public void HiddingTest()
{
// arrange
BorderWindow Test = new BorderWindow();
Grid[] WallsFloor = new Grid[70];
Grid Wall1 = new Grid();
Wall1.Opacity = 100;
WallsFloor[50] = Wall1;
int i = 50;
double wall = 100;
// act
Test.Hidding(i);
// assert
double wall2 = WallsFloor[50].Opacity;
Assert.AreEqual(wall2, wall, "nie schowano");
}