[slotted-parsing.html]
  ["::slotted(*):is(:hover)" should be a valid selector]
    expected:
      if (os == "mac") and not debug: [PASS, FAIL]

  ["::slotted(*):is(#id)" should be a valid selector]
    expected:
      if (os == "mac") and not debug: [PASS, FAIL]

  ["::slotted(*):where(:hover)" should be a valid selector]
    expected:
      if (os == "mac") and not debug: [PASS, FAIL]

  ["::slotted(*):where(#id)" should be a valid selector]
    expected:
      if (os == "mac") and not debug: [PASS, FAIL]

  ["::slotted(*):where(::before)" should be a valid selector]
    expected:
      if (os == "mac") and not debug: [PASS, FAIL]