'Containers in one namespace are not visible in another namespace.'

def test_isolated_namespaces(self):

    client = NamespacedDockerClient(namespace=namespace_for_test(self))
    client2 = NamespacedDockerClient(namespace=namespace_for_test(self))
    name = random_name(self)
    self.addCleanup(client.remove, name)
    d = client.add(name, u'busybox:latest')
    d.addCallback((lambda _: client2.list()))
    d.addCallback(self.assertEqual, set())
    return d
