Fixed most reported issues by SonarCloud.

flux/src/main/java/com/iluwatar/flux/dispatcher/Dispatcher.java

@@ -57,15 +57,10 @@ public final class Dispatcher {
    */
   public void menuItemSelected(MenuItem menuItem) {
     dispatchAction(new MenuAction(menuItem));
-    switch (menuItem) {
-      case HOME:
-      case PRODUCTS:
-      default:
-        dispatchAction(new ContentAction(Content.PRODUCTS));
-        break;
-      case COMPANY:
-        dispatchAction(new ContentAction(Content.COMPANY));
-        break;
+    if (menuItem == MenuItem.COMPANY) {
+      dispatchAction(new ContentAction(Content.COMPANY));
+    } else {
+      dispatchAction(new ContentAction(Content.PRODUCTS));
     }
   }
 

flux/src/test/java/com/iluwatar/flux/app/AppTest.java

@@ -25,13 +25,15 @@ package com.iluwatar.flux.app;
 
 import org.junit.jupiter.api.Test;
 
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+
 /**
  * Application test
  */
-public class AppTest {
+class AppTest {
 
   @Test
-  public void test() {
-    App.main(new String[]{});
+  void shouldExecuteWithoutException() {
+    assertDoesNotThrow(() -> App.main(new String[]{}));
   }
 }