# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
#
# 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
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import legacy_test.test_collective_api_base as test_base

import paddle.distributed as dist
from paddle import fluid


class TestCollectiveScatterObjectListAPI(test_base.TestCollectiveAPIRunnerBase):
    def __init__(self):
        self.global_ring_id = 0

    def get_model(self, main_prog, startup_program, rank, indata=None):
        with fluid.program_guard(main_prog, startup_program):
            data_len = len(indata) // 2
            in_object_list = [indata[:data_len], indata[data_len:]]
            out_object_list = []
            dist.scatter_object_list(out_object_list, in_object_list, src=1)
            return out_object_list


if __name__ == "__main__":
    test_base.runtime_main(
        TestCollectiveScatterObjectListAPI, "scatter_object_list"
    )
