gatling | Modern Load Testing as Code
kandi X-RAY | gatling Summary
kandi X-RAY | gatling Summary
Gatling is a load test tool. It officially supports HTTP, WebSocket, Server-Sent-Events and JMS.
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Trending Discussions on gatling
QUESTION
For the following Gatling simulation
...ANSWER
Answered 2022-Apr-11 at 17:08Right now we've tested only with primitive values passed into the Gatling session. It may work if you convert the data into a java.util.Map
. So maybe your best bet is to write some toMap()
function on your data-object. Or if you manage to emit a JSON string, there is a karate.fromString()
helper that can be useful.
So please read the docs here and figure out what works: https://github.com/karatelabs/karate/tree/master/karate-gatling#gatling-session
You are most welcome to contribute code to improve the state of things.
QUESTION
I am writing gatling tests and using JSONPath $..parentId
.
I am getting the response:
ANSWER
Answered 2022-Mar-17 at 09:24What you should be able to do, using JMESPath is:
QUESTION
I have a Gatling scenario where I'm calling the Gatling demo app endpoint. I noticed that the first request is taking a higher time to respond to. For example:
...ANSWER
Answered 2022-Mar-17 at 08:06You're getting it wrong, this is expected.
Because of the way your test is designed, the first request takes more time because it has more work to do:
- perform the DNS resolution
- open the HTTP connection
The next requests for this single virtual user will skip this extra work because:
- the DNS resolution will be in cache
- they will reuse the same keep-alive HTTP connection
QUESTION
I am running gatling script to measure my api performance. Below is the configuration which ramps up the user from 0 to 100 and eventually reaches 400 . Is is true to say in last step constantConcurrentUsers(400) 400 request called per second . Is below script calling 400 request/sec in last step ?
...ANSWER
Answered 2022-Mar-08 at 06:42Absolutely not. Please read the documentation about injection models.
A closed workload model injection will guarantee the number of concurrent users, not the throughput.
For example, assuming scenario is 1 single request and response time is 250ms, 400 concurrent users would mean 400 * 4 = 1,600 requests per second (each virtual user perform 1 request in 250 ms, then is replaced with another one).
As explained in the documentation, closed workload models are definitely NOT the default to go.
You should design your injection profile and your scenario in order to match:
- your expected throughput
- AND your expected number of connections
QUESTION
I have created a shell script which executes maven command.
The command looks like this:
...ANSWER
Answered 2022-Feb-20 at 15:26It is all about quotes.
QUESTION
I want to use Gatling in my Scala 3 / sbt Project.
The problem is that Gatling packages its library without Version-Postfix. So I think you have the same problem for any Scala library that does that.
I tried a few things, for example:
Adding the dependency according to the documentation:
...
ANSWER
Answered 2021-Dec-31 at 15:26Not sure why but gatling-test-framework is not published with the version postfix as you said.
This means that you don't need/can't use the for3Use2_13
as there is no 2.13 version nor 3 version: there's just a single version without postfix.
Looking at its dependencies, version 3.7.2 targets Scala 2.13: https://mvnrepository.com/artifact/io.gatling/gatling-test-framework/3.7.2. As Scala 3 is compatible with Scala 2.13, it should be just fine with your first attempt.
Not sure where the conflict with quicklens comes from but if it comes from Gatling dependency, you can probably exclude the _2.13
version from Gatling (or even globally) as you are pulling the _3
version yourself:
QUESTION
So I'm making a TD game where I can place a gatling gun, and depending on which sector of a surrounding circle the mouse is in, the sprite and bullet path will change.
My difficulty is with creating an algorithm which will tell me which sector my mouse is in.
My circle has 16 sectors, and a radius of 300. Each arc has a length of 117.81. Extending from (300,300), I have an exact list of all the coordinates of the lines, so I am able to currently draw the sector like this: Circle
I'm using a mouse listener to detect the coordinates of my mouse whenever my mouse moves, so I have a "currentPoint" to check within which sector it's in. Based on this information, can anyone think of an easy way to simply return an integer of which sector the mouse is currently inside? Preferably somewhat efficiently.
These are the two ways I'm thinking about how it would look: Two_Ideas
And I did look at this StackOverflow which seemed like a similar problem: Efficiently find points inside a circle sector And I implemented it with Java, but it doesn't seem to translate without having Vectors and I'm a bit too confused about the math to make it work.
Been trying to figure this out for a while, I would love any help with an implementation of any kind, (don't mind adding Trig calculations), along with any help understanding the problem. Thank you!!
...ANSWER
Answered 2021-Nov-28 at 09:49To get sector, you need to get angle relative to point center.
Pseudocode (I am not sure how math functions and rounding look in Java):
QUESTION
I am using Karate + Gatling to test one async backend system.
User in a test
- Files a ticket with the backend
- Waits for the ticket to start processing (max 10 tickets are processing in parallel, rest of them wait in queue)
- When processing starts, wait for it to finish (~ 1min)
- When processing finishes, check result and end test
The problem is that if the test fails in steps 2 or 3 (timeout on GET request, random traffic fail), the ticket still stays on the backend and will take time to process, interfering with the following users.
I would like to delete the ticket manually if the test fails on steps 2 or 3. Is that possible with gatling? Is there some way that I could execute some after
hook if a user ends in failure? Can I know where the test failed?
ANSWER
Answered 2021-Oct-18 at 11:13This is an area where I suggest you do some research and contribute your findings back to the community.
Karate has a concept of hooks: https://stackoverflow.com/a/59080128/143475
So if you implement the RuntimeHook
you should have full-control over detecting errors and performing some custom logic.
That said, teams generally do a pre-clean up because as you have just figured out, it is way more difficult to do a "post-cleanup" - and what happens if that fails as well. Maybe you should just log some transaction ids and do the clean up manually. Refer: https://stackoverflow.com/a/60944060/143475
This answer may give you some creative ideas. For example you can run a Java thread that keeps polling for any state changes in your database: https://stackoverflow.com/a/69406420/143475
Note that there are Gatling specific-ways to approach this:
https://stackoverflow.com/a/56729198/143475
End Gatling simulation when scenario fails BUT generate a report
QUESTION
Were there any group of folks, who were successful with Karate DSL, using Gradle and Junit5 runner?
Should it be @Karate.Test or @Test?
...ANSWER
Answered 2021-Sep-28 at 02:02You can just use the normal @Test
annotation if you use the Runner
API. The JUnit support is just a convenience that you may not need.
Refer to this answer for details: https://stackoverflow.com/a/69298540/143475
Trying to fix this (if there is really an issue) is not a priority for the project developers. We hope that people like you who may be more enthusiastic about Gradle will step forward to contribute code :)
QUESTION
How to add a custom error message for gatling assertions
Current Behavior:-
details("My Scenario").requestsPerSec.between(20, 25)
The above code allows validating the requests per second but unable to pass a custom message when assertion fails . (Like the assertions in Junit libraries)
...ANSWER
Answered 2021-Aug-13 at 07:34That's not possible as of current version (3.6.1). Contributions welcome.
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