src/chrome/common/extensions/docs/server2/availability_finder_test.py

   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 import os
   6 import sys
   7 import unittest
   8
   9 import api_schema_graph
  10 from availability_finder import AvailabilityFinder
  11 from branch_utility import BranchUtility, ChannelInfo
  12 from compiled_file_system import CompiledFileSystem
  13 from fake_host_file_system_provider import FakeHostFileSystemProvider
  14 from fake_url_fetcher import FakeUrlFetcher
  15 from host_file_system_iterator import HostFileSystemIterator
  16 from mock_function import MockFunction
  17 from object_store_creator import ObjectStoreCreator
  18 from test_data.canned_data import (CANNED_API_FILE_SYSTEM_DATA, CANNED_BRANCHES)
  19 from test_data.object_level_availability.tabs import TABS_SCHEMA_BRANCHES
  20 from test_util import Server2Path
  21
  22
  23 TABS_UNMODIFIED_VERSIONS = (16, 20, 23, 24)
  24
  25 class AvailabilityFinderTest(unittest.TestCase):
  26
  27   def setUp(self):
  28     self._branch_utility = BranchUtility(
  29         os.path.join('branch_utility', 'first.json'),
  30         os.path.join('branch_utility', 'second.json'),
  31         FakeUrlFetcher(Server2Path('test_data')),
  32         ObjectStoreCreator.ForTest())
  33     api_fs_creator = FakeHostFileSystemProvider(CANNED_API_FILE_SYSTEM_DATA)
  34     self._node_fs_creator = FakeHostFileSystemProvider(TABS_SCHEMA_BRANCHES)
  35
  36     def create_availability_finder(host_fs_creator):
  37       test_object_store = ObjectStoreCreator.ForTest()
  38       return AvailabilityFinder(
  39           self._branch_utility,
  40           CompiledFileSystem.Factory(test_object_store),
  41           HostFileSystemIterator(host_fs_creator,
  42                                  self._branch_utility),
  43           host_fs_creator.GetTrunk(),
  44           test_object_store)
  45
  46     self._avail_finder = create_availability_finder(api_fs_creator)
  47     self._node_avail_finder = create_availability_finder(self._node_fs_creator)
  48
  49     # Imitate the actual SVN file system by incrementing the stats for paths
  50     # where an API schema has changed.
  51     last_stat = type('last_stat', (object,), {'val': 0})
  52
  53     def stat_paths(file_system, channel_info):
  54       if channel_info.version not in TABS_UNMODIFIED_VERSIONS:
  55         last_stat.val += 1
  56       # HACK: |file_system| is a MockFileSystem backed by a TestFileSystem.
  57       # Increment the TestFileSystem stat count.
  58       file_system._file_system.IncrementStat(by=last_stat.val)
  59       # Continue looping. The iterator will stop after 'trunk' automatically.
  60       return True
  61
  62     # Use the HostFileSystemIterator created above to change global stat values
  63     # for the TestFileSystems that it creates.
  64     self._node_avail_finder._file_system_iterator.Ascending(
  65         # The earliest version represented with the tabs' test data is 13.
  66         self._branch_utility.GetStableChannelInfo(13),
  67         stat_paths)
  68
  69   def testGraphOptimization(self):
  70     # Keep track of how many times the APISchemaGraph constructor is called.
  71     original_constructor = api_schema_graph.APISchemaGraph
  72     mock_constructor = MockFunction(original_constructor)
  73     api_schema_graph.APISchemaGraph = mock_constructor
  74
  75     try:
  76       # The test data includes an extra branch where the API does not exist.
  77       num_versions = len(TABS_SCHEMA_BRANCHES) - 1
  78       # We expect an APISchemaGraph to be created only when an API schema file
  79       # has different stat data from the previous version's schema file.
  80       num_graphs_created = num_versions - len(TABS_UNMODIFIED_VERSIONS)
  81
  82       # Run the logic for object-level availability for an API.
  83       self._node_avail_finder.GetApiNodeAvailability('tabs')
  84
  85       self.assertTrue(*api_schema_graph.APISchemaGraph.CheckAndReset(
  86           num_graphs_created))
  87     finally:
  88       # Ensure that the APISchemaGraph constructor is reset to be the original
  89       # constructor.
