[test]: fix the flaky test whenItemsExceedMaxBatchSize_flushingQueueSplitsIntoBatches (#198)

* fix flake test whenItemsExceedMaxBatchSize_flushingQueueSplitsIntoBatches

* fix flaky testManyAsyncStepsExample

Author: zhongkechen

examples/src/test/java/software/amazon/lambda/durable/examples/CloudBasedIntegrationTest.java

@@ -466,7 +466,7 @@ void testChildContextExample() {
     }
 
     @ParameterizedTest
-    @CsvSource({"100, 1000, 10", "500, 2000, 20", "1000, 3000, 30"})
+    @CsvSource({"100, 1000, 10", "500, 2000, 20", "1000, 3000, 50"})
     void testManyAsyncStepsExample(int steps, long maxExecutionTime, long maxReplayTime) {
         long minimalExecutionTimeMs = Long.MAX_VALUE;
         long minimalReplayTimeMs = Long.MAX_VALUE;

sdk/src/test/java/software/amazon/lambda/durable/execution/ApiRequestDelayedBatcherTest.java

@@ -25,7 +25,7 @@
 import org.junit.jupiter.api.Test;
 
 class ApiRequestDelayedBatcherTest {
-    private static final Duration SHORT_DELAY = Duration.ofMillis(1);
+    private static final Duration SHORT_DELAY = Duration.ofMillis(5);
     private static final Duration LONG_DELAY = Duration.ofMillis(100);
     private static final int MAX_BATCH_SIZE = 3;
     private static final int MAX_BATCH_BINARY_SIZE_IN_BYTES = 200;