This post shows how to set up a Gatling simulation test using Maven and Scala on IntelliJ IDE.
If you don’t already have Scala plugin for IntelliJ IDE, you can install it from the plugins section under preference:
Once the Scala plugin is installed, then you need to create a Maven project and choose a Scala archetype
If the desired archetype is not listed, you can click the “Add archetype” button and add the following details
<groupId>net.alchim31.maven</groupId> <artifactId>scala-archetype-simple</artifactId> <version>1.6</version>
Next, add the following section to the pom file which indicates which version of libraries we will be using
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<encoding>UTF-8</encoding>
<scala.version>2.11.7</scala.version>
<scala.compat.version>2.11</scala.compat.version>
</properties>
Then, add the required Scala and Gatling dependencies in the pom file
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scala.version}</version>
</dependency>
<dependency>
<groupId>io.gatling.highcharts</groupId>
<artifactId>gatling-charts-highcharts</artifactId>
<version>${gatling.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
And finally, add the build section in the pom file
<build>
<sourceDirectory>src/main/scala</sourceDirectory>
<testSourceDirectory>src/test/scala</testSourceDirectory>
<plugins>
<!-- Gatling Maven plugin that runs the load-simulation. -->
<plugin>
<groupId>io.gatling</groupId>
<artifactId>gatling-maven-plugin</artifactId>
<version>${gatling-plugin.version}</version>
<configuration>
<simulationClass>com.example.perf.simulations.HttpSimulation</simulationClass>
</configuration>
</plugin>
</plugins>
</build>
Once all the sections in the pom file have been updated, we are now ready to create a Gatling simulation class in Scala.
- In src/test/scala, create a package named com.example.gatling.simulations.
- In this package, create a Scala class named HttpSimulation with the following implementation.
package com.example.gatling.simulations
import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.http.config.HttpProtocolBuilder.toHttpProtocol
import io.gatling.http.request.builder.HttpRequestBuilder.toActionBuilder
/**
* Example Gatling load test that sends two HTTP requests to the same URL.
*/
class HttpSimulation extends Simulation {
val theHttpProtocolBuilder = http
.baseURL("https://computer-database.gatling.io")
val theScenarioBuilder = scenario("Scenario1")
.exec(
http("myRequest1").get("/")
)
setUp(
theScenarioBuilder.inject(atOnceUsers(1))
).protocols(theHttpProtocolBuilder)
}
To execute your test, just run
mvn gatling:execute