This is a testharness.js-based test.
FAIL e.style['text-decoration-width'] = "auto" should set the property value assert_not_equals: property should be set got disallowed value ""
FAIL e.style['text-decoration-width'] = "from-font" should set the property value assert_not_equals: property should be set got disallowed value ""
FAIL e.style['text-decoration-width'] = "-10px" should set the property value assert_not_equals: property should be set got disallowed value ""
FAIL e.style['text-decoration-width'] = "2001em" should set the property value assert_not_equals: property should be set got disallowed value ""
FAIL e.style['text-decoration-width'] = "-49em" should set the property value assert_not_equals: property should be set got disallowed value ""
FAIL e.style['text-decoration-width'] = "53px" should set the property value assert_not_equals: property should be set got disallowed value ""
FAIL e.style['text-decoration-width'] = "calc(40em - 10px)" should set the property value assert_not_equals: property should be set got disallowed value ""
FAIL e.style['text-decoration-width'] = "calc(-50em + 13px)" should set the property value assert_not_equals: property should be set got disallowed value ""
Harness: the test ran to completion.