[parse-a-srcset-attribute.html]
  type: testharness
  ["data:,a 1.x"]
    expected: FAIL

  ["data:,a +1x"]
    expected: FAIL

  ["data:,a \xe2\x80\x891x" (leading U+2009)]
    expected: FAIL

  ["data:,a \xe2\x80\x8a1x" (leading U+200A)]
    expected: FAIL

  ["data:,a \xe2\x80\x8c1x" (leading U+200C)]
    expected: FAIL

  ["data:,a \xe2\x80\x8d1x" (leading U+200D)]
    expected: FAIL

