I have a request I want to send using Talend API tester.
In the request there are instances where I want to send a payload such as:
{ "channel" : "${channelId}" }.
But Talend API tester evaluates anything in a ${} as an environment variable, thus they payload sent will be in the form:
{ "channel" : "channelId" }.
Is there any way to force the API tester to ignore the ${} delimiter, and send it with the payload so that it may be evaluated internally once it has reached the server.
My issue was caused by using "Talend API Tester" as my API Client software.
This API tester allows for Environment Variables to be set which will be evaluated before the payload is sent.
Since I had no environment variable set to "channelId" the content: ${channelId} was being evaluated to just "channelId".
To solve the issue I have found two solutions:
Use a different API Client such as Postman API Client.
Set Talend API Tester to not evaluate Environment Variables by unchecking the [Enable Body Evaluation] button just below the Body section in the Talend API Tester. ( I had looked into the main Settings, but never found any solution. It wasn't in the Settings, but on the middle of the main Client)
Related
When using .Net application,
and checking error logs,
getting below error: Object reference not set to an instance of an object.
Most probably you're sending the wrong request due to missing or improperly implemented correlation
So if you have recorded a request using HTTP(S) Test Script Recorder most probably there is at least one parameter there which is supposed to be dynamic, to wit
extracted from the previous response using a suitable JMeter Post-Processor
stored into a JMeter Variable
and the dynamic variable to be sent along with the request instead of recorded hard-coded value
In .NET web applications the most commonly used parameter is ViewState, however other may also be required like EventValidation
so given you properly handle these dynamic parameters you should start getting "good" responses, see ASP.NET Login Testing with JMeter for example handling of the dynamic parameters.
Also don't forget to add HTTP Cookie Manager to your test plan.
How can I handle data from ":/some/api/link" while I am recording using JMeter it works and when I try it again it shows "null" message in 'View results tree'.
In the majority of cases you won't be able to record and replay you test as modern applications and web APIs normally use dynamic parameters for authentication and security purposes. So most probably your Test Plan should look as follows:
1st request
Post Processor (in case of REST API it will be JSON Extractor, in case of SOAP API it will be XPath Extractor) to extract any dynamic parameters and save them into JMeter Variables
2nd request where you should replace hard-coded recorded values with the variables defined in the previous step
The easiest way to detect the dynamic parameters is recording your test 2 times and compare the generated requests, you will need to correlate parameters which differ.
See API Testing With JMeter and the JSON Extractor for more details.
I'm trying to learn J-Meter.
When I'm running a sample script of logging into a site using both valid/invalid credentials,it doesn't stop thread execution when invalid login credential is used and also login is not recorded in database.
Does it actually login to the website or only creates virtual login to create a similar environment.Is there any way to achieve this using Samplers?
JMeter is/acts as a headless browser.
Whatever your browser with an UI does, JMeter can also do - except executing a javascript. So, If you had recorded your script correctly - JMeter can login to the actual application as well.
Jmeter is not like QTP/Selenium. It does not know if it is a valid credential/invalid credential. It passes/fails the request based on the HTTP codes. If the HTML response from the server comes with a 200 http code, It passed for JMeter. If the server responds with code 500, JMeter fails the request. But JMeter also provides a way to validate the response you get - Assertion. You can use Response Assertion to see if you are seeing the home page or not to confirm if the user has logged in successfully.
To stop the test on error, select the appropriate option here in thread Group properties.
JMeter is a very nice tool & have been using it for 2 years with no issues.
Good luck!
Does your script have Config Element -> HTTP Cookie Manager? It needs cookie for the login function.
If your script has many transactions with the same level with login transaction and the option you select in your Thread Group is Continue, all transactions will be executed no matter login transaction is passed or failed.
In case you want the other transactions will not be executed if login fails, let add a Regular Expression Extractor as child of the login transaction to retrieve the text Dashboard, put other transactions into a Logic Controller -> If Controller. Suppose the Regular Expression Extractor has name Dashboard and Default value is NotFound, then the Condition of If Controller will be "${Dashboard}"!="NotFound"
JMeter automatically treats 2xx and 3xx HTTP Response Codes successful so it won't be able to detect failed login unless you explicitly tell it to check presence or absence of some specific content in the response data.
So if you add a Response Assertion you will be able to conditionally fail sampler and choose what to do in case of failure via "Action to be taken after a Sampler error" on Thread Group level.
See How to Use JMeter Assertions in Three Easy Steps guide for more details on the assertions domain.
