Legger til manglende sjekking av retning for en vegg som instansieres

Legger til en test som sjekker at en exception blir kastet når en ugyldig vegg blir forsøkt instansiert
Legger til en test som sjekker at en exception blir kastet når en ugyldig tile blir forsøkt instansiert

src/main/java/inf112/fiasko/roborally/objects/Wall.java

@@ -17,6 +17,9 @@ public class Wall {
      * @param direction The direction of the wall
      */
     public Wall (WallType wallType, Direction direction) {
+        if (direction.getDirectionID() % 2 == 0 && wallType != WallType.WALL_CORNER) {
+            throw new IllegalArgumentException("Invalid direction for wall type submitted");
+        }
         this.wallType = wallType;
         this.direction = direction;
     }

src/test/java/inf112/fiasko/roborally/element_properties/TileTypeTest.java

@@ -1,5 +1,6 @@
 package inf112.fiasko.roborally.element_properties;
 
+import inf112.fiasko.roborally.objects.Tile;
 import org.junit.Test;
 
 import java.util.ArrayList;
@@ -44,6 +45,11 @@ public class TileTypeTest {
         assertNull(TileType.getTileTypeFromID(-1));
     }
 
+    @Test (expected = IllegalArgumentException.class)
+    public void invalidTileDirectionThrowsError() {
+        new Tile(TileType.TILE, Direction.NORTH_EAST);
+    }
+
     @Test
     public void allTilesHaveUniqueId() {
         /* This test is also done implicitly by the allTileTypesIDConversionToIDAndBack test, but that test may fail

src/test/java/inf112/fiasko/roborally/element_properties/WallTypeTest.java

@@ -1,5 +1,6 @@
 package inf112.fiasko.roborally.element_properties;
 
+import inf112.fiasko.roborally.objects.Wall;
 import org.junit.Test;
 
 import java.util.ArrayList;
@@ -44,6 +45,11 @@ public class WallTypeTest {
         assertNull(TileType.getTileTypeFromID(-1));
     }
 
+    @Test (expected = IllegalArgumentException.class)
+    public void invalidWallDirectionThrowsError() {
+        new Wall(WallType.WALL_NORMAL, Direction.NORTH_EAST);
+    }
+
     @Test
     public void allWallsHaveUniqueId() {
         /* This test is also done implicitly by the allTileTypesIDConversionToIDAndBack test, but that test may fail