This is a testharness.js-based test.
[FAIL] e.style['background'] = "none" should set background-attachment
  assert_equals: background-attachment should be canonical expected "scroll" but got "initial"
[FAIL] e.style['background'] = "none" should set background-clip
  assert_equals: background-clip should be canonical expected "border-box" but got "initial"
[FAIL] e.style['background'] = "none" should set background-color
  assert_equals: background-color should be canonical expected "rgba(0, 0, 0, 0)" but got "initial"
[FAIL] e.style['background'] = "none" should set background-origin
  assert_equals: background-origin should be canonical expected "padding-box" but got "initial"
[FAIL] e.style['background'] = "none" should set background-position
  assert_equals: background-position should be canonical expected "0% 0%" but got "initial"
[FAIL] e.style['background'] = "none" should set background-repeat
  assert_equals: background-repeat should be canonical expected "repeat" but got "initial"
[FAIL] e.style['background'] = "none" should set background-size
  assert_equals: background-size should be canonical expected "auto" but got "initial"
[FAIL] e.style['background'] = "border-box content-box" should set background-attachment
  assert_equals: background-attachment should be canonical expected "scroll" but got "initial"
[FAIL] e.style['background'] = "border-box content-box" should set background-color
  assert_equals: background-color should be canonical expected "transparent" but got "initial"
[FAIL] e.style['background'] = "border-box content-box" should set background-image
  assert_equals: background-image should be canonical expected "none" but got "initial"
[FAIL] e.style['background'] = "border-box content-box" should set background-position
  assert_equals: background-position should be canonical expected "0% 0%" but got "initial"
[FAIL] e.style['background'] = "border-box content-box" should set background-repeat
  assert_equals: background-repeat should be canonical expected "repeat" but got "initial"
[FAIL] e.style['background'] = "border-box content-box" should set background-size
  assert_equals: background-size should be canonical expected "auto" but got "initial"
[FAIL] e.style['background'] = "border-area" should set background-attachment
  assert_equals: background-attachment should be canonical expected "scroll" but got "initial"
[FAIL] e.style['background'] = "border-area" should set background-color
  assert_equals: background-color should be canonical expected "transparent" but got "initial"
[FAIL] e.style['background'] = "border-area" should set background-image
  assert_equals: background-image should be canonical expected "none" but got "initial"
[FAIL] e.style['background'] = "border-area" should set background-position
  assert_equals: background-position should be canonical expected "0% 0%" but got "initial"
[FAIL] e.style['background'] = "border-area" should set background-repeat
  assert_equals: background-repeat should be canonical expected "repeat" but got "initial"
[FAIL] e.style['background'] = "border-area" should set background-size
  assert_equals: background-size should be canonical expected "auto" but got "initial"
[FAIL] e.style['background'] = "border-area text" should set background-attachment
  assert_equals: background-attachment should be canonical expected "scroll" but got "initial"
[FAIL] e.style['background'] = "border-area text" should set background-color
  assert_equals: background-color should be canonical expected "transparent" but got "initial"
[FAIL] e.style['background'] = "border-area text" should set background-image
  assert_equals: background-image should be canonical expected "none" but got "initial"
[FAIL] e.style['background'] = "border-area text" should set background-position
  assert_equals: background-position should be canonical expected "0% 0%" but got "initial"
[FAIL] e.style['background'] = "border-area text" should set background-repeat
  assert_equals: background-repeat should be canonical expected "repeat" but got "initial"
[FAIL] e.style['background'] = "border-area text" should set background-size
  assert_equals: background-size should be canonical expected "auto" but got "initial"
Harness: the test ran to completion.