./gradlew test for Scala projects

build.gradle

buildscript {
  repositories {
    maven {
      url "https://plugins.gradle.org/m2/"
    }
  }
  dependencies {
    classpath "com.github.maiflai:gradle-scalatest:0.11"
  }
}
apply plugin: 'scala'
apply plugin: "com.github.maiflai.scalatest"
ext {
    scalaMajorVersion = '2.11'
    scalaVersion = "${scalaMajorVersion}.7"
}
repositories {
    mavenCentral()
}
dependencies {
    compile     "org.scala-lang:scala-library:${scalaVersion}"
    testCompile "junit:junit:4.12"
    testCompile "org.scalatest:scalatest_${scalaMajorVersion}:2.2.6"
    testRuntime "org.pegdown:pegdown:1.1.0"
}

src_main_scala_foo_Sample.scala

package foo

object Sample {
  def sayHelloTo(name: String): String = s"Hello, $name!"
}

src_test_scala_foo_SampleSpec.scala

package foo
import org.scalatest._
//import org.junit.runner.RunWith
//import org.scalatest.junit.JUnitRunner

//@RunWith(classOf[JUnitRunner])
class SampleSpec extends WordSpec with Matchers {
  "Sample" should {
   "say hello to Martin" in {
      Sample.sayHelloTo("Martin") should equal("Hello, Martin!")
    }
  }
}