Tests for twisted.internet.fdesc.
| Class | NonBlockingTests | Tests for fdesc.setNonBlocking
and fdesc.setBlocking. |
| Class | ReadWriteTests | Tests for fdesc.readFromFD,
fdesc.writeToFD. |
| Class | CloseOnExecTests | Tests for fdesc._setCloseOnExec
and fdesc._unsetCloseOnExec. |