# Copyright (c) 2023 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
# limitations under the License.

import unittest
from functools import partial

import hypothesis.strategies as st
import numpy as np
from auto_scan_test import PassAutoScanTest
from program_config import OpConfig, ProgramConfig, TensorConfig


class TestMatmulElementwiseAddMkldnnFusePass(PassAutoScanTest):
    def sample_program_config(self, draw):
        axis = draw(st.sampled_from([-1, 0, 1]))
        matmul_as_x = draw(st.booleans())
        batch_size = draw(st.integers(min_value=2, max_value=4))
        channel = draw(st.sampled_from([16, 32, 64]))
        input_dim = draw(st.sampled_from([16, 32, 64]))

        def generate_input():
            return np.random.random(
                [batch_size, channel, input_dim, input_dim]
            ).astype(np.float32)

        matmul_op = OpConfig(
            type='matmul',
            inputs={'X': ['matmul_x'], 'Y': ['matmul_y']},
            outputs={'Out': ['matmul_output']},
            attrs={
                'use_mkldnn': True,
            },
        )

        if matmul_as_x:
            inputs = {'X': ['matmul_output'], 'Y': ['elementwise_addend']}
        else:
            inputs = {'X': ['elementwise_addend'], 'Y': ['matmul_output']}

        elt_add_op = OpConfig(
            type='elementwise_add',
            inputs=inputs,
            outputs={'Out': ['elementwise_add_output']},
            attrs={'axis': axis, 'use_mkldnn': True},
        )

        model_net = [matmul_op, elt_add_op]

        program_config = ProgramConfig(
            ops=model_net,
            weights={},
            inputs={
                'matmul_x': TensorConfig(data_gen=partial(generate_input)),
                'matmul_y': TensorConfig(data_gen=partial(generate_input)),
                'elementwise_addend': TensorConfig(
                    data_gen=partial(generate_input)
                ),
            },
            outputs=['elementwise_add_output'],
        )

        return program_config

    def sample_predictor_configs(self, program_config):
        config = self.create_inference_config(
            use_mkldnn=True, passes=['matmul_elementwise_add_mkldnn_fuse_pass']
        )
        yield config, ['fused_matmul'], (1e-5, 1e-5)

    def test(self):
        self.run_and_statis(
            quant=False, passes=['matmul_elementwise_add_mkldnn_fuse_pass']
        )


if __name__ == '__main__':
    unittest.main()
