[issue24004] avoid explicit generator type check in asyncio

[Martin Panter]

Martin Panter added the comment:

Yury, your last change causes DeprecationWarning:

[ 38/398] test_asyncio
/media/disk/home/proj/python/cpython/Lib/test/test_asyncio/test_pep492.py:119: DeprecationWarning: Please use assertEqual instead.
  self.assertEquals(coro.send(None), 'spam')

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nosy: +vadmium

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<http://bugs.python.org/issue24004>
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