Method test_wait4

Lib/test/_test_eintr.py:123–124

(self)

    @unittest.skipUnless(hasattr(os, 'wait4'), 'requires wait4()')
    def test_wait4(self):
        self._test_wait_single(lambda pid: os.wait4(pid, 0))

    def _interrupted_reads(self):
        """Make a fd which will force block on read of expected bytes."""