cron_servlet_test.py revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7
1#!/usr/bin/env python 2# Copyright 2013 The Chromium Authors. All rights reserved. 3# Use of this source code is governed by a BSD-style license that can be 4# found in the LICENSE file. 5 6import unittest 7 8from appengine_wrappers import GetAppVersion 9from app_yaml_helper import AppYamlHelper 10from content_providers import IgnoreMissingContentProviders 11from cron_servlet import CronServlet 12from empty_dir_file_system import EmptyDirFileSystem 13from extensions_paths import ( 14 APP_YAML, CONTENT_PROVIDERS, EXTENSIONS, PUBLIC_TEMPLATES, SERVER2, 15 STATIC_DOCS) 16from gcs_file_system_provider import CloudStorageFileSystemProvider 17from github_file_system_provider import GithubFileSystemProvider 18from host_file_system_provider import HostFileSystemProvider 19from local_file_system import LocalFileSystem 20from mock_file_system import MockFileSystem 21from servlet import Request 22from test_branch_utility import TestBranchUtility 23from test_file_system import MoveTo, TestFileSystem 24from test_util import EnableLogging, ReadFile 25 26 27# NOTE(kalman): The ObjectStore created by the CronServlet is backed onto our 28# fake AppEngine memcache/datastore, so the tests aren't isolated. Of course, 29# if the host file systems have different identities, they will be, sort of. 30class _TestDelegate(CronServlet.Delegate): 31 def __init__(self, create_file_system): 32 self.file_systems = [] 33 # A callback taking a revision and returning a file system. 34 self._create_file_system = create_file_system 35 self._app_version = GetAppVersion() 36 37 def CreateBranchUtility(self, object_store_creator): 38 return TestBranchUtility.CreateWithCannedData() 39 40 def CreateHostFileSystemProvider(self, 41 object_store_creator, 42 max_trunk_revision=None): 43 def constructor(branch=None, revision=None): 44 file_system = self._create_file_system(revision) 45 self.file_systems.append(file_system) 46 return file_system 47 return HostFileSystemProvider(object_store_creator, 48 max_trunk_revision=max_trunk_revision, 49 constructor_for_test=constructor) 50 51 def CreateGithubFileSystemProvider(self, object_store_creator): 52 return GithubFileSystemProvider.ForEmpty() 53 54 def CreateGCSFileSystemProvider(self, object_store_creator): 55 return CloudStorageFileSystemProvider.ForEmpty() 56 57 def GetAppVersion(self): 58 return self._app_version 59 60 # (non-Delegate method). 61 def SetAppVersion(self, app_version): 62 self._app_version = app_version 63 64class CronServletTest(unittest.TestCase): 65 @EnableLogging('info') 66 def testEverything(self): 67 # All these tests are dependent (see above comment) so lump everything in 68 # the one test. 69 delegate = _TestDelegate(lambda _: MockFileSystem(LocalFileSystem.Create())) 70 71 # Test that the cron runs successfully. 72 response = CronServlet(Request.ForTest('trunk'), 73 delegate_for_test=delegate).Get() 74 self.assertEqual(200, response.status) 75 76 # Save the file systems created, start with a fresh set for the next run. 77 first_run_file_systems = delegate.file_systems[:] 78 delegate.file_systems[:] = [] 79 80 # When re-running, all file systems should be Stat()d the same number of 81 # times, but the second round shouldn't have been re-Read() since the 82 # Stats haven't changed. 83 response = CronServlet(Request.ForTest('trunk'), 84 delegate_for_test=delegate).Get() 85 self.assertEqual(200, response.status) 86 87 self.assertEqual(len(first_run_file_systems), len(delegate.file_systems)) 88 for i, second_run_file_system in enumerate(delegate.file_systems): 89 self.assertTrue(*second_run_file_system.CheckAndReset( 90 read_count=0, 91 stat_count=first_run_file_systems[i].GetStatCount())) 92 93 @IgnoreMissingContentProviders 94 def testSafeRevision(self): 95 test_data = { 96 'api': { 97 '_api_features.json': '{}', 98 '_manifest_features.json': '{}', 99 '_permission_features.json': '{}', 100 }, 101 'docs': { 102 'examples': { 103 'examples.txt': 'examples.txt contents' 104 }, 105 'server2': { 106 'app.yaml': AppYamlHelper.GenerateAppYaml('2-0-8') 107 }, 108 'static': { 109 'static.txt': 'static.txt contents' 110 }, 111 'templates': { 112 'private': { 113 'table_of_contents.html': 'table_of_contents.html contents', 114 }, 115 'public': { 116 'apps': { 117 'storage.html': '<h1>storage.html</h1> contents' 118 }, 119 'extensions': { 120 'storage.html': '<h1>storage.html</h1> contents' 121 }, 122 }, 123 'json': { 124 'chrome_sidenav.json': '{}', 125 'content_providers.json': ReadFile(CONTENT_PROVIDERS), 126 'manifest.json': '{}', 