public void TestThatPixelPerfectPenReturnsShapeWithoutLShapePixels()
{
PenTool pen = ViewModelHelper.BuildMockedTool <PenTool>();
Coordinates start = new Coordinates(0, 0);
Coordinates end = new Coordinates(0, 0);
Coordinates end2 = new Coordinates(1, 0);
Coordinates start2 = new Coordinates(1, 1);
pen.Draw(start, end, System.Windows.Media.Colors.Black, 1, true);
pen.Draw(end, end2, System.Windows.Media.Colors.Black, 1, true);
var points = pen.Draw(end2, start2, System.Windows.Media.Colors.Black, 1, true);
Assert.Contains(points.ChangedPixels, x => x.Value.A == 0);
}
