[empty-payload.https.window.html]
  expected:
    if fission and not debug and (os == "linux"): [ERROR, OK]
    if not fission: OK
    if (os == "win") and debug: ERROR
    [ERROR, OK]
  [fetchLater() does not accept empty POST request body of String in a default cross-origin iframe.]
    expected: FAIL

  [fetchLater() does not accept empty POST request body of ArrayBuffer in a default cross-origin iframe.]
    expected: FAIL

  [fetchLater() accepts a non-empty POST request body of FormData in a default cross-origin iframe.]
    expected: FAIL

  [fetchLater() does not accept empty POST request body of URLSearchParams in a default cross-origin iframe.]
    expected: FAIL

  [fetchLater() does not accept empty POST request body of Blob in a default cross-origin iframe.]
    expected: FAIL

  [fetchLater() does not accept empty POST request body of File in a default cross-origin iframe.]
    expected: FAIL