This is a testharness.js-based test.
[FAIL] e.style['block-step-size'] = "1px" should set the property value
assert_not_equals: property should be set got disallowed value ""
[FAIL] e.style['block-step-size'] = "2em" should set the property value
assert_not_equals: property should be set got disallowed value ""
[FAIL] e.style['block-step-size'] = "0" should set the property value
assert_not_equals: property should be set got disallowed value ""
[FAIL] e.style['block-step-size'] = "none" should set the property value
assert_not_equals: property should be set got disallowed value ""
[FAIL] e.style['block-step-size'] = "calc(2em + 3ex)" should set the property value
assert_not_equals: property should be set got disallowed value ""
[FAIL] e.style['block-step-size'] = "1.2em" should set the property value
assert_not_equals: property should be set got disallowed value ""
Harness: the test ran to completion.