This is a testharness.js-based test.
Found 24 FAIL, 0 TIMEOUT, 0 NOTRUN.
[FAIL] HTMLElement interface: attribute headingOffset
  assert_own_property: expected property "headingOffset" missing
[FAIL] HTMLElement interface: attribute headingReset
  assert_own_property: expected property "headingReset" missing
[FAIL] HTMLBodyElement interface: attribute onpagereveal
  assert_true: The prototype object must have a property "onpagereveal" expected true got false
[FAIL] HTMLBodyElement interface: attribute onpageswap
  assert_true: The prototype object must have a property "onpageswap" expected true got false
[FAIL] HTMLBodyElement interface: document.createElement("body") must inherit property "onpagereveal" with the proper type
  assert_inherits: property "onpagereveal" not found in prototype chain
[FAIL] HTMLBodyElement interface: document.createElement("body") must inherit property "onpageswap" with the proper type
  assert_inherits: property "onpageswap" not found in prototype chain
[FAIL] HTMLImageElement interface: attribute controls
  assert_true: The prototype object must have a property "controls" expected true got false
[FAIL] HTMLImageElement interface: document.createElement("img") must inherit property "controls" with the proper type
  assert_inherits: property "controls" not found in prototype chain
[FAIL] HTMLImageElement interface: new Image() must inherit property "controls" with the proper type
  assert_inherits: property "controls" not found in prototype chain
[FAIL] HTMLMediaElement interface: document.createElement("video") must inherit property "fastSeek(double)" with the proper type
  assert_inherits: property "fastSeek" not found in prototype chain
[FAIL] HTMLMediaElement interface: calling fastSeek(double) on document.createElement("video") with too few arguments must throw TypeError
  assert_inherits: property "fastSeek" not found in prototype chain
[FAIL] HTMLMediaElement interface: document.createElement("video") must inherit property "getStartDate()" with the proper type
  assert_inherits: property "getStartDate" not found in prototype chain
[FAIL] HTMLMediaElement interface: document.createElement("audio") must inherit property "fastSeek(double)" with the proper type
  assert_inherits: property "fastSeek" not found in prototype chain
[FAIL] HTMLMediaElement interface: calling fastSeek(double) on document.createElement("audio") with too few arguments must throw TypeError
  assert_inherits: property "fastSeek" not found in prototype chain
[FAIL] HTMLMediaElement interface: document.createElement("audio") must inherit property "getStartDate()" with the proper type
  assert_inherits: property "getStartDate" not found in prototype chain
[FAIL] HTMLMediaElement interface: new Audio() must inherit property "fastSeek(double)" with the proper type
  assert_inherits: property "fastSeek" not found in prototype chain
[FAIL] HTMLMediaElement interface: calling fastSeek(double) on new Audio() with too few arguments must throw TypeError
  assert_inherits: property "fastSeek" not found in prototype chain
[FAIL] HTMLMediaElement interface: new Audio() must inherit property "getStartDate()" with the proper type
  assert_inherits: property "getStartDate" not found in prototype chain
[FAIL] HTMLMediaElement interface: operation fastSeek(double)
  assert_own_property: interface prototype object missing non-static operation expected property "fastSeek" missing
[FAIL] HTMLMediaElement interface: operation getStartDate()
  assert_own_property: interface prototype object missing non-static operation expected property "getStartDate" missing
[FAIL] HTMLFrameSetElement interface: attribute onpagereveal
  assert_true: The prototype object must have a property "onpagereveal" expected true got false
[FAIL] HTMLFrameSetElement interface: attribute onpageswap
  assert_true: The prototype object must have a property "onpageswap" expected true got false
[FAIL] HTMLFrameSetElement interface: document.createElement("frameset") must inherit property "onpagereveal" with the proper type
  assert_inherits: property "onpagereveal" not found in prototype chain
[FAIL] HTMLFrameSetElement interface: document.createElement("frameset") must inherit property "onpageswap" with the proper type
  assert_inherits: property "onpageswap" not found in prototype chain
Harness: the test ran to completion.