[audiobuffersource-playbackrate-negative.html]
  [AudioBufferSourceNode supports negative playbackRate (-1.0)]
    expected: FAIL

  [AudioBufferSourceNode supports high negative playbackRate (-2.0)]
    expected: FAIL

  [AudioBufferSourceNode supports high negative playbackRate (-5.0)]
    expected: FAIL

  [AudioBufferSourceNode supports fractional negative playbackRate]
    expected: FAIL

  [AudioBufferSourceNode supports very low negative playbackRate (-0.02)]
    expected: FAIL

  [AudioBufferSourceNode enters loop backwards from offset > loopEnd]
    expected: FAIL

  [AudioBufferSourceNode clamps offset to loopStart for playbackRate < 0]
    expected: FAIL

  [AudioBufferSourceNode handles offset exactly at duration with negative rate]
    expected: FAIL

  [AudioBufferSourceNode handles out-of-bounds start offset correctly]
    expected: FAIL

  [AudioBufferSourceNode performs sub-sample interpolation backwards]
    expected: FAIL