How to use the slackclient.user.User function in slackclient

def patch_slackclient_channels_find(monkeypatch):
    test_data_mapping.append(User(None, test_user_name, test_user_id, test_user_name, None, test_user_email))
    test_data_mapping.append(Channel(None, test_channel_name, test_channel_id, None))

    def find(self, id):
        res = [x for x in test_data_mapping if x == id]
        if len(res) > 0:
            return res[0]
        return None
    monkeypatch.setattr('slackclient.util.SearchList.find', find)

def __init__(self):
        self.server = DummyServer()
        self.server.channels.append(Channel(None, test_channel_name, test_channel_id))
        self.server.channels.append(Channel(None, test_group_name, test_group_id))
        self.server.users.append(User(None, test_user_name, test_user_id, test_user_name, None, test_user_email))
        self.topic = 'Test Topic'

def test_server_parse_user_data(server, rtm_start_fixture):
    server.parse_user_data(rtm_start_fixture["users"])
    # Find user by Name
    user_by_name = server.users.find('fakeuser')
    assert type(user_by_name) == User
    assert user_by_name == "fakeuser"
    assert user_by_name != "someotheruser"
    # Find user by ID
    user_by_id = server.users.find('U10CX1234')
    assert type(user_by_id) == User
    assert user_by_id == "fakeuser"
    assert user_by_id.email == 'fakeuser@example.com'
    # Don't find invalid user
    user_by_id = server.users.find('invaliduser')
    assert user_by_id is None

def patch_slackclient_channels_find(monkeypatch):
    test_user_mapping.append(User(None, test_user_name, test_user_id, test_user_name, None, test_user_email))

    def find(self, id):
        users = [x for x in test_user_mapping if x == id]
        if len(users) > 0:
            return users[0]
        return None
    monkeypatch.setattr('slackclient.util.SearchList.find', find)

def attach_user(self, name, user_id, real_name, tz, email):
        self.users.update({user_id: User(self, name, user_id, real_name, tz, email)})

def attach_user(self, name, user_id, real_name, tz, email):
        self.users.update({user_id: User(self, name, user_id, real_name, tz, email)})