assertTrue(c.tailBody()); // read but since of EOL, buffer (no progress)
assertEquals(0, q.size()); // no events since no EOL found
assertTrue(0 != c.lastChannelSize);
assertTrue(null != c.in);
assertFalse(c.tailBody()); // try to read, but in buffer, no progress
c.flush();
assertEquals(1, q.size());
boolean append = true;