public void Test_IsInFieldOfVision_MustMatch()
{
var enemy = new Infantery();
enemy.OwnerId = "2";
enemy.Position = new Vector2(500, 523);
var infantery = new Infantery();
infantery.OwnerId = "1";
infantery.Position = new Vector2(0, 0);
var barrack = new Barrack();
barrack.OwnerId = "1";
barrack.Position = new Vector2(500, 500);
Assert.False(infantery.IsInFieldOfVision(enemy.Position));
Assert.False(enemy.IsInFieldOfVision(barrack.Position));
Assert.True(barrack.IsInFieldOfVision(enemy.Position));
}