Quickstart tests [(#569)](GoogleCloudPlatform/python-docs-samples#569)

* Add tests for quickstarts
* Update secrets

samples/snippets/quickstart.py

@@ -27,16 +27,15 @@ def run_quickstart():
     translate_client = translate.Client(api_key)
 
     # The text to translate
-    text = 'Hello, world!'
+    text = u'Hello, world!'
     # The target language
     target = 'ru'
 
     # Translates some text into Russian
     translation = translate_client.translate(text, target_language=target)
 
-    print('Text: {}'.format(text))
-    print('Translation: {}'.format(
-        translation['translatedText'].encode('utf-8')))
+    print(u'Text: {}'.format(text))
+    print(u'Translation: {}'.format(translation['translatedText']))
     # [END translate_quickstart]
 
 

samples/snippets/quickstart_test.py

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# 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.
+
+from google.cloud import translate
+import mock
+import pytest
+
+import quickstart
+
+
+@pytest.fixture
+def mock_client(cloud_config):
+    original_client_ctor = translate.Client
+
+    def new_client_ctor(api_key):
+        # Strip api_key argument and replace with our api key.
+        return original_client_ctor(cloud_config.api_key)
+
+    with mock.patch(
+            'google.cloud.translate.Client',
+            side_effect=new_client_ctor):
+        yield
+
+
+def test_quickstart(mock_client, capsys):
+    quickstart.run_quickstart()
+    out, _ = capsys.readouterr()
+    assert u'Привет мир!' in out