  90       api_schema_graph.APISchemaGraph = original_constructor
  91
  92   def testGetApiAvailability(self):
  93     # Key: Using 'channel' (i.e. 'beta') to represent an availability listing
  94     # for an API in a _features.json file, and using |channel| (i.e. |dev|) to
  95     # represent the development channel, or phase of development, where an API's
  96     # availability is being checked.
  97
  98     # Testing APIs with predetermined availability.
  99     self.assertEqual(
 100         ChannelInfo('trunk', 'trunk', 'trunk'),
 101         self._avail_finder.GetApiAvailability('jsonTrunkAPI'))
 102     self.assertEqual(
 103         ChannelInfo('dev', CANNED_BRANCHES[28], 28),
 104         self._avail_finder.GetApiAvailability('jsonDevAPI'))
 105     self.assertEqual(
 106         ChannelInfo('beta', CANNED_BRANCHES[27], 27),
 107         self._avail_finder.GetApiAvailability('jsonBetaAPI'))
 108     self.assertEqual(
 109         ChannelInfo('stable', CANNED_BRANCHES[20], 20),
 110         self._avail_finder.GetApiAvailability('jsonStableAPI'))
 111
 112     # Testing a whitelisted API.
 113     self.assertEquals(
 114         ChannelInfo('beta', CANNED_BRANCHES[27], 27),
 115         self._avail_finder.GetApiAvailability('declarativeWebRequest'))
 116
 117     # Testing APIs found only by checking file system existence.
 118     self.assertEquals(
 119         ChannelInfo('stable', CANNED_BRANCHES[23], 23),
 120         self._avail_finder.GetApiAvailability('windows'))
 121     self.assertEquals(
 122         ChannelInfo('stable', CANNED_BRANCHES[18], 18),
 123         self._avail_finder.GetApiAvailability('tabs'))
 124     self.assertEquals(
 125         ChannelInfo('stable', CANNED_BRANCHES[18], 18),
 126         self._avail_finder.GetApiAvailability('input.ime'))
 127
 128     # Testing API channel existence for _api_features.json.
 129     # Listed as 'dev' on |beta|, 'dev' on |dev|.
 130     self.assertEquals(
 131         ChannelInfo('dev', CANNED_BRANCHES[28], 28),
 132         self._avail_finder.GetApiAvailability('systemInfo.stuff'))
 133     # Listed as 'stable' on |beta|.
 134     self.assertEquals(
 135         ChannelInfo('beta', CANNED_BRANCHES[27], 27),
 136         self._avail_finder.GetApiAvailability('systemInfo.cpu'))
 137
 138     # Testing API channel existence for _manifest_features.json.
 139     # Listed as 'trunk' on all channels.
 140     self.assertEquals(
 141         ChannelInfo('trunk', 'trunk', 'trunk'),
 142         self._avail_finder.GetApiAvailability('sync'))
 143     # No records of API until |trunk|.
 144     self.assertEquals(
 145         ChannelInfo('trunk', 'trunk', 'trunk'),
 146         self._avail_finder.GetApiAvailability('history'))
 147     # Listed as 'dev' on |dev|.
 148     self.assertEquals(
 149         ChannelInfo('dev', CANNED_BRANCHES[28], 28),
 150         self._avail_finder.GetApiAvailability('storage'))
 151     # Stable in _manifest_features and into pre-18 versions.
 152     self.assertEquals(
 153         ChannelInfo('stable', CANNED_BRANCHES[8], 8),
 154         self._avail_finder.GetApiAvailability('pageAction'))
 155
 156     # Testing API channel existence for _permission_features.json.
 157     # Listed as 'beta' on |trunk|.
 158     self.assertEquals(
 159         ChannelInfo('trunk', 'trunk', 'trunk'),
 160         self._avail_finder.GetApiAvailability('falseBetaAPI'))
 161     # Listed as 'trunk' on |trunk|.
 162     self.assertEquals(
 163         ChannelInfo('trunk', 'trunk', 'trunk'),
 164         self._avail_finder.GetApiAvailability('trunkAPI'))
 165     # Listed as 'trunk' on all development channels.
