feat: add close method (#14)

Add `close` so `AuthorizedHttp`'s interface matches `httplib2.Http`. For googleapis/google-api-python-client#1046

https://github.com/httplib2/httplib2/blob/595e248d0958c00e83cb28f136a2a54772772b50/python3/httplib2/__init__.py#L1498

google_auth_httplib2.py

@@ -184,6 +184,10 @@ def __init__(
         # credentials.refresh).
         self._request = Request(self.http)
 
+    def close(self):
+        """Calls httplib2's Http.close"""
+        self.http.close()
+
     def request(
         self,
         uri,

setup.py

@@ -16,10 +16,9 @@
 
 from setuptools import setup
 
-
 version = "0.0.4"
 
-DEPENDENCIES = ["google-auth", "httplib2 >= 0.9.1", "six"]
+DEPENDENCIES = ["google-auth", "httplib2 >= 0.15.0", "six"]
 
 
 with io.open("README.rst", "r") as fh:

tests/test_google_auth_httplib2.py

@@ -102,6 +102,13 @@ def test_authed_http_defaults(self):
         assert authed_http.credentials == mock.sentinel.credentials
         assert isinstance(authed_http.http, httplib2.Http)
 
+    def test_close(self):
+        with mock.patch("httplib2.Http.close", autospec=True) as close:
+            authed_http = google_auth_httplib2.AuthorizedHttp(mock.sentinel.credentials)
+            authed_http.close()
+
+            close.assert_called_once()
+
     def test_connections(self):
         authed_http = google_auth_httplib2.AuthorizedHttp(mock.sentinel.credentials)