# Copyright 2020,2021 Sony Corporation.
# Copyright 2021 Sony Group Corporation.
#
# 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
#
#     http://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 unittest import mock

import pytest

from nnabla_rl.hooks import IterationNumHook
from nnabla_rl.logger import logger


class TestIterationStateHook():
    def test_call(self):
        dummy_algorithm = mock.MagicMock()

        hook = IterationNumHook(timing=1)

        with mock.patch.object(logger, 'info') as mock_logger:
            for i in range(10):
                dummy_algorithm.iteration_num = i
                hook(dummy_algorithm)
            assert mock_logger.call_count == 10


if __name__ == "__main__":
    pytest.main()
