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object SetBug {
import scala.collection.immutable.{ Set => ImmutSet }
import scala.collection.mutable.{ Set => MutSet }
case class IH (i: Int, h: Int) {
override def hashCode: Int = h
}
def run(): Unit = {
var is = ImmutSet.empty[IH]
var ms = MutSet.empty[IH]
for (ih <- List(IH(2,0),IH(0,0),IH(4,4),IH(6,4),IH(-8,1520786080))) {
is = is + ih
ms = ms + ih
}
assert(is == ms)
val x = IH(6,4)
is = is - x
ms = ms - x
assert(is == ms)
}
}
object MapBug {
import scala.collection.immutable.{ Map => ImmutMap }
import scala.collection.mutable.{ Map => MutMap }
case class IH (i: Int, h: Int) {
override def hashCode: Int = h
}
def run(): Unit = {
var im = ImmutMap.empty[IH,IH]
var mm = MutMap.empty[IH,IH]
for (ih <- List(IH(2,0),IH(0,0),IH(4,4),IH(6,4),IH(-8,1520786080))) {
im = im + ((ih,ih))
mm = mm + ((ih,ih))
}
assert(im == mm)
val x = IH(6,4)
im = im - x
mm = mm - x
assert(im == mm)
}
}
object Test {
def main(args: Array[String]): Unit = {
SetBug.run()
MapBug.run()
}
}
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