Make wait time seconds modifiable

src/main/java/com/amazon/sqs/javamessaging/SQSMessageConsumerPrefetch.java

@@ -54,15 +54,15 @@
  * This runs until the message consumer is closed and in-progress SQS
  * <code>receiveMessage</code> call returns.
  * <P>
- * Uses SQS <code>receiveMessage</code> with long-poll wait time of 20 seconds.
+ * Uses SQS <code>receiveMessage</code> with long-poll wait time of WAIT_TIME_SECONDS (default to 20) seconds.
  * <P>
  * Add re-tries on top of <code>SqsClient</code> re-tries on SQS calls.
  */
 public class SQSMessageConsumerPrefetch implements Runnable, PrefetchManager {
 
     private static final Logger LOG = LoggerFactory.getLogger(SQSMessageConsumerPrefetch.class);
 
-    protected static final int WAIT_TIME_SECONDS = 20;
+    protected static int WAIT_TIME_SECONDS = 20;
 
     protected static final String ALL = "All";
 

src/test/java/com/amazon/sqs/javamessaging/ModifyWaitTimeSecondsTest.java

@@ -0,0 +1,19 @@
+package com.amazon.sqs.javamessaging;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.lang.reflect.Field;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ModifyWaitTimeSecondsTest {
+    @DisplayName("Should be able to modify SQSMessageConsumerPrefetch.WAIT_TIME_SECONDS via Reflection")
+    @Test
+    void WaitTimeSecondsShouldBeModifiableViaReflection() throws NoSuchFieldException, IllegalAccessException {
+        Field wait_time_seconds = SQSMessageConsumerPrefetch.class.getDeclaredField("WAIT_TIME_SECONDS");
+        wait_time_seconds.setAccessible(true);
+        wait_time_seconds.setInt(null,5);
+        assertEquals(5,SQSMessageConsumerPrefetch.WAIT_TIME_SECONDS);
+    }
+}