Legger til en TileType enum og tester

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

@@ -0,0 +1,36 @@
+package inf112.fiasko.roborally;
+
+import inf112.fiasko.roborally.abstractions.TileType;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+public class TileTypeTest {
+    @Test
+    public void getTileTypeIDForHole() {
+        assertEquals(2, TileType.HOLE.getTileTypeID());
+    }
+    @Test
+    public void getTileTypeFromHoleID() {
+        assertEquals(TileType.HOLE, TileType.getTileTypeFromID(2));
+    }
+    @Test
+    public void getTileTypeIDForWrench() {
+        assertEquals(21, TileType.WRENCH.getTileTypeID());
+    }
+    @Test
+    public void getTileTypeFromWrenchID() {
+        assertEquals(TileType.WRENCH, TileType.getTileTypeFromID(21));
+    }
+    @Test
+    public void allTileTypesIDConversionToIDAndBack() {
+        for (TileType type : TileType.values()) {
+            assertEquals(type, TileType.getTileTypeFromID(type.getTileTypeID()));
+        }
+    }
+    @Test
+    public void invalidTileTypeIDReturnsNull() {
+        assertNull(TileType.getTileTypeFromID(-1));
+    }
+}