hotzen

  test("boxBlurKernel should return the correct value on an interior pixel " +
    "of a 3x3 image with radius 1") {
    val src = new Img(3, 3)
    src(0, 0) = 0; src(1, 0) = 1; src(2, 0) = 2
    src(0, 1) = 3; src(1, 1) = 4; src(2, 1) = 5
    src(0, 2) = 6; src(1, 2) = 7; src(2, 2) = 8

    def check(x: Int, y: Int, expected: Int) =
      assertResult(expected, s"boxBlurKernel($x, $y, 1)")( boxBlurKernel(src, x, y, 1) )