 166     self.assertEquals(
 167         ChannelInfo('trunk', 'trunk', 'trunk'),
 168         self._avail_finder.GetApiAvailability('declarativeContent'))
 169     # Listed as 'dev' on all development channels.
 170     self.assertEquals(
 171         ChannelInfo('dev', CANNED_BRANCHES[28], 28),
 172         self._avail_finder.GetApiAvailability('bluetooth'))
 173     # Listed as 'dev' on |dev|.
 174     self.assertEquals(
 175         ChannelInfo('dev', CANNED_BRANCHES[28], 28),
 176         self._avail_finder.GetApiAvailability('cookies'))
 177     # Treated as 'stable' APIs.
 178     self.assertEquals(
 179         ChannelInfo('stable', CANNED_BRANCHES[24], 24),
 180         self._avail_finder.GetApiAvailability('alarms'))
 181     self.assertEquals(
 182         ChannelInfo('stable', CANNED_BRANCHES[21], 21),
 183         self._avail_finder.GetApiAvailability('bookmarks'))
 184
 185     # Testing older API existence using extension_api.json.
 186     self.assertEquals(
 187         ChannelInfo('stable', CANNED_BRANCHES[6], 6),
 188         self._avail_finder.GetApiAvailability('menus'))
 189     self.assertEquals(
 190         ChannelInfo('stable', CANNED_BRANCHES[5], 5),
 191         self._avail_finder.GetApiAvailability('idle'))
 192
 193     # Switches between _features.json files across branches.
 194     # Listed as 'trunk' on all channels, in _api, _permission, or _manifest.
 195     self.assertEquals(
 196         ChannelInfo('trunk', 'trunk', 'trunk'),
 197         self._avail_finder.GetApiAvailability('contextMenus'))
 198     # Moves between _permission and _manifest as file system is traversed.
 199     self.assertEquals(
 200         ChannelInfo('stable', CANNED_BRANCHES[23], 23),
 201         self._avail_finder.GetApiAvailability('systemInfo.display'))
 202     self.assertEquals(
 203         ChannelInfo('stable', CANNED_BRANCHES[17], 17),
 204         self._avail_finder.GetApiAvailability('webRequest'))
 205
 206     # Mid-upgrade cases:
 207     # Listed as 'dev' on |beta| and 'beta' on |dev|.
 208     self.assertEquals(
 209         ChannelInfo('dev', CANNED_BRANCHES[28], 28),
 210         self._avail_finder.GetApiAvailability('notifications'))
 211     # Listed as 'beta' on |stable|, 'dev' on |beta| ... until |stable| on trunk.
 212     self.assertEquals(
 213         ChannelInfo('trunk', 'trunk', 'trunk'),
 214         self._avail_finder.GetApiAvailability('events'))
 215
 216   def testGetApiNodeAvailability(self):
 217     # Allow the LookupResult constructions below to take just one line.
 218     lookup_result = api_schema_graph.LookupResult
 219     availability_graph = self._node_avail_finder.GetApiNodeAvailability('tabs')
 220
 221     self.assertEquals(
 222         lookup_result(True, self._branch_utility.GetChannelInfo('trunk')),
 223         availability_graph.Lookup('tabs', 'properties',
 224                                   'fakeTabsProperty3'))
 225     self.assertEquals(
 226         lookup_result(True, self._branch_utility.GetChannelInfo('dev')),
 227         availability_graph.Lookup('tabs', 'events', 'onActivated',
 228                                   'parameters', 'activeInfo', 'properties',
 229                                   'windowId'))
 230     self.assertEquals(
 231         lookup_result(True, self._branch_utility.GetChannelInfo('dev')),
 232         availability_graph.Lookup('tabs', 'events', 'onUpdated', 'parameters',
 233                                   'tab'))
 234     self.assertEquals(
 235         lookup_result(True, self._branch_utility.GetChannelInfo('beta')),
 236         availability_graph.Lookup('tabs', 'events','onActivated'))
 237     self.assertEquals(
 238         lookup_result(True, self._branch_utility.GetChannelInfo('beta')),
 239         availability_graph.Lookup('tabs', 'functions', 'get', 'parameters',
 240                                   'tabId'))
 241     self.assertEquals(
 242         lookup_result(True, self._branch_utility.GetChannelInfo('stable')),
 243         availability_graph.Lookup('tabs', 'types', 'InjectDetails',
 244                                   'properties', 'code'))
 245     self.assertEquals(
 246         lookup_result(True, self._branch_utility.GetChannelInfo('stable')),
 247         availability_graph.Lookup('tabs', 'types', 'InjectDetails',
 248                                   'properties', 'file'))
 249     self.assertEquals(
 250         lookup_result(True, self._branch_utility.GetStableChannelInfo(25)),
 251         availability_graph.Lookup('tabs', 'types', 'InjectDetails'))
 252
 253     # Nothing new in version 24 or 23.
