Alternative of OneAppPerSuite in specs2 scala testing - scala

Question

I am writing unit test cases using specs2 and my application is started and stopped for each test instances.
import org.specs2.mutable._
class HelloWorldSpec extends Specification {
"The 'Hello world' string" should {
"contain 11 characters" in new WithApplication {
"Hello world" must have size(11)
}
"start with 'Hello'" in new WithApplication {
"Hello world" must startWith("Hello")
}
"end with 'world'" in new WithApplication {
"Hello world" must endWith("world")
}
}
}
As mentioned in the documentation for each test case application is started and stopped.
I have found a workaround from the link. Application initializes only once (I haven' tested it yet) for each Test Class.
import org.specs2.mutable._
class HelloWorldSpec extends Specification {sequential
step(Play.start(App)) //supposedly App is iniatilized
"The 'Hello world' string" should {
"contain 11 characters" in {
"Hello world" must have size(11)
}
"start with 'Hello'" in {
"Hello world" must startWith("Hello")
}
"end with 'world'" in {
"Hello world" must endWith("world")
}
}
step(Play.stop())
}
But what if we have multiple classes and we want a single start and stop of the app.
import org.specs2.mutable._
class HelloWorldSpec extends Specification {sequential
step(Play.start(App)) //supposedly App is iniatilized
"The 'Hello world' string" should {
"contain 11 characters" in {
"Hello world" must have size(11)
}
"start with 'Hello'" in {
"Hello world" must startWith("Hello")
}
"end with 'world'" in {
"Hello world" must endWith("world")
}
}
step(Play.stop())
}
import org.specs2.mutable._
class HitchHikerSpec extends Specification {sequential
step(Play.start(App)) //supposedly App is iniatilized
"The 'Hitch Hiker' string" should {
"contain 11 characters" in {
"Hitch Hiker" must have size(11)
}
"start with 'Hitch'" in {
"Hitch Hiker" must startWith("Hitch")
}
"end with 'Hiker'" in {
"Hitch Hiker" must endWith("Hiker")
}
}
step(Play.stop())
}
How would I start and stop app for once?
There is a similar solution implemented in scalatest using OneAppPerSuite.
Here is the link and example.
import play.api.test._
import org.scalatest._
import org.scalatestplus.play._
import play.api.{Play, Application}
import play.api.inject.guice._
// This is the "master" suite
class NestedExampleSpec extends Suites(
new OneSpec,
new TwoSpec,
new RedSpec,
new BlueSpec
) with OneAppPerSuite {
// Override app if you need an Application with other than non-default parameters.
implicit override lazy val app: Application =
new GuiceApplicationBuilder().configure(Map("ehcacheplugin" -> "disabled")).build()
}
// These are the nested suites
#DoNotDiscover class OneSpec extends PlaySpec with ConfiguredApp
#DoNotDiscover class TwoSpec extends PlaySpec with ConfiguredApp
#DoNotDiscover class RedSpec extends PlaySpec with ConfiguredApp
#DoNotDiscover
class BlueSpec extends PlaySpec with ConfiguredApp {
"The OneAppPerSuite trait" must {
"provide an Application" in {
app.configuration.getString("ehcacheplugin") mustBe Some("disabled")
}
"make the Application available implicitly" in {
def getConfig(key: String)(implicit app: Application) = app.configuration.getString(key)
getConfig("ehcacheplugin") mustBe Some("disabled")
}
"start the Application" in {
Play.maybeApplication mustBe Some(app)
}
}
}
Can something similar be implemented in specs2?

Answer 1

With specs2 you can do something similar with specification references:
class SuiteSpec extends Specification { def is = s2"""
${link(StartSpec).hide}
${ "first spec" ~ new Spec1Spec }
${ "second spec" ~ new Spec2Spec }
${link(StopSpec).hide}
"""
}
object StartSpec extends Specification { def is = s2"""
${step(println("start"))}
"""
}
class Spec1Spec extends Specification { def is = s2"""
example1 $e1
"""
def e1 = { println("example1"); ok }
}
class Spec2Spec extends Specification { def is = s2"""
example2 $e2
"""
def e2 = { println("example2"); ok }
}
object StopSpec extends Specification { def is = s2"""
${step(println("stop"))}
"""
}
Then if you run:
testOnly *Suite* -- all
You should see the following lines printed out:
start
example1
example2
stop