# ******************************************************************************
# Copyright 2017-2020 Intel 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.
# ******************************************************************************
import pytest
import test


def pytest_addoption(parser):
    parser.addoption('--backend', default='INTERPRETER',
                     choices=['INTERPRETER', 'CPU', 'GPU', 'NNP', 'PlaidML', 'INTELGPU'],
                     help='Select from available backends')


def pytest_configure(config):
    backend_name = config.getvalue('backend')
    test.BACKEND_NAME = backend_name


def pytest_collection_modifyitems(config, items):
    backend_name = config.getvalue('backend')

    keywords = {
        'GPU': 'skip_on_gpu',
        'CPU': 'skip_on_cpu',
        'NNP': 'skip_on_nnp',
        'INTERPRETER': 'skip_on_interpreter',
        'PlaidML': 'skip_on_plaidml',
        'INTELGPU': 'skip_on_intelgpu',
    }

    skip_markers = {
        'GPU': pytest.mark.skip(reason='Skipping test on the GPU backend.'),
        'CPU': pytest.mark.skip(reason='Skipping test on the CPU backend.'),
        'NNP': pytest.mark.skip(reason='Skipping test on the NNP backend.'),
        'INTERPRETER': pytest.mark.skip(reason='Skipping test on the INTERPRETER backend.'),
        'PlaidML': pytest.mark.skip(reason='Skipping test on the PlaidML backend.'),
        'INTELGPU': pytest.mark.skip(reason='Skipping test on the INTELGPU backend.'),
    }

    for item in items:
        skip_this_backend = keywords[backend_name]
        if skip_this_backend in item.keywords:
            item.add_marker(skip_markers[backend_name])
