Unit testing helper or non-interface traits in Scala

Question

This question is about dealing with testing of classes which mix in non-interface traits, that is traits containing some functionality. When testing, the class functionality

Answer 1

How about:

val helpers = new HttpHelpers {
  //override or define stuff the trait needs to work properly here
}

helpers.someMethodToTest

Look, Ma, no intermediate traits and mocking libraries needed!

I do that all the time for my traits and I've been pretty happy with the result.