pungi/tests/helpers.py

# -*- coding: utf-8 -*-

import difflib
import errno
import imp
import os
import shutil
import tempfile
from collections import defaultdict

import mock
import six
from kobo.rpmlib import parse_nvr

try:
    import unittest2 as unittest
except ImportError:
    import unittest

from pungi.util import get_arch_variant_data
from pungi import paths, checks
from pungi.module_util import Modulemd


class BaseTestCase(unittest.TestCase):

    def assertFilesEqual(self, fn1, fn2):
        with open(fn1, 'rb') as f1:
            lines1 = f1.read().decode('utf-8').splitlines()
        with open(fn2, 'rb') as f2:
            lines2 = f2.read().decode('utf-8').splitlines()
        diff = '\n'.join(difflib.unified_diff(lines1, lines2,
                                              fromfile='EXPECTED', tofile='ACTUAL'))
        self.assertEqual(diff, '', 'Files differ:\n' + diff)

    def assertFileContent(self, fn, expected):
        with open(fn, 'rb') as f:
            lines = f.read().decode('utf-8').splitlines()
        diff = '\n'.join(difflib.unified_diff(
            lines, expected.splitlines(), fromfile='EXPECTED', tofile='ACTUAL')
        )
        self.assertEqual(diff, '', 'Files differ:\n' + diff)


class PungiTestCase(BaseTestCase):
    def setUp(self):
        self.topdir = tempfile.mkdtemp()

    def tearDown(self):
        try:
            shutil.rmtree(self.topdir)
        except OSError as err:
            if err.errno != errno.ENOENT:
                raise

    def assertValidConfig(self, conf):
        self.assertEqual(checks.validate(conf, offline=True), ([], []))

    def _make_pkgset_phase(self, names):
        pkgsets = []
        for name in names:
            pkgset = mock.Mock(paths={})
            pkgset.name = name
            for arch in ("x86_64", "amd64"):
                pkgset.paths[arch] = os.path.join(
                    self.topdir, "work", arch, "repo", name
                )
            pkgsets.append(pkgset)
        return mock.Mock(package_sets=pkgsets)


class MockVariant(mock.Mock):
    def __init__(self, is_empty=False, name=None, *args, **kwargs):
        super(MockVariant, self).__init__(*args, is_empty=is_empty, **kwargs)
        self.parent = kwargs.get('parent', None)
        self.arch_mmds = {}
        self.module_uid_to_koji_tag = {}
        self.variants = {}
        self.pkgsets = set()
        self.modules = None
        self.name = name
        self.nsvc_to_pkgset = defaultdict(lambda: mock.Mock(rpms_by_arch={}))

    def __str__(self):
        return self.uid

    def get_variants(self, arch=None, types=None):
        return [v for v in list(self.variants.values())
                if (not arch or arch in v.arches) and (not types or v.type in types)]

    def get_modules(self, arch=None, types=None):
        return []

    def get_modular_koji_tags(self, arch=None, types=None):
        return []

    def add_fake_module(self, nsvc, rpm_nvrs=None, with_artifacts=False, mmd_arch=None):
        if not Modulemd:
            # No support for modules
            return
        name, stream, version, context = nsvc.split(":")
        module_stream = Modulemd.ModuleStreamV2.new(name, stream)
        module_stream.set_version(int(version))
        module_stream.set_context(context)
        module_stream.set_summary("foo")
        module_stream.set_description("foo")
        module_stream.add_module_license("GPL")

        if rpm_nvrs:
            for rpm_nvr in rpm_nvrs:
                rpm_name = parse_nvr(rpm_nvr)["name"]
                component = Modulemd.ComponentRpm.new(rpm_nvr)
                component.set_name(rpm_name)
                component.set_rationale("Needed for test")
                module_stream.add_component(component)
                if with_artifacts:
                    module_stream.add_rpm_artifact(rpm_nvr)

        if self.modules is None:
            self.modules = []
        self.modules.append(":".join([name, stream, version]))
        if mmd_arch:
            nsvc = module_stream.get_nsvc()
            self.arch_mmds.setdefault(mmd_arch, {})[nsvc] = module_stream
        return module_stream


class IterableMock(mock.Mock):
    def __iter__(self):
        return iter([])


