public void WindowsAreInListAfterCallingAddRange()
{
BaseWindow window1 = new BaseWindow();
BaseWindow window2 = new BaseWindow();
BaseWindow window3 = new BaseWindow();
BaseWindow[] windowArray = new BaseWindow[] { window1, window2, window3 };
_windowList.AddRange(windowArray);
Assert.That(_windowList, Contains.Item(window1));
Assert.That(_windowList, Contains.Item(window2));
Assert.That(_windowList, Contains.Item(window3));
}