Add missing files.

1 files changed, 43 insertions, 0 deletions

diff --git a/vespajlib/src/test/java/com/yahoo/concurrent/CachedThreadPoolWithFallbackTest.java b/vespajlib/src/test/java/com/yahoo/concurrent/CachedThreadPoolWithFallbackTest.java
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index 00000000000..52e17631a34
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+++ b/vespajlib/src/test/java/com/yahoo/concurrent/CachedThreadPoolWithFallbackTest.java
@@ -0,0 +1,43 @@
+// Copyright 2020 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+package com.yahoo.concurrent;
+
+import org.junit.Test;
+
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+
+import static org.junit.Assert.assertEquals;
+
+public class CachedThreadPoolWithFallbackTest {
+    private static void countAndBlock(AtomicLong counter, long waitLimit) {
+        counter.incrementAndGet();
+        try {
+            synchronized (counter) {
+                while (counter.get() < waitLimit) {
+                    counter.wait();
+                }
+            }
+        } catch (InterruptedException e) {}
+    }
+
+    @Test
+    public void testThatTaskAreQueued() throws InterruptedException {
+        CachedThreadPoolWithFallback executor = new CachedThreadPoolWithFallback("test", 1, 30, 1, TimeUnit.SECONDS);
+        AtomicLong counter = new AtomicLong(0);
+        for (int i = 0; i < 1000; i++) {
+            executor.execute(() -> countAndBlock(counter, 100));
+        }
+        while (counter.get() < 30) {
+            Thread.sleep(1);
+        }
+        Thread.sleep(1);
+        assertEquals(30L, counter.get());
+        counter.set(100);
+        synchronized (counter) {
+            counter.notifyAll();
+        }
+        executor.close();
+        assertEquals(1070L, counter.get());
+    }
+}