1 files changed, 16 insertions, 0 deletions
diff --git a/test/scalacheck/scan.scala b/test/scalacheck/scan.scala
new file mode 100644
index 0000000000..4d2abafdef
--- /dev/null
+++ b/test/scalacheck/scan.scala
@@ -0,0 +1,16 @@
+import org.scalacheck._
+import Prop._
+import Gen._
+
+object ScanTest extends Properties("TraversableLike.scanLeft") {
+  property("scanLeft") = forAll { (xs: List[Int], z: Int) => {
+    val sums = xs.scanLeft(z)(_ + _)
+    (xs.size == 0) || sums.zip(sums.tail).map(x => x._2 - x._1) == xs
+  }}
+}
+
+
+
+
+
+