I'm looking for an alternative tool to Gatling and found Locust. I found it's powerful but I wonder how can I extract a Json value and then using that value in the Json payload of the next request (please note the Json payload is in different file). Like in Gatling we can use saveAs() and the value will be store in the session variable, then we can put that value in Json payload.
Thanks,
Hoang
Locust is pretty much just Python, using the requests http client, so look in to the requests documentation for more info.
Lets assume /login returns a session_id in the json response that we want to use in future requests. You would then do something like this in your task:
response = self.client.post("/login")
session_id = response.json()["session_id"]
self.client.post("/foo", json={"session_id": session_id})
Related
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":"([^ ]+)"
I need to send POST request through jmeter. I have checked the requests workflow through browser dev. tools. In my Post request I need to send form data and one string Query. Question is next - if i will add my string Query to URL will it work fine?
Example : somesite.com/something?refURL=someRef
If it is a POST request, usually any form data will be sent in the request body. Not like a query string in the GET request. But the format is same.
refURL=someRef add this in the parameters section.
Check here for more info.
https://www.w3.org/TR/html401/interact/forms.html#h-17.13
Why not? Query string and request body are different beasts and they are processed differently on server side.
Instead of asking this kind of questions, why don't you just record your test using JMeter's proxy server?
References:
URI Syntax - Query Component
HTTP Method Definitions - POST
Yes it will.
You can even use variables like:
/some/path?refURL=${someCalculatedRefUrl}
How can I format json response in jmeter?
I don't want to tell which part of json answer
should be showed. I want to see my response not as
very long one line but as many lines formatted with new lines and
tabs/spaces.
I saw:
http://eclipsesource.com/blogs/2014/06/12/parsing-json-responses-with-jmeter/
Jmeter extracting fields/parsing JSON response
Thanks in advance!
I believe JSON Formatter PostProcessor is what you're looking for
If it is not suitable for you - take a look at JSR223 PostProcessor, it provides prev pre-defined variable (basically SampleResult instance) which gives read/write access to the parent sampler(s) response data so you will be able to do anything you want with the response using Groovy language
I've used Fiddler to capture these HTTP calls. Here's the problem:
I have a HTTP-POST data that looks like below:
Notice how it has many 'employeeIds' and also 'shiftSumIds'.
Now, these Ids are from a previous HTTP response that looks like below:
Is there an easy way to extract those Ids and prepare the POST data? Thanks in advance.
--Ishti
Short answer is JSON Path Extractor available via JMeter Plugins which is designed for getting "interesting" values from JSON data. See Using the XPath Extractor in JMeter guide (look for "Parsing JSON" chapter) for installation instructions and some form of JSON Path language reference.
If it is not enough and you will need some assistance in constructing JSON Path query and building HTTP Request from it - please include text version of response and request using i.e. http://paste.org service as reading large amount of text from small screenshot isn't very handy and chance of getting the answer is minimal
Is there a way to overwrite the http response headers returned in Jmeter? I'm testing a web service that returns JSON and when an invalid request is sent, the JSON response returned doesn't contain application/json (or any for that matter) in the response header. If I save the response to a file, I see the actual JSON returned, but looking at the response in a Results tree doesn't show a response. Unless there is a way to load the response from file and parse the error message from the file, I'm hoping to somehow overwrite the HTTP response header and force jmeter to treat the response as JSON.
Any suggestions are welcome!
Using a beanshell post processor, you can write some script that would force the value for the header, or write out to a file.
You can also add a listener that would write the results to file for you. Granted - this is less convenient for debugging then Tree View.
As it turns out JMeter does not support response header overloading. While the response isn't displayed in the Results tree, it is actually available to other assertions. I was able to still provide assertions to validate responses even though the response was missing from the GUI.