I am using HTTP request sampler for API performance testing. My APIs might return a response containing the skiptoken
If response contains the skiptoken, I need to call the API again using the skip token and capture the performance metrics. I required calling the API until there are no skiptoken available in the response.
Please let me know how I can implement this in JMeter
You can add a Post-Processor, for example JSON Extractor, which will extract the skpitoken into a JMeter Variable from the API response.
If the variable is defined you can add If Controller and send another request to the API with the variable from the previous step.
Something like this:
You have to use any of the Post processor according to your API response content. e.g, Json extractor, Regex extractor, Boundary based extractor, whichever suits well.
Then you need to use While Controller instead of If controller. The While controller it will keep executing the API inside it, until the last skiptoken gets retrieved/ not found - refer the screenshot
If you use If controller - It will execute only once and proceed with other APIs
Since, I don't know the exact response body structure - you can use Regex to fetch the value, something like the below
"#odata.nextLink":"([^ ]+)"
Related
I am using Regular Expression Extractor for extracting the header values.
Here is my test plan structure.
I am getting a response in login api is
I want to extract the SRToke, Id1, Id2 and Id3 values from above response header. So I have used Regular Expression Extractor as below
I have also used BeanShell PostProcessor
Now I am getting the error 401 in result
Please give me the solution, what I have done wrong here?
First you need to extract the variables from Response Header section of your Login request. Please refer how to capture from here. https://stackoverflow.com/a/57391175/4481179
After extracting, use HTTP Header Manager as a child of Eventlist Sampler and pass that extracted value as shown below:
You get an error about 401 because you did not add authorized success. You need to know the flow of the system. Maybe its need another parameter beside one parameter BEARER like you.
I think Beanshell won't be required as you are not correlating from cookies, try to find the missing header under the 401 transaction something like Authorization and place the correlated variable there.
Can somebody please explain me how can I use JMeter for Feature testing?
I'm able to create multiple HTTP requests within a Testplan. But I need know the way to capture the previous API response and pass one of the response data to the next API request.
Eg:
1.Create Account.
Request- POST: /account
Response: ID: "Value"
Read account
Request- GET: /account/
JMeter is really more of a load testing tool, and best used as such. Capturing data from responses is possible using the Regular Expression Extractor, which can store extracted values in variables for use in a subsequent request. It is a bit of a pain in the ass to use, though.
On your request, add a Regular Expression Extractor:
Field to check: body
Reference name: EXAMPLE
Regular Expression: \[.*\] #your regex here, stuff in square brackets as example
Match No.: 1
In a subsequent request, you can then use the variables defined by the extractor, e.g. ${EXAMPLE_g0} for the entire match, or ${EXAMPLE_g1} for group 1, etc.
I'm calling a REST request for authentication. And I need to get the session ID sending on response; in order to reuse that in my next request.
session id comes in Response header. When I use view result tree, this is not showing header parameters(response body has no data).
When googling I found a method using Regular expression Extractor method, but seems it works only when data in response body.
Nope, Regular expression extractor can search in headers also. You need to specify where to search.
See example,
This will search in headers and you can specify in main samples, sub samples also.
I would like to profile a REST API using JMeter. I would like to write the test plan such that each user thread performs the following actions:
creates a new resource using HTTP POST
If HTTP 201 Created is received, then extract the new resource URL from the Location header of the HTTP response.
Subsequently update the resource using HTTP PUT
Loop in 3 and measure the response time
It's unclear to me how to use JMeter's conditional logic to break up the tests into these discrete parts. I would appreciate any insight anyone can provide on how to implement this.
You need to use If Controller to express this logic.
You can use Regular Expression Extractor to extract Response code (In field to check, check it and extract response code in a Variable)
Use the previously extracted variable in the If Controller condition
As am new to jmeter please help me in passing the value from a webservice response as the input to the next webservice request
I guess that your web service returns XML (more likely) or JSON.
All you need is to use XPath Extractor Post Processor, get interesting response part, store it to variable and use in next request.
You can address variables next ways:
${YOUR_VARIABLE_NAME}
${__V(YOUR_VARIABLE_NAME)}
I prefer the second option as it allows combining several variables, evaluating functions, etc.