public void Setups_up_fill_and_outline_in_ctor()
 {
     LineResultMarker marker = new StubTestLineResultMarker(Colors.Black);
     Assert.NotNull(marker.Fill);
     Assert.NotNull(marker.Outline);
 }
 public void Fill_and_outline_should_be_frozen()
 {
     LineResultMarker marker = new StubTestLineResultMarker(Colors.Black);
     Assert.True(marker.Fill.IsFrozen);
     Assert.True(marker.Outline.IsFrozen);
 }