Added scala.collection.convert.WrapperProperties

Author: joshlemer

test/scalacheck/scala/collection/convert/WrapperProperties.scala

@@ -0,0 +1,24 @@
+
+package scala.collection.convert
+
+import org.scalacheck.{Properties, Test}
+import org.scalacheck.Prop._
+
+import scala.collection.immutable
+
+
+object WrapperProperties extends Properties("Wrappers") {
+
+  override def overrideParameters(p: Test.Parameters): Test.Parameters = p.withInitialSeed(42L)
+
+  property("JSetWrapper#filterInPlace(p)") = forAll { (hs: immutable.HashSet[Int], p: Int => Boolean) =>
+    val expected: collection.Set[Int] = hs.filter(p)
+    val actual: collection.Set[Int] = {
+      val jset = new java.util.HashSet[Int]()
+      hs.foreach(jset.add)
+      Wrappers.JSetWrapper(jset)
+    }.filterInPlace(p)
+    actual ?= expected
+  }
+
+}