CODEWITHSUNDEEP
scalarefactoringprogram-entry-point
Janek Bogucki
Janek Bogucki

Reputation: 5123

How to factor out main method of Scala objects into a shared location?

In several Scala objects I have defined a main method that invokes runTests which is an abstract method in Test. Is there a way for the main method to be factored out into a common location (Trait or other solution) so that I can still run the test in Eclipse by keying ctrl-F11?

This is what I have at present,

https://github.com/janekdb/stair-chess/blob/master/src/chess/model/BoardModelTest.scala

object BoardModelTest extends Test with TestUtils {

  def main(args: Array[String]) {
    runTests
  }

  def runTests {
  ...

https://github.com/janekdb/stair-chess/blob/master/src/test/Test.scala

trait Test {

  def runTests: Unit
  ...

Upvotes: 3

Views: 154

Answers (1)

Luigi Plinge
Luigi Plinge

Reputation: 51109

I don't have Eclipse on this computer so I can't test if it works with Ctrl+F11, but I think you want a self-type:

trait Main {
  self: Test => 
  def main(args: Array[String]) {
    runTests
  }
}

You then just mix it in after your Test trait:

object BoardModelTest extends Test with TestUtils with Main {
  def runTests {}
}

Upvotes: 8

Related Questions