human
I wrote the below code

    class Tests(AsyncTestCase, ):
        def setUp(self):
            super(Tests, self).setUp()
            self.api = blockdevice_api_factory(test_case=self)
            self.this_node = self.api.compute_instance_id()
            self.async_cloud_api = _SyncToThreadedAsyncCloudAPIAdapter(_reactor=reactor, _sync=self.api, _threadpool=reactor.getThreadPool())
        def test_interface(self):
            '\n                                                The    result    of    the    factory    provides    ``ICloudAPI``.\n                                                '
            self.assertTrue(verifyObject(ICloudAPI, self.api))
        def test_current_machine_is_live(self):
            '\n                                                The    machine    running    the    test    is    reported    as    alive.\n                                                '
            d = self.async_cloud_api.list_live_nodes()
            d.addCallback((lambda live: self.assertIn(self.api.compute_instance_id(), live)))
            return d
        def test_list_live_nodes(self):
            '\n                                                ``list_live_nodes``    returns    an    iterable    of    unicode    values.\n                                                '
            live_nodes = self.api.list_live_nodes()
            self.assertThat(live_nodes, AllMatch(IsInstance(unicode)))
    return Tests

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

def make_icloudapi_tests(blockdevice_api_factory):