Making a test for a sealed trait in scala

I have a sealed trait that I want to write tests for. However, it is not possible to create an object of this sealed trait in the testing class. How can you test in this case.

Myclass.scala

sealed trait BaseTrait{
  def myFunct = //an implemented function
}

case class SecondClass extends BaseTrait {
  // This class I can test
  // ...
}

MyclassTest.Scala
class MyclassTest extends WordSpec with MustMatchers{

 //Here I want to write a test case for the function within the sealed trait

}

      

        
        
        
      

    

I am working on a project with Play Framework 2.3.6 and Scala and using ScalaTestPlus for testing.