1 files changed, 91 insertions, 0 deletions
diff --git a/test/files/run/mutable-anyrefmap.scala b/test/files/run/mutable-anyrefmap.scala
new file mode 100644
index 0000000000..ff615d0daf
--- /dev/null
+++ b/test/files/run/mutable-anyrefmap.scala
@@ -0,0 +1,91 @@
+object Test extends App {
+
+  import scala.collection.mutable.HashMap;
+  import scala.collection.mutable.AnyRefMap;
+
+  val keys = Array(
+    null, "perch", "herring", "salmon", "pike", "cod", ""
+  )
+
+  val rn = new scala.util.Random(42L)
+  var arm = AnyRefMap.empty[String, Int]
+  val hm = HashMap.empty[String, Int]
+  
+  def checkConsistent = hm.forall{ case (k,v) => arm.get(k).exists(_ == v) }
+
+  assert {
+    (0 to 10000).forall{ i =>
+      val k = keys(rn.nextInt(keys.length))
+      if (rn.nextInt(100) < 2) arm = arm.clone()
+      if (rn.nextInt(100) < 5) arm.repack()
+      if (rn.nextBoolean) {
+        hm += ((k, i))
+        rn.nextInt(6) match {
+          case 0 => arm += ((k, i))
+          case 1 => arm += (k, i)
+          case 2 => arm(k) = i
+          case 3 => arm.put(k,i)
+          case 4 => arm ++= List((k,i))
+          case _ => if (!arm.contains(k)) arm.getOrElseUpdate(k,i) 
+                    else arm += (k,i)
+        }
+      }
+      else {
+        hm -= k
+        rn.nextInt(2) match {
+          case 0 => arm -= k
+          case _ => arm --= List(k)
+        }
+      }
+      checkConsistent
+    }
+  }
+  
+  assert {
+    val mapped = 
+      arm.map{ case (k,v) => (if (k==null) "" else k+k) -> v.toString }
+    mapped.getClass == arm.getClass
+  }
+  
+  assert {
+    val arm2 = new AnyRefMap[java.lang.Integer,Unit](2000000)
+    for (i <- 0 until 1000000) arm2(java.lang.Integer.valueOf(i)) = ()
+    
+    arm2.size == 1000000 && 
+      (0 to 1100000 by 100000).map(java.lang.Integer.valueOf).forall(i => (arm2 contains i) == i < 1000000)
+  }
+  
+  arm = AnyRefMap("heron" -> 22, "dove" -> 5, "budgie" -> 0)
+  
+  assert{
+    var s = ""
+    arm.foreachKey(s += _)
+
+    s.length == "herondovebudgie".length &&
+    s.contains("heron") &&
+    s.contains("dove") &&
+    s.contains("budgie")
+  }
+
+  assert{ var s = 0L; arm.foreachValue(s += _); s == 27L }
+
+  assert { 
+    val m2 = arm.mapValuesNow(_+2)
+    arm.transformValues(_+2)
+    m2 == arm && !(m2 eq arm) && (for ((_,v) <- arm) yield v).sum == 33L
+  }
+
+  assert {
+    val arm2 = new AnyRefMap[String, String](x => if (x==null) "null" else x)
+    arm2 += ("cod" -> "fish", "Rarity" -> "unicorn")
+    val hm2 = (new HashMap[String,String]) ++= arm2
+    
+    List(null, "cod", "sparrow", "Rarity").forall(i =>
+      arm2.get(i) == hm2.get(i) &&
+      arm2.getOrElse(i, "") == hm2.getOrElse(i, "") &&
+      arm2(i) == hm2.get(i).getOrElse(if (i==null) "null" else i.toString) &&
+      arm2.getOrNull(i) == hm2.get(i).orNull
+    )
+  }
+}
+