# Copyright (c) 2021, NVIDIA CORPORATION.  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 subprocess
import sys
from os import path

import pytest


class TestHydraRunner:
    @pytest.mark.integration
    def test_no_config(self):
        """"Test app without config - fields missing causes error.
        """
        # Create system call.
        call = "python tests/hydra/my_app.py"

        with pytest.raises(subprocess.CalledProcessError):
            # Run the call as subprocess.
            subprocess.check_call(call, shell=True, stdout=sys.stdout, stderr=sys.stdout)

    @pytest.mark.integration
    def test_config1(self):
        """"Test injection of valid config1.
        """
        # Create system call.
        call = "python tests/hydra/my_app.py --config-name config1.yaml"

        # Run the call as subprocess.
        subprocess.check_call(call, shell=True, stdout=sys.stdout, stderr=sys.stdout)

        # Make sure that .hydra dir is not present.
        assert not path.exists(f".hydra")
        # Make sure that default hydra log file is not present.
        assert not path.exists(f"my_app.log")

    @pytest.mark.integration
    def test_config1_invalid(self):
        """"Test injection of invalid config1.
        """
        # Create system call.
        call = "python tests/hydra/my_app.py --config-name config1_invalid.yaml"

        with pytest.raises(subprocess.CalledProcessError):
            # Run the call as subprocess.
            subprocess.check_call(call, shell=True, stdout=sys.stdout, stderr=sys.stdout)

    @pytest.mark.integration
    def test_config2(self):
        """"Test injection of valid config2 from a different folder.
        """
        # Create system call.
        call = "python tests/hydra/my_app.py --config-path config_subdir --config-name config2.yaml"

        # Run the call as subprocess.
        subprocess.check_call(call, shell=True, stdout=sys.stdout, stderr=sys.stdout)

        # Make sure that .hydra dir is not present.
        assert not path.exists(f".hydra")
        # Make sure that default hydra log file is not present.
        assert not path.exists(f"my_app.log")

    @pytest.mark.integration
    def test_config2_invalid(self):
        """"Test injection of invalid config2 from a different folder.
        """
        # Create system call.
        call = "python tests/hydra/my_app.py --config-path config_subdir --config-name config2_invalid.yaml"

        with pytest.raises(subprocess.CalledProcessError):
            # Run the call as subprocess.
            subprocess.check_call(call, shell=True, stdout=sys.stdout, stderr=sys.stdout)

    @pytest.mark.integration
    def test_config2_filepath_schema(self):
        """"Test injection of valid config2 - using namepath with schema is prohibited.
        """
        # Create system call.
        call = "python tests/hydra/my_app.py --config-name config_subdir/config2_invalid.yaml"

        with pytest.raises(subprocess.CalledProcessError):
            # Run the call as subprocess.
            subprocess.check_call(call, shell=True, stdout=sys.stdout, stderr=sys.stdout)