[select-an-image-source.html]
  type: testharness
  ["data:,a 1x, data:,b 1x"]
    expected: FAIL

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

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

  ["data:,a 1w, data:,b 1w"]
    expected: FAIL

  ["data:,a 1w 1h, data:,b 1w"]
    expected: FAIL

  ["data:,a 1w, data:,b 1w 1h"]
    expected: FAIL

  ["data:,a 1w 1h, data:,b 1w 2h"]
    expected: FAIL

  ["data:,a 1w 2h, data:,b 1w 1h"]
    expected: FAIL

  ["data:,a , data:,b"]
    expected: FAIL

  ["data:,a 1w, data:,b 1x" sizes="1px"]
    expected: FAIL

  ["data:,a 1x, data:,b 1w" sizes="1px"]
    expected: FAIL

  ["data:,a 1w, data:,b 2x" sizes="0.5px"]
    expected: FAIL

  ["data:,a 2x, data:,b 1w" sizes="0.5px"]
    expected: FAIL