could not find implicit value for parameter env: com.mohiva.play.silhouette.api.Environment[utils.auth.DefaultEnv] - scala

Question

I'm using a Silhouette v4.0 library with play framework 2.5.
And have been trying to write test code using play specs2.
But, I get the following error with my test class as below.
Error Message
[error] could not find implicit value for parameter env: com.mohiva.play.silhouette.api.Environment[utils.auth.DefaultEnv]
.withAuthenticator[DefaultEnv](identity.loginInfo)
^
Here's the test class
package controllers
import com.google.inject.AbstractModule
import org.joda.time.DateTime
import org.specs2.specification.Scope
import org.specs2.matcher._
import org.specs2.mock._
import play.api.test._
import play.api.libs.json._
import play.api.libs.json.Json
import play.api.libs.json.Reads._
import play.api.libs.functional.syntax._
import play.api.libs.concurrent.Execution.Implicits._
import play.api.libs.mailer.{ MailerClient, Email }
import play.api.inject.guice.GuiceApplicationBuilder
import play.api.inject.bind
import com.mohiva.play.silhouette.test._
import com.mohiva.play.silhouette.api._
import com.mohiva.play.silhouette.api.repositories.AuthInfoRepository
import com.mohiva.play.silhouette.api.util._
import com.mohiva.play.silhouette.impl.providers._
import net.codingwell.scalaguice.ScalaModule
import utils.auth.DefaultEnv
class TestControllerSpec extends PlaySpecification with Mockito {
"case" in new Context {
new WithApplication(application) {
val request = FakeRequest(POST, "/api/test")
.withAuthenticator[DefaultEnv](identity.loginInfo) // <-
val result = route(app, request).get
status(result) must be equalTo OK
}
}
trait Context extends Scope {
val identity = User(
loginInfo = LoginInfo(..)
..
)
implicit val env = FakeEnvironment[DefaultEnv](Seq(identity.loginInfo -> identity))
class FakeModule extends AbstractModule with ScalaModule {
def configure() = {
bind[Environment[DefaultEnv]].toInstance(env)
}
}
lazy val application = new GuiceApplicationBuilder()
.overrides(new FakeModule)
.build
}
}
There are some other test classes similar to this class are properly able to compile and execute.
It's kind of implicit problem with scope..
Therefore, I tried to import all the same as another test class which's able to compile properly. But, still unable to compile.
Missing some import?

Answer 1

As the compiler states, you're missing an implicit value. Use the following, which is modeled after one of Silhouette's specs:
class TestControllerSpec extends PlaySpecification with Mockito {
"the POST request" should {
"return an OK response" in new Context {
new WithApplication(application) {
val identity = User(LoginInfo(...))
implicit val env = FakeEnvironment[DefaultEnv](Seq(identity.loginInfo -> identity))
val request = FakeRequest(POST, "/api/test")
.withAuthenticator(identity.loginInfo)
val result = route(app, request).get
status(result) must be equalTo OK
}
}
}
trait Context extends Scope {
...
}
}