iterate and execute the url requests. My current logic is defined as below:
Thread group
While controller
Counter (defines number of servers)
While controller (inner check "${URL}" != "<EOF>")
CSV Data Set Config (stop EOF is true)
HTTP Sampler (with url data)
As per the logic my script will run and read the CSV file once and stop. It's not reading the outer loop. Only inner loop and stopped.
Quote from JMeter Manual of CSV Data Set:
By default, the file is only opened once, and each thread will use a
different line from the file. However the order in which lines are
passed to threads depends on the order in which they execute, which
may vary between iterations. Lines are read at the start of each test
iteration. The file name and mode are resolved in the first iteration.
Thread groups cannot be nested. So you have to use the threadgroup to iterate in CSV and foreach to iterate in something else. The second option is to generate a CSV with the URL+Server variations, and using simply a single threadgroup to read the CSV.
First option is here.
Iterating URLs outer loop, iterating servers inner loop. You just need a threadgroup and a foreach inside it. See the pictures:
Sample results:
And of course 3 more results...
You can also play with CSVRead function if you have time :)