import scala.tools.partest.IcodeComparison class Switches { private[this] final val ONE = 1 def switchBad(i: Byte): Int = i match { case ONE => 1 case 2 => 2 case 3 => 3 case _ => 0 } def switchOkay(i: Byte): Int = i match { case 1 => 1 case 2 => 2 case 3 => 3 case _ => 0 } } object Test extends IcodeComparison { // ensure we get two switches out of this -- ignore the rest of the output for robustness // exclude the constant we emit for the "SWITCH ..." string below (we get the icode for all the code you see in this file) override def show() = { val expected = 2 val actual = (collectIcode() filter { x => x.indexOf("SWITCH ...") >= 0 && x.indexOf("CONSTANT(") == -1 }).size assert(actual == expected) } }