[FileSystemFileHandle-writable-file-stream-lock-modes.https.tentative.worker.html]
  expected:
    if (os == "win") and debug and (processor == "x86_64"): [OK, TIMEOUT]
    if (os == "win") and not debug and (processor == "x86_64"): [OK, TIMEOUT]
    if (os == "win") and not debug and (processor == "x86"): [OK, TIMEOUT]
  [A writable stream opens in siloed mode by default]
    expected: FAIL

  [A writable stream in siloed mode has a mode property equal to siloed]
    expected: FAIL

  [When there's an open writable stream in siloed mode on a file, cannot open another writable stream in exclusive on that same file]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [FAIL, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [FAIL, NOTRUN]
      FAIL

  [After all writable streams in siloed mode on a file has been closed, can open another writable stream in exclusive on the same file]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [FAIL, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [FAIL, NOTRUN]
      FAIL

  [A writable stream in exclusive mode has a mode property equal to exclusive]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [FAIL, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [FAIL, NOTRUN]
      FAIL

  [A writable stream in exclusive mode takes a lock that is exclusive]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [FAIL, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [FAIL, NOTRUN]
      FAIL

  [When there's an open writable stream in exclusive mode on a file, cannot open another writable stream in siloed on that same file]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [FAIL, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [FAIL, NOTRUN]
      FAIL

  [After a writable stream in exclusive mode on a file has been closed, can open another writable stream in siloed on the same file]
    expected:
      if (os == "win") and debug and (processor == "x86_64"): [FAIL, TIMEOUT]
      if (os == "win") and not debug: [FAIL, TIMEOUT, NOTRUN]
      FAIL

  [When there's an open writable stream in exclusive mode on a file, can open another writable stream in exclusive on a different file]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [PASS, FAIL, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [PASS, FAIL, TIMEOUT, NOTRUN]
      if (os == "linux") and debug and not fission: [FAIL, PASS, NOTRUN]
      if (os == "android") and debug: [FAIL, PASS, NOTRUN]
      [PASS, FAIL, NOTRUN]

  [When there's an open writable stream in exclusive mode on a file, cannot open another writable stream in exclusive on that same file]
    expected:
      if (os == "win") and debug and (processor == "x86_64"): [FAIL, NOTRUN]
      if (os == "win") and not debug and (processor == "x86_64"): [FAIL, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [FAIL, NOTRUN]
      FAIL

  [After a writable stream in exclusive mode on a file has been closed, can open another writable stream in exclusive on the same file]
    expected:
      if (os == "win") and debug and (processor == "x86_64"): [FAIL, NOTRUN]
      if (os == "win") and not debug and (processor == "x86_64"): [FAIL, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [FAIL, NOTRUN]
      FAIL

  [When there's an open writable stream in exclusive mode on a file, can open another writable stream in siloed on a different file]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [PASS, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [PASS, NOTRUN]

  [When there's an open writable stream in siloed mode on a file, can open another writable stream in exclusive on a different file]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [PASS, TIMEOUT, NOTRUN]
      if (os == "win") and not debug and (processor == "x86"): [PASS, TIMEOUT]

  [When there's an open writable stream in siloed mode on a file, can open another writable stream in siloed on a different file]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [PASS, NOTRUN]

  [A writable stream in siloed mode takes a lock that is shared]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [PASS, TIMEOUT]