Update ArrayMappedTests.java

Author: njain2208

src/test/java/com/zavtech/morpheus/array/ArrayMappedTests.java

@@ -18,6 +18,7 @@
 
 import java.time.ZoneId;
 import java.time.ZonedDateTime;
+import java.time.temporal.ChronoUnit;
 import java.util.Random;
 
 import org.testng.Assert;