test_nbd.py 文件源码

def test_get_dev_timeout(self):
        # Always fail to get a device
        def fake_get_dev_fails(self):
            return False
        self.stubs.Set(nbd.NbdMount, '_inner_get_dev', fake_get_dev_fails)

        tempdir = self.useFixture(fixtures.TempDir()).path
        n = nbd.NbdMount(self.file, tempdir)
        self.useFixture(fixtures.MonkeyPatch('random.shuffle', _fake_noop))
        self.useFixture(fixtures.MonkeyPatch('time.sleep', _fake_noop))
        self.useFixture(fixtures.MonkeyPatch('nova.utils.execute', _fake_noop))
        self.useFixture(fixtures.MonkeyPatch('os.path.exists',
                                             self.fake_exists_one))
        self.useFixture(fixtures.MonkeyPatch('nova.utils.trycmd',
                                             self.fake_trycmd_creates_pid))
        self.useFixture(fixtures.MonkeyPatch(('nova.virt.disk.mount.api.'
                                              'MAX_DEVICE_WAIT'), -10))

        # No error logged, device consumed
        self.assertFalse(n.get_dev())