127 'permissions.json': '{}', 128 'strings.json': '{}', 129 'whats_new.json': '{}', 130 }, 131 } 132 } 133 } 134 135 updates = [] 136 137 def app_yaml_update(version): 138 return MoveTo(SERVER2, { 139 'app.yaml': AppYamlHelper.GenerateAppYaml(version) 140 }) 141 def storage_html_update(update): 142 return MoveTo(PUBLIC_TEMPLATES, { 143 'apps': {'storage.html': update} 144 }) 145 def static_txt_update(update): 146 return MoveTo(STATIC_DOCS, { 147 'static.txt': update 148 }) 149 150 storage_html_path = PUBLIC_TEMPLATES + 'apps/storage.html' 151 static_txt_path = STATIC_DOCS + 'static.txt' 152 153 def create_file_system(revision=None): 154 '''Creates a MockFileSystem at |revision| by applying that many |updates| 155 to it. 156 ''' 157 mock_file_system = MockFileSystem( 158 TestFileSystem(test_data, relative_to=EXTENSIONS)) 159 updates_for_revision = ( 160 updates if revision is None else updates[:int(revision)]) 161 for update in updates_for_revision: 162 mock_file_system.Update(update) 163 return mock_file_system 164 165 delegate = _TestDelegate(create_file_system) 166 delegate.SetAppVersion('2-0-8') 167 168 file_systems = delegate.file_systems 169 170 # No updates applied yet. 171 CronServlet(Request.ForTest('trunk'), delegate_for_test=delegate).Get() 172 self.assertEqual(AppYamlHelper.GenerateAppYaml('2-0-8'), 173 file_systems[-1].ReadSingle(APP_YAML).Get()) 174 self.assertEqual('<h1>storage.html</h1> contents', 175 file_systems[-1].ReadSingle(storage_html_path).Get()) 176 177 # Apply updates to storage.html. 178 updates.append(storage_html_update('interim contents')) 179 updates.append(storage_html_update('<h1>new</h1> contents')) 180 181 CronServlet(Request.ForTest('trunk'), delegate_for_test=delegate).Get() 182 self.assertEqual(AppYamlHelper.GenerateAppYaml('2-0-8'), 183 file_systems[-1].ReadSingle(APP_YAML).Get()) 184 self.assertEqual('<h1>new</h1> contents', 185 file_systems[-1].ReadSingle(storage_html_path).Get()) 186 187 # Apply several updates to storage.html and app.yaml. The file system 188 # should be pinned at the version before app.yaml changed. 189 updates.append(storage_html_update('<h1>stuck here</h1> contents')) 190 191 double_update = storage_html_update('<h1>newer</h1> contents') 192 double_update.update(app_yaml_update('2-0-10')) 193 updates.append(double_update) 194 195 updates.append(storage_html_update('never gonna reach here')) 196 197 CronServlet(Request.ForTest('trunk'), delegate_for_test=delegate).Get() 198 self.assertEqual(AppYamlHelper.GenerateAppYaml('2-0-8'), 199 file_systems[-1].ReadSingle(APP_YAML).Get()) 200 self.assertEqual('<h1>stuck here</h1> contents', 201 file_systems[-1].ReadSingle(storage_html_path).Get()) 202 203 # Further pushes to storage.html will keep it pinned. 204 updates.append(storage_html_update('<h1>y</h1> u not update!')) 205 206 CronServlet(Request.ForTest('trunk'), delegate_for_test=delegate).Get() 207 self.assertEqual(AppYamlHelper.GenerateAppYaml('2-0-8'), 208 file_systems[-1].ReadSingle(APP_YAML).Get()) 209 self.assertEqual('<h1>stuck here</h1> contents', 210 file_systems[-1].ReadSingle(storage_html_path).Get()) 211 212 # Likewise app.yaml. 213 updates.append(app_yaml_update('2-1-0')) 214 215 CronServlet(Request.ForTest('trunk'), delegate_for_test=delegate).Get() 216 self.assertEqual(AppYamlHelper.GenerateAppYaml('2-0-8'), 217 file_systems[-1].ReadSingle(APP_YAML).Get()) 218 self.assertEqual('<h1>stuck here</h1> contents', 219 file_systems[-1].ReadSingle(storage_html_path).Get()) 220 221 # And updates to other content won't happen either. 222 updates.append(static_txt_update('important content!')) 223 224 CronServlet(Request.ForTest('trunk'), delegate_for_test=delegate).Get() 225 self.assertEqual(AppYamlHelper.GenerateAppYaml('2-0-8'), 226 file_systems[-1].ReadSingle(APP_YAML).Get()) 227 self.assertEqual('<h1>stuck here</h1> contents', 228 file_systems[-1].ReadSingle(storage_html_path).Get()) 229 self.assertEqual('static.txt contents', 230 file_systems[-1].ReadSingle(static_txt_path).Get()) 231 232 # Lastly - when the app version changes, everything should no longer be 233 # pinned. 234 delegate.SetAppVersion('2-1-0') 235 CronServlet(Request.ForTest('trunk'), delegate_for_test=delegate).Get() 236 self.assertEqual(AppYamlHelper.GenerateAppYaml('2-1-0'), 237 file_systems[-1].ReadSingle(APP_YAML).Get()) 238 self.assertEqual('<h1>y</h1> u not update!', 239 file_systems[-1].ReadSingle(storage_html_path).Get()) 240 self.assertEqual('important content!', 241 file_systems[-1].ReadSingle(static_txt_path).Get()) 242 243 244if __name__ == '__main__': 245 unittest.main() 246