Additional test coverage

src/test/kotlin/TilePropertiesTest.kt

@@ -0,0 +1,42 @@
+import technology.zim.data.Directions
+import technology.zim.data.Directions.*
+import technology.zim.data.TileProperties
+import kotlin.test.Test
+
+class TilePropertiesTest {
+
+    @Test
+    fun addConnectionsTest() {
+        val tileProperties = TileProperties(0)
+        var result = tileProperties + UP
+
+        assert(result.connections and(UP.dir) == UP.dir)
+        assert(result.connections and(DOWN.dir) == 0)
+
+        result += LEFT
+
+        assert(result.connections and(UP.dir) == UP.dir)
+        assert(result.connections and(LEFT.dir) == LEFT.dir)
+        assert(result.connections and(RIGHT.dir) == 0)
+        assert(result.connections and(DOWN.dir) == 0)
+
+        val after = result + UP
+
+        assert(result == after)
+    }
+
+    @Test
+    fun removeConnectionsTest() {
+        val props = TileProperties(UP.dir + LEFT.dir + RIGHT.dir + DOWN.dir)
+        var result = props - UP
+
+        assert(result.connections and (UP.dir) == 0)
+        assert(result.connections and (LEFT.dir) == LEFT.dir)
+        assert(result.connections and (RIGHT.dir) == RIGHT.dir)
+        assert(result.connections and (DOWN.dir) == DOWN.dir)
+
+        val after = result - UP
+        assert(result == after)
+    }
+
+}

src/test/kotlin/WorldTest.kt

@@ -0,0 +1,29 @@
+import technology.zim.World
+import technology.zim.data.Directions
+import technology.zim.data.Tile
+import technology.zim.data.TileProperties
+import kotlin.test.*
+
+class WorldTest {
+    @BeforeTest
+    fun setUp() {
+        World.setSize(10, 10)
+    }
+
+    @Test
+    fun updateTileTest() {
+        val t = Tile(1, 1)
+        val tu = t + Directions.UP
+        assert(World.get(t).connections == 0)
+
+        World.update(t, TileProperties(Directions.UP.dir))
+        World.update(tu, TileProperties(Directions.DOWN.dir))
+
+        assert(World.get(t).connections == Directions.UP.dir)
+        assert(World.get(tu).connections == Directions.DOWN.dir)
+
+
+    }
+
+
+}