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# -*- coding: utf-8 -*-
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# Copyright (C) 2016-2016 RhodeCode GmbH
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License, version 3
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# (only), as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This program is dual-licensed. If you wish to learn more about the
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# RhodeCode Enterprise Edition, including its added features, Support services,
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# and proprietary license terms, please see https://rhodecode.com/licenses/
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import pytest
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from mock import call, patch
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from rhodecode.lib.vcs.backends.base import Reference
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class TestMercurialRemoteRepoInvalidation(object):
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default_ref = Reference('branch', 'default', None)
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writing_methods = [
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'bookmark',
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'commit',
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'merge',
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'pull',
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'pull_cmd',
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'rebase',
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'strip',
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'tag',
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]
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@pytest.mark.parametrize('method_name, method_args', [
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('_local_merge', [default_ref, None, None, None, default_ref]),
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('_local_pull', ['', default_ref]),
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('bookmark', [None]),
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('pull', ['', default_ref]),
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('remove_tag', ['mytag', None]),
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('strip', [None]),
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('tag', ['newtag', None]),
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])
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def test_method_invokes_invalidate_on_remote_repo(
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self, method_name, method_args, backend_hg):
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"""
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Check that the listed methods are invalidating the VCSServer cache
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after invoking a writing method of their remote repository object.
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"""
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tags = {'mytag': 'mytag-id'}
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def add_tag(name, raw_id, *args, **kwds):
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tags[name] = raw_id
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repo = backend_hg.repo.scm_instance()
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with patch.object(repo, '_remote') as remote:
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remote.lookup.return_value = ('commit-id', 'commit-idx')
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remote.tags.return_value = tags
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remote._get_tags.return_value = tags
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remote.tag.side_effect = add_tag
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# Invoke method.
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method = getattr(repo, method_name)
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method(*method_args)
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# Assert that every "writing" method is followed by an invocation
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# of the cache invalidation method.
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for counter, method_call in enumerate(remote.method_calls):
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call_name = method_call[0]
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if call_name in self.writing_methods:
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next_call = remote.method_calls[counter + 1]
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assert next_call == call.invalidate_vcs_cache()
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def _prepare_shadow_repo(self, pull_request):
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"""
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Helper that creates a shadow repo that can be used to reproduce the
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CommitDoesNotExistError when pulling in from target and source
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references.
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"""
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from rhodecode.model.pull_request import PullRequestModel
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target_vcs = pull_request.target_repo.scm_instance()
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target_ref = pull_request.target_ref_parts
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source_ref = pull_request.source_ref_parts
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# Create shadow repository.
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pr = PullRequestModel()
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workspace_id = pr._workspace_id(pull_request)
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shadow_repository_path = target_vcs._maybe_prepare_merge_workspace(
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workspace_id, target_ref)
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shadow_repo = target_vcs._get_shadow_instance(shadow_repository_path)
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# This will populate the cache of the mercurial repository object
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# inside of the VCSServer.
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shadow_repo.get_commit()
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return shadow_repo, source_ref, target_ref
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@pytest.mark.backends('hg')
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def test_commit_does_not_exist_error_happens(self, pr_util):
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from rhodecode.lib.vcs.exceptions import CommitDoesNotExistError
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pull_request = pr_util.create_pull_request()
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target_vcs = pull_request.target_repo.scm_instance()
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source_vcs = pull_request.source_repo.scm_instance()
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shadow_repo, source_ref, target_ref = self._prepare_shadow_repo(
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pull_request)
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# Pull from target and source references but without invalidation of
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# RemoteRepo objects and without VCSServer caching of mercurial
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# repository objects.
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with patch.object(shadow_repo._remote, 'invalidate_vcs_cache'):
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# NOTE: Do not use patch.dict() to disable the cache because it
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# restores the WHOLE dict and not only the patched keys.
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shadow_repo._remote._wire['cache'] = False
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shadow_repo._local_pull(target_vcs.path, target_ref)
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shadow_repo._local_pull(source_vcs.path, source_ref)
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shadow_repo._remote._wire.pop('cache')
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# Try to lookup the target_ref in shadow repo. This should work because
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# the shadow repo is a clone of the target and always contains all off
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# it's commits in the initial cache.
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shadow_repo.get_commit(target_ref.commit_id)
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# If we try to lookup the source_ref it should fail because the shadow
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# repo commit cache doesn't get invalidated. (Due to patched
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# invalidation and caching above).
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with pytest.raises(CommitDoesNotExistError):
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shadow_repo.get_commit(source_ref.commit_id)
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@pytest.mark.backends('hg')
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def test_commit_does_not_exist_error_does_not_happen(self, pr_util):
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pull_request = pr_util.create_pull_request()
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target_vcs = pull_request.target_repo.scm_instance()
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source_vcs = pull_request.source_repo.scm_instance()
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shadow_repo, source_ref, target_ref = self._prepare_shadow_repo(
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pull_request)
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# Pull from target and source references without without VCSServer
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# caching of mercurial repository objects but with active invalidation
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# of RemoteRepo objects.
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# NOTE: Do not use patch.dict() to disable the cache because it
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# restores the WHOLE dict and not only the patched keys.
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shadow_repo._remote._wire['cache'] = False
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shadow_repo._local_pull(target_vcs.path, target_ref)
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shadow_repo._local_pull(source_vcs.path, source_ref)
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shadow_repo._remote._wire.pop('cache')
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# Try to lookup the target and source references in shadow repo. This
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# should work because the RemoteRepo object gets invalidated during the
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# above pull operations.
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shadow_repo.get_commit(target_ref.commit_id)
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shadow_repo.get_commit(source_ref.commit_id)
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