Testing with Scala / SBT

Testing with Scala / SBT

Pre-Req :
Os - Linux ubuntu / debian
Java /jdk 1.8 +
scala 2.11 +
Intellij
Install sbt plugin in Intelli
Create an scala project in Intelli using sbt

Commands:
scala -version
sbt sbtVersion

----build.sbt (add below line)--------
scalaVersion := "2.xx.0"
libraryDependencies += "org.scalatest" % "scalatest_2.xx" % "3.0.8" % "test"
libraryDependencies +="org.pegdown" % "pegdown" % "1.4.2" % "test"
libraryDependencies += "org.mockito" % "mockito-all" % "1.8.4"
libraryDependencies += "org.scalamock" %% "scalamock" % "4.3.0" % "test"
testOptions in Test += Tests.Argument(TestFrameworks.ScalaTest, "-h", "target/test-reports")
(click on auto-import link when it appears)


--- install sbt----
open terminal
echo "deb https://dl.bintray.com/sbt/debian /" | sudo tee -a /etc/apt/sources.list.d/sbt.list
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2EE0EA64E40A89B84B2DF73499E82A75642AC823
sudo apt-get update
sudo apt-get install sbt

---- Config sbt in IntelliJ----
to Debug/Run test in sbt:
1. Edit Configurations
2. "+" Add Scala Test
3. In the new file , Select the test file (test.scala)
4. Check "use sbt"
5. Apply and OK
6. rt ck on test file in File structure/ editor / tool bar - ck run/Debug
-----Run Sbt in terminal -----
cd to  projects >
run command "sbt test"
---------------------

Src File : src/main/scala/sqCalculator.scala
object sqCalculator extends App {
  def sq(x: Int) = {
    x * x
  }
}

Test File : test/scala/sqCalculatorTest.scala
import org.scalatest.FunSuite
class sqCalculatorTest extends FunSuite {
  test("sqCalculator.cube") {
    if(sqCalculator.sq(3) === 9){
      println ("passed")
      assert (true)
    }
    else{println (false)}
  }
}
---------------------//Mockito----------------------------
//test/scala/LoginService.scala 

trait LoginService {
  def login(name: String, password: String): String
}

//test/scala/LoginServiceTest.scala
import org.scalatest.FunSuite
import org.scalatest.BeforeAndAfter
import org.scalatestplus.mockito.MockitoSugar
import org.mockito.Mockito._

class LoginServiceTest extends FunSuite with BeforeAndAfter with MockitoSugar {
  before {
    println("Start")
  }
  after {
  println("Ends")
  }

  test ("test login service"){
    val service = mock[LoginService]
    when(service.login("johndoe", "secret")).thenReturn(("johndoe"))
    when(service.login("joehacker", "secret")).thenReturn("an")
    val johndoe = service.login("johndoe", "secret")
    val joehacker = service.login("joehacker", "secret")
    if(johndoe == "johndoe"){
      assert(true)
    }
    if(joehacker == None)
      assert(false)
    else
        assert(true)
  }
}

----------------ScalaMock--------------------------------
//test/scala/LoginServiceTest2.scala
import org.scalatest.{BeforeAndAfter, FunSpec, FunSuite}
import org.scalamock.scalatest.MockFactory

class LoginServiceTest2 extends FunSpec with BeforeAndAfter with MockFactory  {
  before{
    println("LoginServiceTest2 - start")
  }
  it("val test") {
  val any_name: LoginService = mock[LoginService]
    (any_name.login _) expects("a","a") returning "hi"
    println(any_name.login("a","a"))
  }
  after{
    println("LoginServiceTest2 - end")
  }
}