Im new to Jmeter and web applications at all, I need some help with a json post.
I have an application with a POST request that sends a json string to save the data that was created/changed.
Here an example of the json code that is sent through the POST request
{"ID":0,"Description":"Test 1"}
With that the first user will create a new registry "Test 1", the second user will create another registry with the same description. I´d like to be able to set the ID and Description info as variables to manipulate them. When the post receive ID 0 is to make a new registry, when It receive an specific ID is to update that registry.
I´m trying to simulate some scenarios that user 1 create, user 2 update or user 1 create, user 2 create different. Things like that.
If your aim is to update the ID and the Description # run time,
Keep the ID and the Description in a CSV file. (something like below)
0, Test1
0, Test1
1, Test2
Use "CSV Data Set Config" (under Config element) to read the CSV file. update the file name and enter "ID,Description" in the variable names.
Update the JSON as
{"ID":${ID},"Description":"${Description}"}
This approach will read the data from CSV and update the JSOn # run time and send the request.
first thread / loop will take the first row and second thread will take the second row.
It should work..let me know if anything.
Related
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'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.
The following is the scenario I want to run in JMeter: I have one CSV file (file1.csv) containing 100 userIds and passwords. I have created a Thread Group containing 100 users. I want each user to read one row of userId and password from file1.csv. For this I have added a CSV File Config element. Now, I want each of these users to read dynamic CSV file (for first row of userId and password from file1.csv it should read file2.csv, for
second row of userId and password from file1.csv it should read file3.csv, for third row of userId and password from file1.csv it should read file4.csv and so on ) containing some rows. Each row contains parameters for a HTTP request.
Can anyone tell me how to do this in JMeter?
I am generating the one csv file(file1.csv) containing user name and password and other csv files(file2.csv,file3.csv,file4.csv and so on) containing some records.
The easiest solution would be adding a Counter test element or __counter() function to generate incrementing postfix for secondary CSV files on each iteration and using __CSVRead() function for extracting data from your file1.csv, file2.csv, etc.
See How to Use JMeter Functions posts series to learn more about using functions in JMeter tests
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
I am trying to create 10 users at the same time in Jmeter, using REST APIs.
Test Data i.e. input is taken from CSV files (The details of users like user name, last name , mobile)
For this I have added one thread group,User Defined Variable,HTTP Header Manager, HTTP Request Sampler (which perform successful login into web application), JSON PATH EXTRACTOR ( to extract auth token, which will be used while adding user)
To Add User, I have used one "Loop Controller" - "HTTP Request Sampler" - HTTP Header Manager, CSV Data Set Config.
And to track result, View Results Tree and Aggregate Report.
Please tell me what would be the syntax of parameters which I am passing in "Body Data" section of HTTP Request sampler, so that it can read values from csv files.
Below is the syntax I am using now to add single user.
{
"phoneNo": "9998885551",
"lastName": "john25",
"email": "azp25#gmail.com",
"firstName": "ricky25",
"mobileNo": "9820420420"
}
If your CSV file looks like:
9998885551,john25,azp25#gmail.com,ricky25,9820420420
9998885552,john26,azp26#gmail.com,ricky26,9820420421
....
Configuration should be the following:
Filename: full path to your source .csv file
Variable Names: phone,lastname,email,firstname,mobile
Delimiter: ,
Populate other values according to your test scenario i.e. whether you want test to stop on .csv file end or re-spin or whatever.
And your HTTP Request should look like:
The main point is that variables defined in the CSV Data Set Config need to match the ones in the HTTP Request.
See Using CSV DATA SET CONFIG guide for detailed instructions.
I would also recommend adding the following entry to your HTTP Header Manager:
Name: Content-Type
Value: application/json
elsewise your request will be treated like plain text and may fail.
Also don't forget to disable View Results Tree listener for actual load test run as it consumes a lot of resources and may lead to out-of-memory errors on JMeter side.
Also,if your formparam\ Body data contains multiple parameters like this:
UserName=abc
password=abc123,
Instead of created two columns for userName and password, it can be given in single column like this:
UserName=abc&password=abc123
This way you can loop through multiple\different URL's which takes different numbers of bodydata
E.g.: If URL1 takes only username as body data and URL2 takes Username & password as body data the above will be an easy solution.