Scala Test Tips

scalaTest.scala

// Retry until it succeeds
class ExampleSpec extends FlatSpec with Eventually {
  eventually {
    futureInt.get shouldBe 1
  }
}

// Extended patience for integration tests
class ExampleSpec extends FlatSpec with Eventually with IntegrationPatience {
  eventually {
    futureInt.get shouldBe 1
  }
}

// Wait for a future to complete rather than try repeatedly until it succeeds as in 'eventually'
class ExampleSpec extends FlatSpec with ScalaFutures {
  whenReady(futureInt) { i =>
    i should be(1)
  }
}

// Get option values with meaningful errors
class ExampleSpec extends FlatSpec with OptionValues {
  optString.value shouldBe "Hello"
}

// Look inside nested structures
case class Address(street: String, city: String, state: String, zip: String)
case class Name(first: String, middle: String, last: String)
case class Record(name: Name, address: Address, age: Int)

class ExampleSpec extends FlatSpec with Inside {
  inside (rec) { case Record(name, address, age) =>
    inside (name) { case Name(first, middle, last) =>
      first should be ("Sally")
      middle should be ("Ann")
      last should be ("Jones")
  }
}