added small improvements in GameTest

src/test/java/ch/zhaw/pm2/racetrack/GameTest.java

@@ -29,6 +29,9 @@ class GameTest {
     @DisplayName("Test correct Setup")
     class Setup {
 
+        /**
+         * Sets up getting the Config, Game and Userinterface for the following tests.
+         */
         @BeforeEach
         void setup() {
             userInterface = new UserInterface("Test");
@@ -139,6 +142,9 @@ class GameTest {
             Assertions.assertEquals(new PositionVector(1, 0), game.getCarVelocity(0));
         }
 
+        /**
+         *  Checks if car crash is set if a car crashes.
+         */
         @Test
         void carCrash() {
             game.doCarTurn(PositionVector.Direction.UP);
@@ -256,6 +262,7 @@ class GameTest {
             this.directions = directions;
         }
 
+
         @Override
         public int selectOption(String text, List<String> options) {
             pointerInstruction++;
@@ -263,6 +270,7 @@ class GameTest {
 
         }
 
+
         public void printInformation(String text) {
         }