Integration tests sourceSet script for a Gradle Java project

integrationTests.gradle

sourceSets {
    integrationTest {
        compileClasspath += sourceSets.main.output + configurations.testRuntime
        runtimeClasspath += output + compileClasspath
    }
}

configurations {
    integrationTestCompile {
        extendsFrom configurations.testCompile
    }
    integrationTestRuntime {
        extendsFrom configurations.testRuntime
    }
}

idea {
    module {
        testSourceDirs += file('src/integrationTest/java')
    }
}

task integrationTest(type: Test) {
    testClassesDir = sourceSets.integrationTest.output.classesDir
    classpath = sourceSets.integrationTest.runtimeClasspath

    build.dependsOn it
}