created test for checking íf current Question variable is incremented

src/test/java/Gui/GameGuiTest.java

@@ -74,6 +74,12 @@ class GameGuiTest {
             GameGui.currentQuestion = 1;
             gameGui.createShowQuestion(1 ,file.getAbsolutePath());
             assertEquals("Frage 1: 1 Euro", GameGui.CurrentQuestionNrLabel.getText());
+    }
 	
+	@Test
+    public void testCreateShowQuestionCounter() {
+        gameGui.currentQuestion = 1;
+        gameGui.createShowQuestion(1, "QandA/Money.txt");
+        assertEquals(2, gameGui.currentQuestion);
     }
 }