Update serialization format in a separate thread

1 files changed, 25 insertions, 0 deletions

diff --git a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/concurrent/OnceTest.java b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/concurrent/OnceTest.java
new file mode 100644
index 00000000000..e11fdcba7c6
--- /dev/null
+++ b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/concurrent/OnceTest.java
@@ -0,0 +1,25 @@
+// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.vespa.hosted.controller.concurrent;
+
+import org.junit.Test;
+
+import java.time.Duration;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.Assert.assertTrue;
+
+/**
+ * @author mpolden
+ */
+public class OnceTest {
+
+    @Test(timeout = 60_000)
+    public void test_run() throws Exception {
+        CountDownLatch latch = new CountDownLatch(1);
+        Once.after(Duration.ZERO, latch::countDown);
+
+        assertTrue(latch.await(30, TimeUnit.SECONDS));
+    }
+
+}