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# Copyright 2022 Canonical, Ltd.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# from unittest.mock import Mock

from subiquitycore.tests import SubiTestCase
from subiquitycore.utils import orig_environ


class TestOrigEnviron(SubiTestCase):
    def test_empty(self):
        env = {}
        expected = env
        self.assertEqual(expected, orig_environ(env))

    def test_orig_path(self):
        env = {'PATH': 'a', 'PATH_ORIG': 'b'}
        expected = {'PATH': 'b'}
        self.assertEqual(expected, orig_environ(env))

    def test_not_this_key(self):
        env = {'PATH': 'a', 'PATH_ORIG_AAAAA': 'b'}
        expected = env
        self.assertEqual(expected, orig_environ(env))

    def test_remove_empty_key(self):
        env = {'STUFF': 'a', 'STUFF_ORIG': ''}
        expected = {}
        self.assertEqual(expected, orig_environ(env))

    def test_practical(self):
        snap = '/snap/subiquity/1234'
        env = {
            'TERM': 'linux',
            'PYTHONIOENCODING_ORIG': '',
            'PYTHONIOENCODING': 'utf-8',
            'SUBIQUITY_ROOT_ORIG': '',
            'SUBIQUITY_ROOT': snap,
            'PYTHON_ORIG': '',
            'PYTHON': f'{snap}/usr/bin/python3.8',
            'PYTHONPATH_ORIG': '',
            'PYTHONPATH': f'{snap}/stuff/things',