This is a testharness.js-based test.
[FAIL] e.style['block-step-round'] = "up" should set the property value
  assert_not_equals: property should be set got disallowed value ""
[FAIL] e.style['block-step-round'] = "down" should set the property value
  assert_not_equals: property should be set got disallowed value ""
[FAIL] e.style['block-step-round'] = "nearest" should set the property value
  assert_not_equals: property should be set got disallowed value ""
Harness: the test ran to completion.