# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4 -*-
#
# Copyright (C) 2015-2018 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

from testtools.matchers import (
    Equals,
    Contains,
)

from tests import integration


class AfterTestCase(integration.TestCase):

    def test_stage_dependencies(self):
        self.run_snapcraft('stage', 'dependencies')

        self.assertTrue(
            os.access(
                os.path.join(self.stage_dir, 'bin', 'p3'),
                os.X_OK))

    def test_build_with_circular_dependencies(self):
        self.copy_project_to_cwd('dependencies')

        with open('snapcraft.yaml', 'r') as snapcraft_yaml:
            snapcraft_yaml_contents = snapcraft_yaml.read()
        with open('snapcraft.yaml', 'w') as snapcraft_yaml:
            snapcraft_yaml.write(
                snapcraft_yaml_contents.replace(
                    'p1:',
                    'p1:\n'
                    '    after: [p3]'))

        # We update here to get a clean log/stdout later
        self.run_snapcraft('update')

        exception = self.assertRaises(
            subprocess.CalledProcessError,
            self.run_snapcraft, 'build')

        self.assertThat(exception.returncode, Equals(2))
        expected = (
            'Issue detected while analyzing snapcraft.yaml: '
            'circular dependency chain found in parts definition\n')
        self.assertThat(exception.output, Contains(expected))

    def test_build_with_missing_dependencies(self):
        self.copy_project_to_cwd('dependencies')

        with open('snapcraft.yaml', 'r') as snapcraft_yaml:
            snapcraft_yaml_contents = snapcraft_yaml.read()
        wrong_contents = snapcraft_yaml_contents.replace(
            '    after: [p1]\n',
            '')
        wrong_contents = wrong_contents.replace(
            '    after: [p2]\n',
            '')
        with open('snapcraft.yaml', 'w') as snapcraft_yaml:
            snapcraft_yaml.write(wrong_contents)

        exception = self.assertRaises(
            subprocess.CalledProcessError,
            self.run_snapcraft, 'build')

        self.assertThat(exception.returncode, Equals(2))

    def test_pull_with_tree_of_dependencies(self):
        self.run_snapcraft(
            'pull', os.path.join('circular-dependencies', 'tree'))

    def test_pull_with_circular_dependencies(self):
        self.assertRaises(
            subprocess.CalledProcessError,
            self.run_snapcraft, 'pull',
            os.path.join('circular-dependencies', 'circle'))
