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