[headers-basic.html]
  type: testharness
  [Check keys method]
    expected: FAIL

  [Check values method]
    expected: FAIL

  [Check entries method]
    expected: FAIL

  [Check Symbol.iterator method]
    expected: FAIL

  [Check forEach method]
    expected: FAIL

  [Create headers with existing headers with custom iterator]
    expected: FAIL

