Added some nice stuff

src/test/java/NTNU/IDATT1002/service/ImageServiceTest.java

@@ -84,7 +84,8 @@ class ImageServiceTest {
    */
   @Test
   void testCreateImageReturnsEmptyOptionalWithInvalidEntity() {
-    Optional<Image> createdImage = imageService.createImage(user, null, tags);
+    Optional<Image> createdImage;
+    createdImage = imageService.createImage(user, null, tags);
     assertTrue(createdImage.isEmpty());
   }