pkg image, const YCbCrSubsampleRatio422 = 1
pkg image, const YCbCrSubsampleRatio440 = 3
pkg image, const YCbCrSubsampleRatio440 YCbCrSubsampleRatio
pkg image, const YCbCrSubsampleRatio444 = 0
pkg image/draw, const Over = 0
pkg image/draw, const Src = 1
pkg image/jpeg, const DefaultQuality = 75
pkg io, type ByteWriter interface { WriteByte }
pkg io, type ByteWriter interface, WriteByte(uint8) error
pkg io, var ErrNoProgress error

		result := drain(input)
		if result != test.output {
			t.Errorf("%s: got %q expected %q", test.name, result, test.output)
		}
	}
}

// lines joins the arguments together as complete lines.
func lines(a ...string) string {
	return strings.Join(a, "\n") + "\n"
}

// drain returns a single string representing the processed input tokens.

pkg image, type RGBA64Image interface, RGBA64At(int, int) color.RGBA64
pkg image/draw, type RGBA64Image interface { At, Bounds, ColorModel, RGBA64At, Set, SetRGBA64 }
pkg image/draw, type RGBA64Image interface, At(int, int) color.Color
pkg image/draw, type RGBA64Image interface, Bounds() image.Rectangle
pkg image/draw, type RGBA64Image interface, ColorModel() color.Model
pkg image/draw, type RGBA64Image interface, RGBA64At(int, int) color.RGBA64

pkg image/draw, method (Op) Draw(Image, image.Rectangle, image.Image, image.Point)
pkg image/draw, type Drawer interface { Draw }
pkg image/draw, type Drawer interface, Draw(Image, image.Rectangle, image.Image, image.Point)
pkg image/draw, type Quantizer interface { Quantize }
pkg image/draw, type Quantizer interface, Quantize(color.Palette, image.Image) color.Palette
pkg image/draw, var FloydSteinberg Drawer

pkg image/color, var YCbCrModel Model
pkg image/draw, const Over Op
pkg image/draw, const Src Op
pkg image/draw, func Draw(Image, image.Rectangle, image.Image, image.Point, Op)
pkg image/draw, func DrawMask(Image, image.Rectangle, image.Image, image.Point, image.Image, image.Point, Op)
pkg image/draw, type Image interface { At, Bounds, ColorModel, Set }
pkg image/draw, type Image interface, At(int, int) color.Color