Function test_bytesiocopy_flush_propagates

tests/test_stream_lifecycle.py:175–181

``BytesIOCopy.flush()`` also flushes ``copy_to``.

()

def test_bytesiocopy_flush_propagates():
    class="st">""class="st">"``BytesIOCopy.flush()`` also flushes ``copy_to``."class="st">""
    target = io.BytesIO()
    copier = BytesIOCopy(copy_to=target)
    copier.write(bclass="st">"abc")
    copier.flush()
    assert target.getvalue() == bclass="st">"abc"


class="cm"># ---------------------------------------------------------------------------