[client-initiated.cross-origin.window.html]
  [`fetch()`: No signature, valid integrity check, w/ cors: blocked.]
    expected: FAIL

  [`fetch()`: Valid signature, matching integrity check, cors: loads.]
    expected: FAIL

  [`fetch()`: Valid signature, mismatched integrity check, cors: blocked.]
    expected: FAIL

  [`fetch()`: Valid signature, one valid integrity check, cors: loads.]
    expected: FAIL

  [`fetch()`: Invalid signature, matching integrity check, cors: blocked.]
    expected: FAIL

  [`fetch()`: Invalid signature, mismatched integrity check, cors: blocked.]
    expected: FAIL

  [`fetch()`: Invalid signature, one valid integrity check, cors: loads.]
    expected: FAIL