pivotal-jbarrett commented on code in PR #7779:
URL: https://github.com/apache/geode/pull/7779#discussion_r893817487


##########
geode-core/src/integrationTest/java/org/apache/geode/cache/RegionExpirationIntegrationTest.java:
##########
@@ -84,15 +85,16 @@ public void increaseRegionTtl() throws Exception {
         .setRegionTimeToLive(new ExpirationAttributes(secondTtlSeconds, 
DESTROY));
 
     await().until(region::isDestroyed);
-    assertThat(NANOSECONDS.toSeconds(nanoTime() - startNanos))
-        .isGreaterThanOrEqualTo(secondTtlSeconds);
+    Instant endInstant = Instant.now();
+    assertThat(Duration.between(startInstant, endInstant))
+        .isGreaterThanOrEqualTo(Duration.ofSeconds(secondTtlSeconds));
   }
 
   @Test
-  public void decreaseRegionTtl() throws Exception {
+  public void decreaseRegionTtl() {
     int firstTtlSeconds = 5;

Review Comment:
   For readability I wonder if this is clearer now that we have introduced 
these new time classes:
   ```java
   final Duration firstTtl = Duration.ofSeconds(5);
   final Duration secondTtl = Duration.ofSeconds(1);
   ...
   regionFactory.setRegionTimeToLive(new 
ExpirationAttributes(firstTtl.getSeconds(), DESTROY));
   ...
   assertThat(Duration.between(startInstant, endInstant))
            .isLessThan(firstTtlSeconds);
   ```



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