This repository contains the full required setup to write the performance tests for the web application using Gatling.
Gatling is an open-source load and performance testing framework based on Scala, Akka and Netty.
Gatling is a powerful tool, you can simulate hundreds of thousands of requests per second on your web application and get high-precision metrics.
At the end of your test, Gatling automatically generates an exhaustive, dynamic and colorful report. That provides the clear and detailed analysis of running scripts.
Step 1: Implement the requests to your pages
import performance.conf.ServicesConfiguration import io.gatling.core.Predef._ import io.gatling.http.Predef._
object HelloWorldRequests extends ServicesConfiguration {
val baseUrl = baseUrl("hello-world-frontend")
def navigateToLoginPage = http("Navigate to Login Page") .get(s"$baseUrl/login") .check(status.is(200))
def submitLogin = { http("Submit username and password") .post(s"$baseUrl/login": String) .formParam("userId", "${username}") .formParam("password", "${password}") .check(status.is(303)) .check(header("Location").is("/home")) }
def navigateToHome = http("Navigate To Home") .get(s"$baseUrl/home") .check(status.is(200))
}
Step 2: Setup the simulation
import performance.simulation.ConfigurationDrivenSimulations import HelloWorldRequests._
class HelloWorldSimulation extends ConfigurationDrivenSimulations {
setup("login", "Login") withRequests (navigateToLoginPage, submitLogin)
setup("home", "Go to the homepage") withRequests navigateToHome
runSimulation() }
Step 3. Configure the journeys journeys.conf
journeys {
hello-world-1 = { description = "Hello world journey 1" load = 9.1 feeder = data/helloworld.csv parts = [ login, home ] }
hello-world-2 = { description = "Hello world journey 2" load = 6.2 feeder = data/helloworld.csv parts = [ login ] }
}
Step 4. Configure the tests application.conf
runLocal = true
baseUrl = "http://helloworld-service.co.uk"
perftest { rampupTime = 1 constantRateTime = 5 rampdownTime = 1 loadPercentage = 100 journeysToRun = [ hello-world-1, hello-world-2 ], labels = "label-A, label-B" #optional percentageFailureThreshold = 5
}
} Step 4. Configure the user feeder helloworld.csv
username,password person1, 123 person2, 567
Make sure 'runSmokeTest = true' in application.conf. Then run this command : sbt gatling:test
Make sure 'runSmokeTest = false' in application.conf. Then run this command : sbt gatling:test
description will be assigned to the journey in the test report
load is the number of journeys that will be started every second
feeder is the relative path to the csv feeder file. More here
parts is the list of parts that combined create your journey
You can have as many journeys as you like in journeys.conf, the simulation will start and run them all together.
Contains the name of the service and the port when running locally. Read the services-local.conf file for more details and examples.
runLocal boolean value to run test locally. Default value is true.
baseUrl is the default url for every service. Read the application.conf file for more details and examples.
rampupTime is the time in minutes for the simulation to inject the users with a linear ramp up
constantRateTime is the time in minutes for the simulation to inject users at a constant rate
rampdownTime is the time in minutes for the simulation to inject the users with a linear ramp down
loadPercentage is the percentage of the load for the journeys. Read the application.conf file for more details and examples.
journeysToRun contains the journeys that will be executed. Leave it empty if you want to run all the journeys
labels optional string containing a comma-separated list of test labels. Read the application.conf file for more details.
percentageFailureThreshold optional int. Read the application.conf file for more details.
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