 254
 255     self.assertEquals(
 256         lookup_result(True, self._branch_utility.GetStableChannelInfo(22)),
 257         availability_graph.Lookup('tabs', 'types', 'Tab', 'properties',
 258                                   'windowId'))
 259     self.assertEquals(
 260         lookup_result(True, self._branch_utility.GetStableChannelInfo(21)),
 261         availability_graph.Lookup('tabs', 'types', 'Tab', 'properties',
 262                                   'selected'))
 263
 264     # Nothing new in version 20.
 265
 266     self.assertEquals(
 267         lookup_result(True, self._branch_utility.GetStableChannelInfo(19)),
 268         availability_graph.Lookup('tabs', 'functions', 'getCurrent'))
 269     self.assertEquals(
 270         lookup_result(True, self._branch_utility.GetStableChannelInfo(18)),
 271         availability_graph.Lookup('tabs', 'types', 'Tab', 'properties',
 272                                   'index'))
 273     self.assertEquals(
 274         lookup_result(True, self._branch_utility.GetStableChannelInfo(17)),
 275         availability_graph.Lookup('tabs', 'events', 'onUpdated', 'parameters',
 276                                   'changeInfo'))
 277
 278     # Nothing new in version 16.
 279
 280     self.assertEquals(
 281         lookup_result(True, self._branch_utility.GetStableChannelInfo(15)),
 282         availability_graph.Lookup('tabs', 'properties',
 283                                   'fakeTabsProperty2'))
 284
 285     # Everything else is available at the API's release, version 14 here.
 286     self.assertEquals(
 287         lookup_result(True, self._branch_utility.GetStableChannelInfo(14)),
 288         availability_graph.Lookup('tabs', 'types', 'Tab'))
 289     self.assertEquals(
 290         lookup_result(True, self._branch_utility.GetStableChannelInfo(14)),
 291         availability_graph.Lookup('tabs', 'types', 'Tab',
 292                                   'properties', 'url'))
 293     self.assertEquals(
 294         lookup_result(True, self._branch_utility.GetStableChannelInfo(14)),
 295         availability_graph.Lookup('tabs', 'properties',
 296                                   'fakeTabsProperty1'))
 297     self.assertEquals(
 298         lookup_result(True, self._branch_utility.GetStableChannelInfo(14)),
 299         availability_graph.Lookup('tabs', 'functions', 'get', 'parameters',
 300                                   'callback'))
 301     self.assertEquals(
 302         lookup_result(True, self._branch_utility.GetStableChannelInfo(14)),
 303         availability_graph.Lookup('tabs', 'events', 'onUpdated'))
 304
 305     # Test things that aren't available.
 306     self.assertEqual(lookup_result(False, None),
 307                      availability_graph.Lookup('tabs', 'types',
 308                                                'UpdateInfo'))
 309     self.assertEqual(lookup_result(False, None),
 310                      availability_graph.Lookup('tabs', 'functions', 'get',
 311                                                'parameters', 'callback',
 312                                                'parameters', 'tab', 'id'))
 313     self.assertEqual(lookup_result(False, None),
 314                      availability_graph.Lookup('functions'))
 315     self.assertEqual(lookup_result(False, None),
 316                      availability_graph.Lookup('events', 'onActivated',
 317                                                'parameters', 'activeInfo',
 318                                                'tabId'))
 319
 320
 321 if __name__ == '__main__':
 322   unittest.main()