I have recorded a series of 5 HTTP requests in a thread group (say TG). The response value of a request has to be sent as a parameter in next request, and so on till the last request is made.
To send the parameter in first request, I have created a csv file with unique values (say 1,2,3,4,5).
Now I want this TG to run for all the values read from the csv file (In above case, TG should start running for value 1, then value 2, till 5).
How do I do this?
Given your CSV file looks like:
1
2
3
4
5
In the Thread Group set Loop Count to "Forever"
Add CSV Data Set Config element under the Thread Group and configure it as follows:
Filename: if file is in JMeter's bin folder - file name only. If in the other location - full path to CSV file
Variable Names: anything meaningful, i.e. parameter
Recycle on EOF - false
Stop thread on OEF - true
Sharing mode - according to your scenario
You'll get something like:
See Using CSV DATA SET CONFIG guide for more detailed explanation.
Another option is using __CSVRead() function
This method of creating individual request for each record will not be scalable for multiple records. There is another scalable solution here - Jmeter multiple executions for each record from CSV
Related
how can we create a block size in JMeter with CSV config?
I have 5 multiple users and one Bulkuser.csv file with 4 columns,
The file has around 2000 values.
I wish to create a block of 400 values for my 5threads[users].
1st USER WILL USE 1st – 400 VALUES (Values in ROW 1-400)
2nd USER WILL USE NEXT 5 VALUES (Values in ROW 401-800)
and so on..
How can we implement this? is there a beanshell pre-processor script for each data read and decide to read the specific file as per thread number?
As of JMeter 5.3 this functionality is not supported, the only stable option I can think of is splitting your Bulkuser.csv into 5 separate files like user1.csv, user2.csv, etc. and use __threadNum() and __CSVRead() functions combination for accessing the data like:
${__CSVRead(user${__threadNum}.csv,0)} - reads the value from column 1 from user1.csv file for 1st thread (for 2nd thread it will be user2.csv file, etc)
${__CSVRead(user${__threadNum}.csv,1)} - reads the value from column 2
.....
${__CSVRead(user${__threadNum}.csv,next)} - proceeds to the next row
More information: How to Pick Different CSV Files at JMeter Runtime
I am new to Jmeter and doing a POC to do a load test on a web application.
What I am trying to do:
I have a total of 4 user logins(surgeons). Each Login is associated with 'n' number of patients.
I've created 2 CSV files
1. one with the user login and password for surgeons
2. another CSV file that contains the PatientName, PatientID and the Surgeon associated with that Patient like below.
PatientName,PatientId,loginName
Pa1,PID1,user1
Pa2,PID2,user1
Pa3,PID3,user1
Pa4,PID4,user1
Pa5,PID5,user2
Pa6,PID6,user2
Pa7,PID7,user3
Pa8,PID8,user4
My Scenario:
Login as User.
Navigate to Each Patient Dashboard as per their associations.
log out of the application.
My Testplan
Thread Group (4 users, Ramp up time as 1 sec, 1 loop)
-csv1(with username, password )
-Login Page and Navigate to the Main page
- RunTime Controller (To sustain the load of a set amount of time)
-- While Loop(to loop between the patient dashboard of the surgeon/user logged in)
---CSV2 (the data as shown above)
----Navigate to Dashboard
----Navigate to Main
-Log out of the Application
What I want to achieve:
I want to use the single thread group and run it concurrently for all the 4 users. In this process, once the user login, the user should only those patient data from the CSV which are associated.
For Ex:
When the Thread1 is running with User1 login, he should only able to loop through Pa1, Pa2, Pa3, Pa4 users
When the thread2 is running with User2 login, user should only read the Pa5, Pa6 data.
Like this, each user login should only pick those users as per their associations mentioned above.
Is there any way, I can use this single CSV2 file and achieve this task? so that I don't have to create n number of the thread of n numbers of logins with n number CSV files each containing the data specific to the user login.
According to JMeter Test Elements Execution Order
0. Configuration elements
Pre-Processors
Timers
Sampler
Post-Processors (unless SampleResult is null)
Assertions (unless SampleResult is null)
Listeners (unless SampleResult is null)
Being a Configuration Element CSV Data Set Config is initialized once and before anything else therefore you won't be able to use the current variable from 1st CSV Data Set Config in 2nd CSV Data Set Config.
The solution is using __CSVRead() function instead, JMeter Functions are evaluated in the place where they appear in the Test Plan so you can use any hardcoded value or JMeter Variable or another function there.
More information: How to Pick Different CSV Files at JMeter Runtime
1. CSV Data Set Config for Surgeon credentials (loginNameSurgeon & Password)
2. Login Request (take first surgeon credentials from CSV)
3. While ${__jexl3("${loginNameSurgeon}" != "${loginName}")}
a. CSV Data Set Config for patient data w.r.t surgeons (PatientName,PatientId,loginName)
b. If Controller - ${__jexl3("${loginName}" != "<EOF>")} // to check if we have any more loginName left
c. Dashboard request
d. Debug Sampler // Just to validate if the variables are in place.
