This is a testharness.js-based test.
[FAIL] font-style: attr(data-foo type(*)) with data-foo="revert"
  assert_equals: expected "italic" but got "normal"
[FAIL] color: attr(data-foo type(*)) with data-foo="initial"
  assert_equals: expected "rgb(0, 0, 0)" but got "rgb(0, 0, 255)"
[FAIL] --x: attr(data-foo type(*)) with data-foo="inherit"
  assert_equals: expected "4px" but got "5px"
[FAIL] --y: attr(data-foo type(*)) with data-foo="initial"
  assert_equals: expected "5px" but got "4px"
[FAIL] --x: attr(data-foo type(*)) with data-foo="attr(invalid, inherit)"
  assert_equals: expected "4px" but got "5px"
[FAIL] --y: attr(data-foo type(*)) with data-foo="attr(invalid, initial)"
  assert_equals: expected "5px" but got "4px"
Harness: the test ran to completion.