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

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

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

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

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

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

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

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