Lambdas at Salesforce Apex

Does Apex support the lambda concept?

Ultimately, I'm trying to dry some really duplicate code in my tests, so I would like to be able to pass functions around, something like this (C # -esq)

public static TestMethod void some_test_method(){
  Arrange( ()=>
    // some setup stuff
  );
  Act( ()=>
    // test action
  );
  System.assertEquals(...);
}