import java.io._
import collection._



object Test {
  
  def serializeDeserialize[T <: AnyRef](obj: T) = {
    val buffer = new ByteArrayOutputStream
    val out = new ObjectOutputStream(buffer)
    out.writeObject(obj)
    val in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray))
    in.readObject.asInstanceOf[T]
  }
  
  def main(args: Array[String]) {
    val values = mutable.Map(1 -> 1).values
    assert(serializeDeserialize(values) == values)
    
    val keyset = mutable.Map(1 -> 1).keySet
    assert(serializeDeserialize(keyset) == keyset)
    
    val imkeyset = immutable.Map(1 -> 1).keySet
    assert(serializeDeserialize(imkeyset) == imkeyset)
    
    val defaultmap = immutable.Map(1 -> 1).withDefaultValue(1)
    assert(serializeDeserialize(defaultmap) == defaultmap)
  }
  
}