If you're unsure what JMeter Sampler is doing you can check request and response details via View Results Tree listener. If you cannot simulate login event in majority of cases it is due to missing HTTP Cookie Manager and/or failed correlation of dynamic mandatory parameter(s) like Viewstate, CSRF token, etc.
So basically I need to extract an auth token from header response of 1st http request and then use the extracted data in 2nd (and all the following) http requests cookies.
The issue here is, that I have cookie manager set for the whole controller and instead of getting actual data I get the name of variable in my cookie ".authToken=${auth}".
I am guessing the reason is that the variable is not declared when the test reaches Cookie manager, but I would expect jmeter to be smart enough to declare the variable when it gets to the regular expression extractor.
Structure
Thread
Cache Manager
Cookie Manager (Cookie Policy:compatibility; Implementation:HC3)
Controller
Http Request
Regular expression extractor
Http request (I need to use value extracted above in Request Cookie here)
Http request (I need to use the same value in Request Cookie here)
Http request (I need to use the same value in Request Cookie here)
.....
Details:
All the http requests are recorded with implementation HttpClient3.1
Pretty sure I have everything configured correctly as in variable names, regular expression since it works in a very specific case:
The only time it seemed to work correctly was when I had Cookie manager inside the http request and disabled the 'main' Cookie manager (the one for the whole controller). Then it got extracted correctly, but that would be really silly workaround for such a basic requirement and also I have many http requests (over 100) where I need to use the extracted value.
Jmeter doesn't need to use the variable before it's declared by the regular expression extractor, I made sure that the domain is correct and it gets used for the first time after it should have been extracted.
Another workaround I thought of would be having separate threads, have them linked and send the variable in between them, launching the next one once the data gets extracted, but that seems a little bit too drastic.
What I tried:
Splitting http requests into 2 different controllers and using 2 different Cookie managers - got "${auth}" instead of some value
Defining user variable above controller and then using "Apply to: Jmeter Variable" option - again got just string "${auth}" instead of some value.
Moving the Cookie manager to a position after the http request which is used for the extraction - again "${auth}" instead of some value
Setting different cookie's policy (not all of them, but few)
Setting "CookieManager.save.cookies=true" in jmeter.properties (and still have on true)
Any help/ideas are appreciated. I have been trying to figure this out for about an hour and I think I must be missing something very simple.
Alright, finally got this resolved after roughly 2 hours.
Thanks to this article, I was able to do what I needed
https://capacitas.wordpress.com/2013/06/11/thats-the-way-the-cookie-crumbles-jmeter-style-part-2/
In nutshell: You need to use beanshell pre-processor and add the cookie manually
Here is the beanshell script in case the site dies:
import org.apache.jmeter.protocol.http.control.CookieManager;
import org.apache.jmeter.protocol.http.control.Cookie;
CookieManager manager = sampler.getCookieManager();
Cookie cookie = new Cookie("CookieName", vars.get("YourExtractedVariable"), "Domain", "Path", false, 0);
manager.add(cookie);
Suppose that I invoke the following HTTP request:
https://accounts.example.com/oauth2/auth?
scope=openid+email&
nonce=53f2495d7b435ac571&
redirect_uri=https%3A%2F%2Foauth2demo.appspot.com%2Foauthcallback&
response_type=id_token+token&
client_id=753560681145-2ik2j3snsvbs80ijdi8.apps.googleusercontent.com
Which yields the following redirect response:
https://oauth2demo.appspot.com/oauthcallback#
access_token=ya29.AHES6ZSzX
token_type=Bearer&
expires_in=3600&
id_token=eyJhbGciOiJSUzI1NiJ9.eyJpc3MiOiJhY2NvdW50cy5nb29nbGUuY29tIiwiY...
What is the point of the callback parameter, given that the returned metadata, containing id_token, etc., is positioned after a hash fragment in the URI, and are therefore not persisted as parameters to the callback function? How can a server-side callback receive the various tokens?
The response type that is used here is a so-called "Implicit" response type which is primarily meant for in-browser (e.g. Javascript) clients, in which case the Javascript code that is served on the callback URL can access the parameters in the fragment. Web applications should do either one of:
stick to the code flow which is meant for web application clients
use the Form Post response mode (http://openid.net/specs/oauth-v2-form-post-response-mode-1_0.html) if supported by the OP
serve Javascript on the callback URL that parses out the parameters from the fragment and POSTs them to the server
Bottom line is that if you need the tokens server-side, you should most probably use the code response type.