Updates to unit tests

Author: mattbanister

README.md

@@ -27,3 +27,10 @@ version = 2
 
 response = diffbot.request(url, token, api, version=2)
 ```
+
+Testing
+------------
+
+Unit and integration tests are configured to run using nose.  From the project directory, simply run:
+
+    $ nosetests

test.py

@@ -0,0 +1,49 @@
+import os
+import urlparse
+import unittest
+import simplejson
+import logging
+import requests
+from mock import Mock, patch
+
+from client import DiffbotClient
+
+
+logger = logging.getLogger(__name__)
+
+
+def fake_get(url, params):
+    path = urlparse.urlparse(url).path
+    path_tuple = os.path.split(path)
+    api = path_tuple[len(path_tuple) - 1]
+    resource_file = os.path.normpath('tests/test_fixtures/%s.json' % api)
+    with open(resource_file, mode='rb') as file:
+        json = file.read()
+    r = requests.Response()
+    r.status_code = 200
+    r._content = json
+    return r
+
+
+class DiffbotClientUnitTest(unittest.TestCase):
+
+    def setUp(self):
+        self.patcher = patch('client.requests.get', fake_get)
+        self.patcher.start()
+        self.client = DiffbotClient()
+
+    def tearDown(self):
+        self.patcher.stop()
+
+    def test_request_for_article(self):
+        url = "http://shichuan.github.io/javascript-patterns/"
+        token = "3c66f28f72ea40c1b02e6a4cc195b07e"
+        api = "article"
+        version = 2
+        response = self.client.request(url, token, api, version=version)
+        self.assertIn('text', response)
+        self.assertEqual(response['meta']['title'], 'JavaScript Patterns')
+
+
+if __name__ == '__main__':
+    unittest.main()