From b31098caac2aa63e8f87720956ead0bb774e2799 Mon Sep 17 00:00:00 2001
From: Jason Zaugg <jzaugg@gmail.com>
Date: Tue, 31 Mar 2015 09:35:11 +1000
Subject: SI-8689 Make a Future test case determistic

As discussed:

  https://groups.google.com/forum/#!topic/scala-internals/m8I_3GQR4vQ

We need to ensure a happens-before relationship between the callback
that prints "success" and the end of the main method.
---
 test/files/jvm/t8689.scala | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'test')

diff --git a/test/files/jvm/t8689.scala b/test/files/jvm/t8689.scala
index ef43a1df63..3ee20d711a 100644
--- a/test/files/jvm/t8689.scala
+++ b/test/files/jvm/t8689.scala
@@ -4,10 +4,15 @@ object Test {
     import ExecutionContext.Implicits.global
     val source1 = Promise[Int]()
     val source2 = Promise[Int]()
+    val done = Promise[Unit]()
     source2.completeWith(source1.future).future.onComplete {
-      case _ => print("success")
+      case _ =>
+         print("success")
+         done.success(())
     }
     source2.tryFailure(new TimeoutException)
     source1.success(123)
+    import duration._
+    Await.result(done.future, 120.seconds)
   }
-}
\ No newline at end of file
+}
-- 
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