[subsumption_algorithm-none.html]
  [Required policy that allows `none` does not subsume empty list of policies.]
    expected:
      if (os == "linux") and debug: ["FAIL", "PASS"]
      FAIL

  [Required csp with effective `none` does not subsume a host source expression.]
    expected:
      if debug: ["FAIL", "PASS"]
      FAIL

  [Required csp with `none` does not subsume a host source expression.]
    expected: FAIL

  [Required csp with effective `none` does not subsume `none` of another directive.]
    expected: FAIL

  [Required csp with `none` does not subsume `none` of another directive.]
    expected: FAIL

  [Required csp with `none` does not subsume `none` of different directives.]
    expected: FAIL

  [Both required and returned csp are `none` for only one directive.]
    expected: FAIL