# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4 -*-
#
# Copyright (C) 2017-2018 Canonical Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3 as
# published by the Free Software Foundation.
#
# 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/>.

import os
import subprocess

import apt
import testscenarios
from testtools.matchers import Equals

from tests import integration


class BuildPackageVersionTestCase(testscenarios.WithScenarios,
                                  integration.TestCase):

    scenarios = (
        ('global', dict(
            project='build-package', package='hello', part='hello')),
        ('local', dict(
            project='build-package-global', package='haskell-doc', part=None)),
    )

    def test_build_package_gets_version(self):
        self.copy_project_to_cwd(self.project)
        version = self.set_build_package_version(
            os.path.join('snap', 'snapcraft.yaml'), self.part,
            package=self.package)
        self.run_snapcraft('pull')

        with apt.Cache() as apt_cache:
            installed_version = apt_cache[self.package].candidate.version
        self.assertThat(installed_version, Equals(version))


class BuildPackageVersionErrorsTestCase(integration.TestCase):

    def test_build_package_with_invalid_version_must_fail(self):
        self.copy_project_to_cwd('build-package-global')
        self.set_build_package_version(
            os.path.join('snap', 'snapcraft.yaml'),
            part=None, package='haskell-doc', version='invalid')
        error = self.assertRaises(
            subprocess.CalledProcessError,
            self.run_snapcraft, 'pull')
        self.assertIn(
            "Could not find a required package in 'build-packages': "
            "haskell-doc=invalid",
            str(error.output)
        )
