[catapult] - Copy Telemetry's gsutilz over to third_party.

third_party/gsutil/third_party/protorpc/demos/tunes_db/server/datastore_test_util.py

Index: third_party/gsutil/third_party/protorpc/demos/tunes_db/server/datastore_test_util.py
diff --git a/third_party/gsutil/third_party/protorpc/demos/tunes_db/server/datastore_test_util.py b/third_party/gsutil/third_party/protorpc/demos/tunes_db/server/datastore_test_util.py
new file mode 100755
index 0000000000000000000000000000000000000000..25d6283063d35e56b6017c99f5b18c3dd8bcf5de
--- /dev/null
+++ b/third_party/gsutil/third_party/protorpc/demos/tunes_db/server/datastore_test_util.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+#
+# Copyright 2010 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import os
+
+from google.appengine.api import apiproxy_stub_map
+from google.appengine.api import datastore_file_stub
+from protorpc import test_util
+
+# DO NOT SUBMIT: Just letting reviewer know that most of this
+# came from apphosting/ext/api_testutil.py
+
+
+class DatastoreTest(test_util.TestCase):
+  """Base class for tests that require datastore."""
+
+  __apiproxy_initialized = False
+
+  def setUp(self):
+    """Set up the datastore."""
+    self.app_id = 'my-app'
+
+    # Set environment variable for app id.
+    os.environ['APPLICATION_ID'] = self.app_id
+
+    # Don't use the filesystem with this stub.
+    self.datastore_stub = datastore_file_stub.DatastoreFileStub(
+        self.app_id, None)
+
+    # Register stub.
+    self.ResetApiProxyStubMap()
+    apiproxy_stub_map.apiproxy.RegisterStub('datastore_v3', self.datastore_stub)
+
+  def ResetApiProxyStubMap(self):
+    """Reset the proxy stub-map.
+
+    Args:
+      force: When True, always reset the stubs regardless of their status.
+
+    Must be called before stubs can be configured.
+
+    Every time a new test is created, it is necessary to run with a brand new
+    stub.  The problem is that RegisterStub won't allow stubs to be replaced.
+    If the global instance is not reset, it raises an exception when a run a
+    new test gets run that wants to use a new stub.
+
+    Calling this method more than once per APITest instance will only cause
+    a new stub-map to be created once.  Therefore it is called automatically
+    during each Configure method.
+    """
+    if self.__apiproxy_initialized:
+      return
+    self.__apiproxy_initialized = True
+    apiproxy_stub_map.apiproxy = apiproxy_stub_map.GetDefaultAPIProxy()