# Copyright 2019-2020 Amazon.com, Inc. or its affiliates. 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.
# A copy of the License is located at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# or in the "license" file accompanying this file. This file 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 __future__ import absolute_import

import os

import pytest
import requests
from sagemaker.mxnet.model import MXNetModel

from integration import RESOURCE_PATH
from utils import local_mode_utils

DEFAULT_HANDLER_PATH = os.path.join(RESOURCE_PATH, 'default_handlers')
MODEL_PATH = os.path.join(DEFAULT_HANDLER_PATH, 'model')
SCRIPT_PATH = os.path.join(MODEL_PATH, 'code', 'empty_module.py')


@pytest.fixture(scope='module')
def predictor(image_uri, sagemaker_local_session, local_instance_type):
    model = MXNetModel('file://{}'.format(MODEL_PATH),
                       'SageMakerRole',
                       SCRIPT_PATH,
                       image=image_uri,
                       sagemaker_session=sagemaker_local_session)

    with local_mode_utils.lock():
        try:
            predictor = model.deploy(1, local_instance_type)
            yield predictor
        finally:
            predictor.delete_endpoint()


def test_default_model_fn(predictor):
    input = [[1, 2]]
    output = predictor.predict(input)
    assert [[4.9999918937683105]] == output


def test_default_model_fn_content_type(predictor):
    r = requests.post('http://localhost:8080/invocations', json=[[1, 2]])
    assert 'application/json' == r.headers['Content-Type']
    assert [[4.9999918937683105]] == r.json()