Allow null Application config

tests/runtime/test/lime/WindowTest.hx

@@ -1,12 +1,17 @@
 package lime;
 
 
+import lime.app.Application;
+import lime.ui.Window;
 import massive.munit.Assert;
 
 
 class WindowTest {
 	
 	
+	private var app:Application;
+	
+	
 	public function new () {
 		
 		
@@ -14,9 +19,39 @@ class WindowTest {
 	}
 	
 	
-	@Test public function todo ():Void {
+	@BeforeClass public function beforeClass ():Void {
 		
-		Assert.isTrue(true);
+		app = new Application ();
+		app.create (null);
+		
+	}
+	
+	
+	@Test public function addWindow ():Void {
+		
+		Assert.isNull (app.window);
+		Assert.areEqual (0, app.windows.length);
+		
+		var window = new Window ();
+		app.addWindow (window);
+		
+		Assert.isNotNull (app.window);
+		Assert.areEqual (1, app.windows.length);
+		Assert.areEqual (window, app.window);
+		Assert.areEqual (window, app.windows[0]);
+		
+		//Assert.areEqual (0, window.width);
+		//Assert.areEqual (0, window.height);
+		
+	}
+	
+	
+	@AfterClass public function afterClass ():Void {
+		
+		// shutdown
+		
+		//app = new Application ();
+		//app.create (null);
 		
 	}