To pass this test, the UA must render all 6 cases (SourceGraphic, SourceAlpha, BackgroundImage, BackgroundAlpha, FillPaint, StrokePaint) correctly.
The result for in="SourceGraphic" is a non blurred vertical rectangle (green with dashed stroke) overlayed with three blurred circles (red/green/blue with dashed stroke).
The result for in="SourceAlpha" is a non blurred vertical rectangle (green with dashed stroke) overlayed with three blurred circles (dark gray with dashed stroke).
The result for in="BackgroundImage" is a blurred vertical rectangle (green with dashed stroke).
The result for in="BackgroundAlpha" is blurred vertical rectangle (dark gray with dashed stroke).
The results for in="FillPaint" and in="StrokePaint" are the same. They consists of a non blurred vertical rectangle (green with dashed stroke) overlayed with a blurred gradiant (blue/white/red/yellow).
The size of the gradients are bigger than the blurred circles.