This is a testharness.js-based test. [FAIL] e.style['dominant-baseline'] = "text-bottom" should set the property value assert_not_equals: property should be set got disallowed value "" [FAIL] e.style['dominant-baseline'] = "text-top" should set the property value assert_not_equals: property should be set got disallowed value "" Harness: the test ran to completion.