it("Should show repeating linear gradient preview", function () {
                runs(function () {
                    checkGradientAtPos("repeating-linear-gradient(red, blue 50%, red 100%)", 122, 50);
                    checkGradientAtPos("repeating-linear-gradient(red 0%, white 0%, blue 0%)", 123, 50);
                    checkGradientAtPos("repeating-linear-gradient(red 0%, white 50%, blue 100%)", 124, 50);