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# Copyright 2009-2011 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Common helpers for codehosting tests."""
__metaclass__ = type
__all__ = [
'AvatarTestCase',
'adapt_suite',
'CodeHostingTestProviderAdapter',
'create_branch_with_one_revision',
'deferToThread',
'LoomTestMixin',
'make_bazaar_branch_and_tree',
'TestResultWrapper',
]
import os
import threading
import unittest
from bzrlib.bzrdir import BzrDir
from bzrlib.errors import FileExists
from bzrlib.plugins.loom import branch as loom_branch
from bzrlib.tests import (
TestNotApplicable,
TestSkipped,
)
from testtools.deferredruntest import AsynchronousDeferredRunTest
from twisted.internet import (
defer,
threads,
)
from twisted.python.util import mergeFunctionMetadata
from canonical.config import config
from lp.code.enums import BranchType
from lp.codehosting.vfs import branch_id_to_path
from lp.testing import TestCase
class AvatarTestCase(TestCase):
"""Base class for tests that need a LaunchpadAvatar with some basic sample
data.
"""
run_tests_with = AsynchronousDeferredRunTest
def setUp(self):
super(AvatarTestCase, self).setUp()
# A basic user dict, 'alice' is a member of no teams (aside from the
# user themself).
self.aliceUserDict = {
'id': 1,
'name': 'alice',
'teams': [{'id': 1, 'name': 'alice'}],
'initialBranches': [(1, [])]
}
# An slightly more complex user dict for a user, 'bob', who is also a
# member of a team.
self.bobUserDict = {
'id': 2,
'name': 'bob',
'teams': [{'id': 2, 'name': 'bob'},
{'id': 3, 'name': 'test-team'}],
'initialBranches': [(2, []), (3, [])]
}
class LoomTestMixin:
"""Mixin to provide Bazaar test classes with limited loom support."""
def loomify(self, branch):
tree = branch.create_checkout('checkout')
tree.lock_write()
try:
tree.branch.nick = 'bottom-thread'
loom_branch.loomify(tree.branch)
finally:
tree.unlock()
loom_tree = tree.bzrdir.open_workingtree()
loom_tree.lock_write()
loom_tree.branch.new_thread('bottom-thread')
loom_tree.commit('this is a commit', rev_id='commit-1')
loom_tree.unlock()
loom_tree.branch.record_loom('sample loom')
self.get_transport().delete_tree('checkout')
return loom_tree
def makeLoomBranchAndTree(self, tree_directory):
"""Make a looms-enabled branch and working tree."""
tree = self.make_branch_and_tree(tree_directory)
tree.lock_write()
try:
tree.branch.nick = 'bottom-thread'
loom_branch.loomify(tree.branch)
finally:
tree.unlock()
loom_tree = tree.bzrdir.open_workingtree()
loom_tree.lock_write()
loom_tree.branch.new_thread('bottom-thread')
loom_tree.commit('this is a commit', rev_id='commit-1')
loom_tree.unlock()
loom_tree.branch.record_loom('sample loom')
return loom_tree
def deferToThread(f):
"""Run the given callable in a separate thread and return a Deferred which
fires when the function completes.
"""
def decorated(*args, **kwargs):
d = defer.Deferred()
def runInThread():
return threads._putResultInDeferred(d, f, args, kwargs)
t = threading.Thread(target=runInThread)
t.start()
return d
return mergeFunctionMetadata(f, decorated)
def clone_test(test, new_id):
"""Return a clone of the given test."""
from copy import deepcopy
new_test = deepcopy(test)
def make_new_test_id():
return lambda: new_id
new_test.id = make_new_test_id()
return new_test
class CodeHostingTestProviderAdapter:
"""Test adapter to run a single test against many codehosting servers."""
def __init__(self, schemes):
self._schemes = schemes
def adaptForServer(self, test, scheme):
new_test = clone_test(test, '%s(%s)' % (test.id(), scheme))
new_test.scheme = scheme
return new_test
def adapt(self, test):
result = unittest.TestSuite()
for scheme in self._schemes:
new_test = self.adaptForServer(test, scheme)
result.addTest(new_test)
return result
def make_bazaar_branch_and_tree(db_branch):
"""Make a dummy Bazaar branch and working tree from a database Branch."""
assert db_branch.branch_type == BranchType.HOSTED, (
"Can only create branches for HOSTED branches: %r"
% db_branch)
branch_dir = os.path.join(
config.codehosting.hosted_branches_root,
branch_id_to_path(db_branch.id))
return create_branch_with_one_revision(branch_dir)
def adapt_suite(adapter, base_suite):
from bzrlib.tests import iter_suite_tests
suite = unittest.TestSuite()
for test in iter_suite_tests(base_suite):
suite.addTests(adapter.adapt(test))
return suite
def create_branch_with_one_revision(branch_dir, format=None):
"""Create a dummy Bazaar branch at the given directory."""
if not os.path.exists(branch_dir):
os.makedirs(branch_dir)
try:
tree = BzrDir.create_standalone_workingtree(branch_dir, format)
except FileExists:
return
f = open(os.path.join(branch_dir, 'hello'), 'w')
f.write('foo')
f.close()
tree.commit('message')
return tree
class TestResultWrapper:
"""A wrapper for `TestResult` that knows about bzrlib's `TestSkipped`."""
def __init__(self, result):
self.result = result
def addError(self, test_case, exc_info):
if isinstance(exc_info[1], (TestSkipped, TestNotApplicable)):
# If Bazaar says the test was skipped, or that it wasn't
# applicable to this environment, then treat that like a success.
# After all, it's not exactly an error, is it?
self.result.addSuccess(test_case)
else:
self.result.addError(test_case, exc_info)
def addFailure(self, test_case, exc_info):
self.result.addFailure(test_case, exc_info)
def addSuccess(self, test_case):
self.result.addSuccess(test_case)
def startTest(self, test_case):
self.result.startTest(test_case)
def stopTest(self, test_case):
self.result.stopTest(test_case)
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