Stress , load or concurrency testing using rest assured

[vinod komeershetty]

Any pointers or hints on how to perform
Stress , load or concurrency testing using rest assured frame work for apis

[Todd Bradley]

In the past we've built tests in Java using REST-assured and TestNG, and then run them using NGrinder.

On Sun, Aug 28, 2016 at 1:43 PM, vinod komeershetty <komeersh...@gmail.com> wrote:

Any pointers or hints on how to perform
 Stress , load or concurrency testing using rest assured frame work for apis

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[Paul Hoadrea]

Have you succeed doing this with TestNG and NGrinder ?

Have you found any other solutions ? 

I am also interested in this topic, as I will have to do performance in a few months, I was thinking of rewriting the tests in JMeter, but that is not very efficient as I have them already in RestAssured. 

[Johan Haleby]

REST Assured is not built for performance testing so I would rather use a specific tool designed for this purpose. I'm mostly using gatling nowdays and find the DSL to be quite nice.

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[Yulia Atlasova]

For concurrency we used java.util.concurrent that allows to start calls simultaneously. Number of calls depends on available processors.
Countdown latch guarantees that processes would be started simultaneously.

import com.google.gson.Gson;
import org.junit.Test;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.*;

import static io.restassured.RestAssured.UNDEFINED_PORT;
import static io.restassured.RestAssured.given;
import static org.apache.commons.lang3.time.DateUtils.addSeconds;
import static org.junit.Assert.assertTrue;

/**
 * Created by Yulia_Atlasova on 9/25/2016.
 */
public class Example {

    @Test
    public void canCreateLibrariesSimultaneously() throws ExecutionException, InterruptedException {
        int threads = Runtime.getRuntime().availableProcessors();
        ExecutorService service = Executors.newFixedThreadPool(threads);
        CountDownLatch latch = new CountDownLatch(threads);
        List<Future<Library>> futures = new ArrayList<>(threads);
        List<Library> libraries = new ArrayList<>(threads);
        Gson gson = new Gson();
        for (int i = 0; i < threads; i++) {
            Future<Library> future = service.submit(() -> {
                latch.countDown();
                latch.await();
                return gson.fromJson(given()
                        .port(UNDEFINED_PORT)
                        .urlEncodingEnabled(false)
                        .queryParam("RequestId", new Date().getTime())
                        .post().asString(), Library.class);
            });
            futures.add(future);
        }

        for (Future<Library> future : futures) {
            libraries.add(future.get());
        }
        Date now = new Date();
        service.shutdown();
        for (Library library : libraries) {
            Date created = library.getServiceData().getCreatedTimestamp();
            assertTrue("Created timestamp should be within last 2 seconds, but it is: " + created,
                    created.after(addSeconds(now, -2)) && created.before(now));

        }
    }
}


On Sunday, 28 August 2016 23:16:37 UTC+3, vinod komeershetty wrote: