integTest.gradle

sourceSets {
    integTest
}

task integTest(type: Test) {
    description = "Runs integration tests."
    testClassesDirs = sourceSets.integTest.output.classesDirs
    classpath = sourceSets.integTest.runtimeClasspath
    maxHeapSize = '1024m'
    mustRunAfter test
}

dependencies {
    integTestCompile sourceSets.main.output
    integTestCompile sourceSets.test.output
    integTestCompile configurations.compile
    integTestCompile configurations.testCompile
    integTestRuntime configurations.runtime
    integTestRuntime configurations.testRuntime
}

gradle.projectsEvaluated {
    gradle.rootProject.allprojects(configureTasksToRunAfter('integTest', 'test'))
}

check.dependsOn integTest

static configureTasksToRunAfter(String taskName, String runAfterTaskName) {
    return { project ->
        Task task = project[taskName] as Task
        project.tasks
                .findAll({ it.name == runAfterTaskName })
                .each({ runAfterTask -> task.mustRunAfter(runAfterTask) })
    }
}