Doc server manifest page generation

chrome/common/extensions/docs/server2/manifest_data_source_test.py

+#!/usr/bin/env python
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import types
+import unittest
+
+from manifest_data_source import ManifestDataSource
+
+class MockCompiledFileSystem(object):
+  class Factory(object):

[not at google - send to devlin, 2013/05/10 04:14:14]

It doesn't look like having a Factory here achieves anything. Constructor is
fine.

[jshumway, 2013/05/11 02:37:08]

Replaced all of this stuff with the project's test fixtures.

+    def Create(self, _, __):
+      return MockCompiledFileSystem()
+
+  def GetFromFile(self, path):
+    if path == 'features_path':
+      # Our example _manifest_features.json.
+      return {
+        'req0': {
+          'channel': 'stable',
+          'extension_types': ['packaged_app', 'extension']
+        },
+        'req1': {
+          'channel': 'dev',
+          'extension_types': 'all'
+        },
+        'opt0': {
+          'channel': 'trunk',
+          'extension_types': ['extension']
+        },
+        'opt1': {
+          'channel': 'stable',
+          'extension_types': ['hosted_app']
+        },
+        'free0': {
+          'channel': 'stable',
+          'extension_types': ['platform_app']
+        },
+        'free1': {
+          'channel': 'dev',
+          'extension_types': ['packaged_app', 'hosted_app', 'extension']
+        }
+      }
+
+def LoadManifestData(self, _):
+  # Our example manifest.json.
+  return {
+    'required': [
+      {'name': 'req0'},
+      {'name': 'req1'}
+    ],
+    'optional': [
+      {'name': 'opt0'},
+      {'name': 'opt1'}
+    ]
+  }
+def Nothing(self, _):
+  # Do nothing. We don't care what Apply{Apps,Extensions}Transformations methods
+  # do because they change depending on data.
+  pass
+
+class ManifestDataSourceTest(unittest.TestCase):
+  def testCreateManifestData(self):
+    expected_extensions = {
+      'required': [
+        {'name': 'req0'},
+        {'name': 'req1'}
+      ],
+      'optional': [
+        {'name': 'free1'},
+      ]
+    }
+
+    expected_apps = {
+      'required': [
+        {'name': 'req0'},
+        {'name': 'req1'}
+      ],
+      'optional': [
+        {'name': 'opt1'},
+        {'name': 'free0'},
+        {'name': 'free1'}
+      ]
+    }
+
+    mds = ManifestDataSource(
+      MockCompiledFileSystem.Factory(), 'manifest_path', 'features_path',

[not at google - send to devlin, 2013/05/10 04:14:14]

4 space

[jshumway, 2013/05/11 02:37:08]

Done.

+      'dev')
+
+    # Prevent an actual file load by patching in our load function.

[not at google - send to devlin, 2013/05/10 04:14:14]

cool test data, but the test object store / file system / etc infrastructure
should be powerful enough to not require overriding private methods.

E.g. you should use a TestFileSystem with data pointing at the right place
(perhaps you need to write the dicts to JSON which the data source expects),
like

file_system = TestFileSystem({
  'manifest.json': json.dumps(...)
  '_manifest_features.jon': json.dumps(...)
})
compiled_fs_factory = CompiledFileSystem.Factory(
    file_system, ObjectStoreCreator.ForTest())
mds = ManifestDataSource(compiled_fs_factory, 'manifest.json',
'_manifest_features.json', 'dev')

[jshumway, 2013/05/11 02:37:08]

Fixed them up. I still override the two Apply*Transformations functions which
shouldn't be part of the tests because they don't have a specification/change on
the fly depending on how we want to change the content.

Thanks for the code example, it saved me a lot of time trying to figure out the
best way to set up test fixtures.

+    mds._LoadManifestData = types.MethodType(LoadManifestData, mds)
+    mds._ApplyAppsTransformations = types.MethodType(Nothing, mds)
+    mds._ApplyExtensionsTransformations = types.MethodType(Nothing, mds)
+
+    results = mds._CreateManifestData(None, None)
+
+    self.assertEqual(expected_extensions, dict(results['extensions']))
+    self.assertEqual(expected_apps, dict(results['apps']))
+
+if __name__ == '__main__':
+  unittest.main()