From 1d9c002a9c9632fd8219e244915763557a51ad63 Mon Sep 17 00:00:00 2001
From: Brandon Clayton <bclayton@usgs.gov>
Date: Thu, 31 Aug 2023 10:44:55 -0600
Subject: [PATCH] test latch

---
 .../gov/usgs/earthquake/nshmp/model/NshmTests.java     | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/test/java/gov/usgs/earthquake/nshmp/model/NshmTests.java b/src/test/java/gov/usgs/earthquake/nshmp/model/NshmTests.java
index 8d033a6b..be1cd6c8 100644
--- a/src/test/java/gov/usgs/earthquake/nshmp/model/NshmTests.java
+++ b/src/test/java/gov/usgs/earthquake/nshmp/model/NshmTests.java
@@ -8,6 +8,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Executors;
 import java.util.logging.Logger;
 
@@ -143,13 +144,18 @@ class NshmTests {
    * Test CONUS 2018 NSHM
    *
    * To run test: ./gradlew testConus2018
+   * @throws InterruptedException
    */
   @Test
-  final void testConus2018() throws IOException {
-    var service = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
+  final void testConus2018() throws IOException, InterruptedException {
+    var cores = Runtime.getRuntime().availableProcessors();
+    var service = Executors.newFixedThreadPool(cores);
+    CountDownLatch latch = new CountDownLatch(1);
     service.execute(() -> {
       NshmTestUtils.testNshm(NSHMS.get("nshm-conus-2018"), Optional.ofNullable(getSite()));
+      latch.countDown();
     });
+    latch.await();
   }
 
   /**
-- 
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