Code Golf: Only Paired Opposites

CodeGolf.PairedOpposites.cls

Class CodeGolf.PairedOpposites
{

ClassMethod Solve(opposites As %String) As %Integer
{
  Quit ""
}

}

CodeGolf.Test.PairedOpposites.cls

Class CodeGolf.Test.PairedOpposites Extends %UnitTest.TestCase
{

Method TestBasic()
{
  Do $$$AssertEquals(##class(CodeGolf.PairedOpposites).Solve("1,-1,2,-2,3"), 3)
  Do $$$AssertEquals(##class(CodeGolf.PairedOpposites).Solve("-3,1,2,3,-1,-4,-2"), -4)
  Do $$$AssertEquals(##class(CodeGolf.PairedOpposites).Solve("1,-1,2,-2,3,3"), 3)
  Do $$$AssertEquals(##class(CodeGolf.PairedOpposites).Solve("-110,110,-38,-38,-62,62,-38,-38,-38"), -38)
  Do $$$AssertEquals(##class(CodeGolf.PairedOpposites).Solve("-9,-105,-9,-9,-9,-9,105"), -9)
}

}