4. Logout request
I am new to Jmeter and trying to carry out the following flows:
User Login with username and password
Page 1 is displayed with 10 invoices - User select ten invoices -
10 ajax call is executed (invoice1, invoice2,invoice3.. json file is generated with invoices as request)
Page 2 is displayed to view invoices
User log out
I have recorded the flow with blazemeter plugin on chrome.
The thread group in Jmeter has the following tasks:
I have 10 users in a file called users.txt and i am using CSV Data
set config to load them.
For each user I will load only 10 invoices from invoices.txt using
CSV Data set config to load them.
Since I have 10 users and each user needs 10 invoices, my
invoices.txt has 100 unique invoices.
Please find csv config for invoice below:
The problem is that I need each user to be assigned with 10 unique invoices and those 10 invoices cannot be allocated to another user.
Any idea how I can load 10 unique invoices for each user and make sure those invoices are not assigned again to another user?
invoices.txt should have only unique IDs before test start, you can share the IDs using:
CSV Data Set Config inside loop of users with attributes:
Sharing mode - All Threads - ID won't be repeated
Recycle on EOF? - False - for not to get invalid Id (<EOF>)
Stop thread on EOF? - True - Stop when file with unique IDs ends
You can consider using HTTP Simple Table Server instead of 2nd CSV Data Set Config.
HTTP Simple Table Server has KEEP option, given you set it to FALSE each used "invoice" will be removed, it will guarantee uniqueness even in case when you run your test in Distributed (Remote) mode
You can install HTTP Simple Table Server (as well as any other JMeter Plugin) using JMeter Plugins Manager
I've multiple http samples in Test Plan but i want to run only one request for multiple times based on csv data set config and remaining http requests will run once particular sample is complete all the iteration based on csv data set config.
In above image i've 5 http samples and i've csv data set for first request,once first request is run for entire csv data set test data then another samples should run,please provide solution how to perform this type of operation in jmeter.
you can use Loop Control and provide the number of hits you needed.
To go to Loop Control:
Right click on the Thread/ThreadGroup
Click on Add
select the Logic controller
Select the Loop Controller
According to the problem, there is a need to execute a particular request to execute in a loop. The loop could be organized in the following way.
-> Thread Group
-> Loop Controller
-->Particular Request
-> Other Request
The CSV Dataset could be found in Config Element and should contain a path to a particular file with data (e.g. accounts.csv).
Both elements could be located in
Loop controller: Add ->Logic Controller -> Loop Controller
CSV Data Set : Add -> Config Elements -> CSV Data Set Config.
The loop can run for the exact amount of records in a file if
Loop Count is equal to a number of strings in the accounts.csv
Forever, it could be stopped by Test Duration automatically or by Stop button.
The CSV Data Set config should have a path to a file with data.
If a file contains headers, then Variables will be assigned based on column names from first string, otherwise, it is necessary to provide variables names in configuration.
ANSWER: If you use 9 variables and all of them are set as header names in a file, then don't provide them in CSV Data Set Config. They will be created automatically, so you can use all 9 variables through names in your file.
If headers are not provided, set 9 all in a Variable Names field, using comma as separator.
Configure your CSV Data Set Config like:
Reference name: foo
Recycle on EOF: false
Stop thread on EOF: false
Put the CSV Data Set Config under the While Controller and put ${__javaScript("${foo}" != "<EOF>",)} into "Condition" input
Add If Controller under the While Controller and put "${foo}" != "<EOF>" into the "Condition" input
Put your first request as a child of the If Controller
Replace foo with your actual JMeter Variable reference name everywhere in the script.
This way JMeter will loop until there are entries in the CSV file and will proceed with the remaining requests when the end of CSV file will be reached.
See Reading all Values from the CSV and Continue chapter of the Using the While Controller in JMeter article for more detailed information on configuring JMeter for your scenario.
You can verify with only one variable and Rest variable you don't required in If and while controller.
I have an scenario in which there are 5 times existence of same email id in one flow(scenario). I want to take a data from csv file which should be same for entire flow. By default jmeter updates the value on each occurrence, but i need the value to be updated in each iteration. Can this be done in jmeter?
I trying to take same value for an iteration in jmeter from created csv.
By default, the file is only opened once, and each thread will use a different line from the file.
Means , JMeter thread will use a different value for each iteration not for each occurrence.
In below example , "Thread Group" has "two samplers" and each sample reads data from the same "CSV data file". Means Thread Group has "TWO OCCURRENCES" of the "name", but JMeter uses same value ("jmeter", is a value in CSV file) for each iteration (means each occurrence has same name (jmeter) ). Check below images for more details
Thread Group:
Results Tree:
Csv File: