# Copyright (C) 2019 the Software Heritage developers # License: GNU General Public License version 3, or any later version # See top-level LICENSE file for more information import abc import time from unittest import TestCase from unittest.mock import Mock, patch import requests_mock from sqlalchemy import create_engine from swh.lister.core.abstractattribute import AbstractAttribute from swh.lister.tests.test_utils import init_db def noop(*args, **kwargs): pass class HttpListerTesterBase(abc.ABC): """Testing base class for listers. This contains methods for both :class:`HttpSimpleListerTester` and :class:`HttpListerTester`. See :class:`swh.lister.gitlab.tests.test_lister` for an example of how to customize for a specific listing service. """ Lister = AbstractAttribute('The lister class to test') lister_subdir = AbstractAttribute('bitbucket, github, etc.') good_api_response_file = AbstractAttribute('Example good response body') LISTER_NAME = 'fake-lister' # May need to override this if the headers are used for something def response_headers(self, request): return {} # May need to override this if the server uses non-standard rate limiting # method. # Please keep the requested retry delay reasonably low. def mock_rate_quota(self, n, request, context): self.rate_limit += 1 context.status_code = 429 context.headers['Retry-After'] = '1' return '{"error":"dummy"}' def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.rate_limit = 1 self.response = None self.fl = None self.helper = None if self.__class__ != HttpListerTesterBase: self.run = TestCase.run.__get__(self, self.__class__) else: self.run = noop def mock_limit_n_response(self, n, request, context): self.fl.reset_backoff() if self.rate_limit <= n: return self.mock_rate_quota(n, request, context) else: return self.mock_response(request, context) def mock_limit_twice_response(self, request, context): return self.mock_limit_n_response(2, request, context) def get_api_response(self, identifier): fl = self.get_fl() if self.response is None: self.response = fl.safely_issue_request(identifier) return self.response def get_fl(self, override_config=None): """Retrieve an instance of fake lister (fl). """ if override_config or self.fl is None: self.fl = self.Lister(url='https://fakeurl', override_config=override_config) self.fl.INITIAL_BACKOFF = 1 self.fl.reset_backoff() return self.fl def disable_scheduler(self, fl): fl.schedule_missing_tasks = Mock(return_value=None) def disable_db(self, fl): fl.winnow_models = Mock(return_value=[]) fl.db_inject_repo = Mock(return_value=fl.MODEL()) fl.disable_deleted_repo_tasks = Mock(return_value=None) def init_db(self, db, model): engine = create_engine(db.url()) model.metadata.create_all(engine) @requests_mock.Mocker() def test_is_within_bounds(self, http_mocker): fl = self.get_fl() self.assertFalse(fl.is_within_bounds(1, 2, 3)) self.assertTrue(fl.is_within_bounds(2, 1, 3)) self.assertTrue(fl.is_within_bounds(1, 1, 1)) self.assertTrue(fl.is_within_bounds(1, None, None)) self.assertTrue(fl.is_within_bounds(1, None, 2)) self.assertTrue(fl.is_within_bounds(1, 0, None)) self.assertTrue(fl.is_within_bounds("b", "a", "c")) self.assertFalse(fl.is_within_bounds("a", "b", "c")) self.assertTrue(fl.is_within_bounds("a", None, "c")) self.assertTrue(fl.is_within_bounds("a", None, None)) self.assertTrue(fl.is_within_bounds("b", "a", None)) self.assertFalse(fl.is_within_bounds("a", "b", None)) self.assertTrue(fl.is_within_bounds("aa:02", "aa:01", "aa:03")) self.assertFalse(fl.is_within_bounds("aa:12", None, "aa:03")) with self.assertRaises(TypeError): fl.is_within_bounds(1.0, "b", None) with self.assertRaises(TypeError): fl.is_within_bounds("A:B", "A::B", None) class HttpListerTester(HttpListerTesterBase, abc.ABC): """Base testing class for subclass of :class:`swh.lister.core.indexing_lister.IndexingHttpLister` See :class:`swh.lister.github.tests.test_gh_lister` for an example of how to customize for a specific listing service. """ last_index = AbstractAttribute('Last index in good_api_response') first_index = AbstractAttribute('First index in good_api_response') bad_api_response_file = AbstractAttribute('Example bad response body') entries_per_page = AbstractAttribute('Number of results in good response') test_re = AbstractAttribute('Compiled regex matching the server url. Must' ' capture the index value.') convert_type = str """static method used to convert the "request_index" to its right type (for indexing listers for example, this is in accordance with the model's "indexable" column). """ def mock_response(self, request, context): self.fl.reset_backoff() self.rate_limit = 1 context.status_code = 200 custom_headers = self.response_headers(request) context.headers.update(custom_headers) req_index = self.request_index(request) if req_index == self.first_index: response_file = self.good_api_response_file else: response_file = self.bad_api_response_file with open('swh/lister/%s/tests/%s' % (self.lister_subdir, response_file), 'r', encoding='utf-8') as r: return r.read() def request_index(self, request): m = self.test_re.search(request.path_url) if m and (len(m.groups()) > 0): return self.convert_type(m.group(1)) @requests_mock.Mocker() def test_fetch_multiple_pages_yesdb(self, http_mocker): http_mocker.get(self.test_re, text=self.mock_response) db = init_db() fl = self.get_fl(override_config={ 'lister': { 'cls': 'local', 'args': {'db': db.url()} } }) self.init_db(db, fl.MODEL) self.disable_scheduler(fl) fl.run(min_bound=self.first_index) self.assertEqual(fl.db_last_index(), self.last_index) partitions = fl.db_partition_indices(5) self.assertGreater(len(partitions), 0) for k in partitions: self.assertLessEqual(len(k), 5) self.assertGreater(len(k), 0) @requests_mock.Mocker() def test_fetch_none_nodb(self, http_mocker): http_mocker.get(self.test_re, text=self.mock_response) fl = self.get_fl() self.disable_scheduler(fl) self.disable_db(fl) fl.run(min_bound=1, max_bound=1) # stores no results # FIXME: Determine what this method tries to test and add checks to # actually test @requests_mock.Mocker() def test_fetch_one_nodb(self, http_mocker): http_mocker.get(self.test_re, text=self.mock_response) fl = self.get_fl() self.disable_scheduler(fl) self.disable_db(fl) fl.run(min_bound=self.first_index, max_bound=self.first_index) # FIXME: Determine what this method tries to test and add checks to # actually test @requests_mock.Mocker() def test_fetch_multiple_pages_nodb(self, http_mocker): http_mocker.get(self.test_re, text=self.mock_response) fl = self.get_fl() self.disable_scheduler(fl) self.disable_db(fl) fl.run(min_bound=self.first_index) # FIXME: Determine what this method tries to test and add checks to # actually test @requests_mock.Mocker() def test_repos_list(self, http_mocker): """Test the number of repos listed by the lister """ http_mocker.get(self.test_re, text=self.mock_response) li = self.get_fl().transport_response_simplified( self.get_api_response(self.first_index) ) self.assertIsInstance(li, list) self.assertEqual(len(li), self.entries_per_page) @requests_mock.Mocker() def test_model_map(self, http_mocker): """Check if all the keys of model are present in the model created by the `transport_response_simplified` """ http_mocker.get(self.test_re, text=self.mock_response) fl = self.get_fl() li = fl.transport_response_simplified( self.get_api_response(self.first_index)) di = li[0] self.assertIsInstance(di, dict) pubs = [k for k in vars(fl.MODEL).keys() if not k.startswith('_')] for k in pubs: if k not in ['last_seen', 'task_id', 'id']: self.assertIn(k, di) @requests_mock.Mocker() def test_api_request(self, http_mocker): """Test API request for rate limit handling """ http_mocker.get(self.test_re, text=self.mock_limit_twice_response) with patch.object(time, 'sleep', wraps=time.sleep) as sleepmock: self.get_api_response(self.first_index) self.assertEqual(sleepmock.call_count, 2) class HttpSimpleListerTester(HttpListerTesterBase, abc.ABC): """Base testing class for subclass of :class:`swh.lister.core.simple)_lister.SimpleLister` See :class:`swh.lister.pypi.tests.test_lister` for an example of how to customize for a specific listing service. """ entries = AbstractAttribute('Number of results in good response') PAGE = AbstractAttribute("The server api's unique page to retrieve and " "parse for information") def get_fl(self, override_config=None): """Retrieve an instance of fake lister (fl). """ if override_config or self.fl is None: self.fl = self.Lister( override_config=override_config) self.fl.INITIAL_BACKOFF = 1 self.fl.reset_backoff() return self.fl def mock_response(self, request, context): self.fl.reset_backoff() self.rate_limit = 1 context.status_code = 200 custom_headers = self.response_headers(request) context.headers.update(custom_headers) response_file = self.good_api_response_file with open('swh/lister/%s/tests/%s' % (self.lister_subdir, response_file), 'r', encoding='utf-8') as r: return r.read() @requests_mock.Mocker() def test_api_request(self, http_mocker): """Test API request for rate limit handling """ http_mocker.get(self.PAGE, text=self.mock_limit_twice_response) with patch.object(time, 'sleep', wraps=time.sleep) as sleepmock: self.get_api_response(0) self.assertEqual(sleepmock.call_count, 2) @requests_mock.Mocker() def test_model_map(self, http_mocker): """Check if all the keys of model are present in the model created by the `transport_response_simplified` """ http_mocker.get(self.PAGE, text=self.mock_response) fl = self.get_fl() li = fl.list_packages(self.get_api_response(0)) li = fl.transport_response_simplified(li) di = li[0] self.assertIsInstance(di, dict) pubs = [k for k in vars(fl.MODEL).keys() if not k.startswith('_')] for k in pubs: if k not in ['last_seen', 'task_id', 'id']: self.assertIn(k, di) @requests_mock.Mocker() def test_repos_list(self, http_mocker): """Test the number of packages listed by the lister """ http_mocker.get(self.PAGE, text=self.mock_response) li = self.get_fl().list_packages( self.get_api_response(0) ) self.assertIsInstance(li, list) self.assertEqual(len(li), self.entries)