1 files changed, 21 insertions, 0 deletions
diff --git a/test/scalacheck/list.scala b/test/scalacheck/list.scala
new file mode 100644
index 0000000000..3531f620f9
--- /dev/null
+++ b/test/scalacheck/list.scala
@@ -0,0 +1,21 @@
+import org.scalacheck._
+import Prop._
+import Gen._
+
+object ListTest extends Properties("List") {
+  def sorted(xs: List[Int]) = xs sortWith (_ < _)
+
+  property("concat size") = forAll { (l1: List[Int], l2: List[Int]) => (l1.size + l2.size) == (l1 ::: l2).size }
+  property("reverse") = forAll { (l1: List[Int]) => l1.reverse.reverse == l1 }
+  property("toSet") = forAll { (l1: List[Int]) => sorted(l1.toSet.toList) sameElements sorted(l1).distinct }
+  // property("flatten") = forAll { (xxs: List[List[Int]]) => xxs.flatten.length == (xxs map (_.length) sum) }
+  property("startsWith/take") = forAll { (xs: List[Int], count: Int) => xs startsWith (xs take count) }
+  property("endsWith/takeRight") = forAll { (xs: List[Int], count: Int) => xs endsWith (xs takeRight count) }
+  property("fill") = forAll(choose(1, 100)) { count =>
+    forAll { (x: Int) =>
+      val xs = List.fill(count)(x)
+      (xs.length == count) && (xs.distinct == List(x))
+    }
+  }
+}
+