[audiochannelmerger-basic.html]
  [< [exceptions-channels\] 4 out of 4 assertions were failed.]
    expected: FAIL

  [X context.createChannelMerger(33) threw "TypeError" instead of IndexSizeError.]
    expected: FAIL

  [X context.createChannelMerger(0) threw "TypeError" instead of IndexSizeError.]
    expected: FAIL

  [X context.createChannelMerger(32) incorrectly threw TypeError: "context.createChannelMerger is not a function".]
    expected: FAIL

  [X context.createChannelMerger() incorrectly threw TypeError: "context.createChannelMerger is not a function".]
    expected: FAIL