# Copyright 2021 The WAX-ML Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from abc import ABCMeta
from dataclasses import dataclass

from wax.gym.agent import Agent


def test_agent():
    Agent.__abstractmethods__ = set()

    @dataclass
    class DummyAgent(Agent):
        name = None
        ...

    agent = DummyAgent()
    agent.reset()
    agent.feed(reward=0.0)
    action = agent(obs={})
    assert isinstance(Agent, ABCMeta)
    assert action is None
