flaky fixes

[njain2208]

PR Overview:

---

This PR fixes the flaky/non-deterministic behavior of the following test because it assumes the ordering.

com.zavtech.morpheus.array.ArrayMappedTests#testZonedDateTime

com.zavtech.morpheus.array.ArrayBuilderTests#testWithLocalDateTimes

com.zavtech.morpheus.array.ArrayBuilderTests#testWithZonedDateTimes

com.zavtech.morpheus.array.ArraysBasicTests#testFill

com.zavtech.morpheus.array.ArraysBasicTests#testFirstAndLast

com.zavtech.morpheus.array.ArraysBasicTests#testLocalDateTimeArray

com.zavtech.morpheus.array.ArraysBasicTests#testZonedDateTimeArray

Test Overview:

---

In the above tests, the error originates from the implementation of the underlying map, specifically within the MappedArrayOfZonedDateTimes class. Within this class, the utilization of Instant.ofEpochMilli(value) is employed to handle milliseconds and nanoseconds. However, it is important to note that this method is flaky in nature and sometimes it accommodates both milliseconds and nanoseconds, while sometimes discarding the nanoseconds information. Consequently, this discrepancy in handling leads to differences in values, exemplified by instances such as [2023-11-20T17:01:38.907444-06:00[America/Chicago]] and [2023-11-20T17:01:38.907-06:00[America/Chicago]].

This flakiness was identified by the nondex tool created by the researchers of UIUC.

[ERROR] testZonedDateTimeArray(com.zavtech.morpheus.array.ArraysBasicTests)  Time elapsed: 0.007 s  <<< FAILURE!
java.lang.AssertionError: Values match at 0 expected [2023-11-20T22:56:38.784+01:00[Africa/Luanda]] but found [2023-11-20T22:56:38.784642+01:00[Africa/Luanda]]
[ERROR] testLocalDateTimeArray(com.zavtech.morpheus.array.ArraysBasicTests)  Time elapsed: 0.003 s  <<< FAILURE! java.lang.AssertionError: Values match at 0 expected [2023-11-20T16:34:37.544] but found [2023-11-20T16:34:37.544299]
[ERROR] testWithLocalDateTimes(com.zavtech.morpheus.array.ArrayBuilderTests)  Time elapsed: 0.002 s  <<< FAILURE!
java.lang.AssertionError: The values match at 0 expected [2023-11-20T17:01:38.886042] but found [2023-11-20T17:01:38.886]
[ERROR] testWithMixedTypes(com.zavtech.morpheus.array.ArrayBuilderTests)  Time elapsed: 0.001 s  <<< FAILURE!
java.lang.AssertionError: The values match at 0 expected [2023-11-20T17:01:38.907444-06:00[America/Chicago]] but found [2023-11-20T17:01:38.907-06:00[America/Chicago]]
[ERROR] testFirstAndLast(com.zavtech.morpheus.array.ArraysBasicTests)  Time elapsed: 0.003 s  <<< FAILURE!
java.lang.AssertionError: First value matches expected [2023-11-20T17:01:37.470669-06:00[America/Chicago]] but found [2023-11-20T17:01:37.470-06:00[America/Chicago]]
testFill(com.zavtech.morpheus.array.ArraysBasicTests)  Time elapsed: 0.004 s  <<< FAILURE!
java.lang.AssertionError: Values match at 0 expected [2023-11-20T17:01:37.202986-06:00[America/Chicago]] but found [2023-11-20T17:01:37.202-06:00[America/Chicago]]

You can reproduce the issue by running the following commands (and substituting the test with the test you want to check):

mvn install -pl . -am -DskipTests
mvn test -pl .  -Dtest=com.zavtech.morpheus.array.ArraysBasicTests#testFirstAndLast
mvn -pl . edu.illinois:index-maven-plugin:2.1.1:nondex -Dtest=com.zavtech.morpheus.array.ArraysBasicTests#testFirstAndLast

Fix:

---

In order to fix this test error I have truncated the current ZonedDateTime to milliseconds precision so that the test can pass.

https://github.com/njain2208/morpheus-core/blob/bc7acf1bf6b020a69f1106e38646d018d1b6bb99/src/test/java/com/zavtech/morpheus/array/ArrayMappedTests.java#L95-L98