Updating tests

Author: LikeTheSalad

opamp-client/src/main/java/io/opentelemetry/opamp/client/internal/request/delay/PeriodicTaskExecutor.java

@@ -30,7 +30,7 @@ public static PeriodicTaskExecutor create(PeriodicDelay initialPeriodicDelay) {
         initialPeriodicDelay);
   }
 
-  PeriodicTaskExecutor(
+  public PeriodicTaskExecutor(
       ScheduledExecutorService executorService, PeriodicDelay initialPeriodicDelay) {
     this.executorService = executorService;
     this.periodicDelay = initialPeriodicDelay;
@@ -52,7 +52,6 @@ public void setPeriodicDelay(PeriodicDelay periodicDelay) {
         scheduledFuture.cancel(false);
       }
       this.periodicDelay = periodicDelay;
-      periodicDelay.reset();
       scheduleNext();
     } finally {
       delaySetLock.unlock();

opamp-client/src/main/java/io/opentelemetry/opamp/client/internal/request/service/HttpRequestService.java

@@ -102,13 +102,13 @@ public void start(Callback callback, Supplier<Request> requestSupplier) {
   public void stop() {
     if (isRunning.compareAndSet(true, false)) {
       hasStopped.set(true);
-      executor.executeNow();
       executor.stop();
     }
   }
 
   private void enableRetryMode(@Nullable Duration suggestedDelay) {
     if (retryModeEnabled.compareAndSet(false, true)) {
+      periodicRetryDelay.reset();
       if (suggestedDelay != null && periodicRetryDelay instanceof AcceptsDelaySuggestion) {
         ((AcceptsDelaySuggestion) periodicRetryDelay).suggestDelay(suggestedDelay);
       }
@@ -118,6 +118,7 @@ private void enableRetryMode(@Nullable Duration suggestedDelay) {
 
   private void disableRetryMode() {
     if (retryModeEnabled.compareAndSet(true, false)) {
+      periodicRequestDelay.reset();
       executor.setPeriodicDelay(periodicRequestDelay);
     }
   }