This is a testharness.js-based test.
[FAIL] 3P fetch: Cookies are not accessible via HTTP
  assert_equals: Expected cookie 1P_http to not be available expected false but got true
[FAIL] 3P fetch: Cross site window setting HTTP cookies
  assert_equals: Expected cookie 3P_http to not be available expected false but got true
[FAIL] 3P embed: Cookies are not accessible via DOM
  assert_equals: Expected cookie 1P_http to not be available expected false but got true
[FAIL] 3P embed: Cookies are not accessible via CookieStore
  assert_equals: Expected cookie 1P_http to not be available expected false but got true
[FAIL] Cross site embed setting DOM cookies
  assert_equals: Expected cookie 3P_dom to not be available expected false but got true
[FAIL] Cross site embed setting CookieStore cookies
  assert_equals: Expected cookie 3P_cs to not be available expected false but got true
Harness: the test ran to completion.