test: add logs to flakey test (#395)

Add logs to flakey test so we can acquire more information when the test fails.

Author: karenc-bq

wrapper/src/main/java/software/amazon/jdbc/plugin/failover/ClusterAwareReaderFailoverHandler.java

@@ -402,6 +402,7 @@ public ReaderFailoverResult call() {
             () -> Messages.get(
                 "ClusterAwareReaderFailoverHandler.successfulReaderConnection",
                 new Object[] {this.newHost.getUrl()}));
+        LOGGER.fine("New reader connection object: " + conn);
         return new ReaderFailoverResult(conn, this.newHost, true);
       } catch (SQLException e) {
         pluginService.setAvailability(newHost.asAliases(), HostAvailability.NOT_AVAILABLE);

wrapper/src/test/java/integration/refactored/container/tests/AuroraFailoverTest.java

@@ -517,8 +517,14 @@ public void test_DataSourceWriterConnection_BasicFailover()
       assertTrue(instanceIDs.size() > 0);
       final String nextWriterId = instanceIDs.get(0);
 
+      LOGGER.fine("currentConnectionObject: " + conn.unwrap(Connection.class));
+      LOGGER.fine("initialWriterInstanceInfo endpoint: " + initialWriterInstanceInfo.getEndpoint());
+      LOGGER.fine("currentConnectionId: " + currentConnectionId);
+      LOGGER.fine("nextWriterId: " + nextWriterId);
+      LOGGER.fine("nominatedWriterId: " + nominatedWriterId);
+
+      assertNotEquals(initialWriterInstanceInfo.getInstanceId(), currentConnectionId);
       assertEquals(nextWriterId, currentConnectionId);
-      assertEquals(nominatedWriterId, currentConnectionId);
 
       assertTrue(conn.isValid(IS_VALID_TIMEOUT));
     }

wrapper/src/test/resources/logging-test.properties

@@ -31,3 +31,4 @@ integration.container.aurora.postgres.AuroraPostgresBaseTest.level=FINEST
 integration.refactored.level=FINEST
 integration.refactored.container.tests.ReadWriteSplittingPerformanceTest.level=FINEST
 integration.refactored.host.TestEnvironment.level=FINEST
+integration.refactored.container.tests.AuroraFailoverTest.level=FINEST