Symmetry of Box's equals method

BoxTest.scala

package net.liftweb.common

import org.junit.runner.RunWith
import org.scalatest.FlatSpec
import org.scalatest.junit.JUnitRunner
import org.scalatest.matchers.ShouldMatchers

@RunWith(classOf[JUnitRunner])
class BoxTest extends FlatSpec with ShouldMatchers {
  val foo = "foo"
  val boxedFoo = Full(foo)
  
  "Box" should "be symmetric" in {
    (foo == boxedFoo) should equal (boxedFoo == foo)
  }
  
  it should "be recoverable from a collection???" in {
    val list = List(boxedFoo)
    (list contains foo) should be (true)
  }
  
  it should "be usable to recover something from a collection???" in {
    val list = List(foo)
    (list contains boxedFoo) should be (true)
  }
}