class DummyCompose(object):
    def __init__(self, topdir, config):
        self.supported = True
        self.compose_date = '20151203'
        self.compose_type_suffix = '.t'
        self.compose_type = 'test'
        self.compose_respin = 0
        self.compose_id = 'Test-20151203.0.t'
        self.compose_label = None
        self.compose_label_major_version = None
        self.image_release = '20151203.t.0'
        self.image_version = '25'
        self.ci_base = mock.Mock(
            release_id='Test-1.0',
            release=mock.Mock(
                short='test',
                version='1.0',
                is_layered=False,
                type_suffix=''
            ),
        )
        self.topdir = topdir
        self.conf = load_config(PKGSET_REPOS, **config)
        checks.validate(self.conf, offline=True)
        self.paths = paths.Paths(self)
        self.has_comps = True
        self.variants = {
            'Server': MockVariant(uid='Server', arches=['x86_64', 'amd64'],
                                  type='variant', id='Server', name='Server'),
            'Client': MockVariant(uid='Client', arches=['amd64'],
                                  type='variant', id='Client', name='Client'),
            'Everything': MockVariant(uid='Everything', arches=['x86_64', 'amd64'],
                                      type='variant', id='Everything', name='Everything'),
        }
        self.all_variants = self.variants.copy()

        # for PhaseLoggerMixin
        self._logger = mock.Mock(name="compose._logger")
        self._logger.handlers = [mock.Mock()]

        self.log_info = mock.Mock()
        self.log_error = mock.Mock()
        self.log_debug = mock.Mock()
        self.log_warning = mock.Mock()
        self.get_image_name = mock.Mock(return_value='image-name')
        self.image = mock.Mock(
            path='Client/i386/iso/image.iso', can_fail=False, size=123, _max_size=None,
        )
        self.im = mock.Mock(images={'Client': {'amd64': [self.image]}})
        self.old_composes = []
        self.config_dir = '/home/releng/config'
        self.notifier = None
        self.attempt_deliverable = mock.Mock()
        self.fail_deliverable = mock.Mock()
        self.require_deliverable = mock.Mock()
        self.should_create_yum_database = True
        self.cache_region = None

    def setup_optional(self):
        self.all_variants['Server-optional'] = MockVariant(
            uid='Server-optional', arches=['x86_64'], type='optional')
        self.all_variants['Server-optional'].parent = self.variants['Server']
        self.variants['Server'].variants['optional'] = self.all_variants['Server-optional']

    def setup_addon(self):
        self.all_variants['Server-HA'] = MockVariant(
            uid='Server-HA', arches=['x86_64'], type='addon', is_empty=False)
        self.all_variants['Server-HA'].parent = self.variants['Server']
        self.variants['Server'].variants['HA'] = self.all_variants['Server-HA']

    def get_variants(self, arch=None, types=None):
        return [v for v in list(self.all_variants.values())
                if (not arch or arch in v.arches) and (not types or v.type in types)]

    def can_fail(self, variant, arch, deliverable):
        failable = get_arch_variant_data(self.conf, 'failable_deliverables', arch, variant)
        return deliverable in failable

    def get_arches(self):
        result = set()
        for variant in list(self.variants.values()):
            result |= set(variant.arches)
        return sorted(result)

    def mkdtemp(self, suffix="", prefix="tmp"):
        return tempfile.mkdtemp(suffix=suffix, prefix=prefix, dir=self.topdir)


def touch(path, content=None):
    """Helper utility that creates an dummy file in given location. Directories
    will be created."""
    content = content or (path + '\n')
    try:
        os.makedirs(os.path.dirname(path))
    except OSError:
        pass
    if not isinstance(content, six.binary_type):
        content = content.encode()
    with open(path, 'wb') as f:
        f.write(content)
    return path


FIXTURE_DIR = os.path.join(os.path.dirname(__file__), 'fixtures')


def copy_fixture(fixture_name, dest):
    src = os.path.join(FIXTURE_DIR, fixture_name)
    touch(dest)
    shutil.copy2(src, dest)


def boom(*args, **kwargs):
    raise Exception('BOOM')


def mk_boom(cls=Exception, msg='BOOM'):
    def b(*args, **kwargs):
        raise cls(msg)
    return b


PKGSET_REPOS = dict(
    pkgset_source='repos',
    pkgset_repos={},
)

BASE_CONFIG = dict(
    release_short='test',
    release_name='Test',
    release_version='1.0',
    variants_file='variants.xml',
    createrepo_checksum='sha256',
    gather_method='deps',
)


def load_config(data={}, **kwargs):
    conf = dict()
    conf.update(BASE_CONFIG)
    conf.update(data)
    conf.update(kwargs)
    return conf


def load_bin(name):
    return imp.load_source('pungi_cli_fake_' + name, os.path.dirname(__file__) + "/../bin/" + name)


def fake_run_in_threads(func, params, threads=None):
    """Like run_in_threads from Kobo, but actually runs tasks serially."""
    for num, param in enumerate(params):
        func(None, param, num)