Wrote Enum for webshops

changed code in respective classes

src/test/java/de/rwu/easydrop/core/CoreTest.java

@@ -5,6 +5,8 @@ import org.junit.jupiter.api.Test;
 public class CoreTest {
     @Test
     void testRunCore() {
+        Core core1=new Core();
+        core1.runCore();
 
     }
 }