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Testing Frontend integration with Play 2.x (Scala)

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Testing Frontend integration with Play 2.x (Scala)

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What every Java engineer should know about microservices: Reactive Microservices Architecture.  Brought to you in partnership with Lightbend.

For people in hurry here is the code and the steps.

In continuation of Play 2.x (Scala) is it a Spring MVC contender? – Introduction, in this blog, I will demonstrate how we implement a simple test to test the Web layer using TestServer. I will continue from my earlier example of Implementing Controller using Play 2.x (Scala), ScalaMock where I did the mock testing.

Refer Build.scala for build configuration.

In this blog, I will be testing the routes refer CoffeesControllerTest.scala for more details, the snippet is as below,

it("POST /coffees/Colombian/delete should return SEE_OTHER") {
  running(FakeApplication(additionalConfiguration = inMemoryDatabase())) {
 
    val Some(result) = route(FakeRequest(POST, "/coffees/Colombian/delete"))
    status(result) should equal(SEE_OTHER)
  }
}
 
it("POST wrong url /coffees/Colombian/delete1 should return None") {
  running(FakeApplication(additionalConfiguration = inMemoryDatabase())) {
 
    val result = route(FakeRequest(POST, "/coffees/Colombian/delete1"))
    result should equal(None)
  }
}

In the next block I will show how to do end to end testing from web layer using TestServer refer IntegrationTest.scala,

class IntegrationSpec extends Specification {
 
  "Application" should {
 
    "work from within a browser" in {
      running(TestServer(3333), HTMLUNIT) { browser =>
 
        browser.goTo("http://localhost:3333/coffees")
        browser.pageSource must contain("Colombian")
      }
    }
 
    "work from within a browser" in {
      running(TestServer(3333), HTMLUNIT) { browser =>
 
        browser.goTo("http://localhost:3333/coffees")
 
        browser.pageSource must contain("Colombian")
      }
    }
 
    "work from within a browser" in {
      running(TestServer(3333), HTMLUNIT) { browser =>
 
        browser.goTo("http://localhost:3333/coffees")
        browser.pageSource must not contain("Colombian1")
      }
    }
 
  }
}

Also while testing the application from web layer, we need to populate the data in the Global.scala as below,

object Global extends GlobalSettings {
 
  override def onStart(app: Application) {
 
    lazy val database = Database.forDataSource(DB.getDataSource())
 
    database withSession {
      // Create the tables, including primary and foreign keys
      val ddl = (Suppliers.ddl ++ Coffees.ddl)
 
      ddl.create
 
      // Insert some suppliers
      Suppliers.insertAll(
        Supplier(Some(101), "Acme, Inc.", "99 Market Street", "Groundsville", "CA", "95199"),
//...
      // Insert some coffees (using JDBC's batch insert feature, if supported by the DB)
      Coffees.insertAll(
        Coffee(Some("Colombian"), 101, 799, 0, 0),
    }
  }
}

I hope this blog helped you. In the next blog I will implement simple authentication.


 

Microservices for Java, explained. Revitalize your legacy systems (and your career) with Reactive Microservices Architecture, a free O'Reilly book. Brought to you in partnership with Lightbend.

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