Add public properties to google.oauth2.credentials.Credentials (#124)

Author: Jon Wayne Parrott

google/oauth2/credentials.py

@@ -68,6 +68,27 @@ def __init__(self, token, refresh_token=None, token_uri=None,
         self._client_id = client_id
         self._client_secret = client_secret
 
+    @property
+    def refresh_token(self):
+        """Optional[str]: The OAuth 2.0 refresh token."""
+        return self._refresh_token
+
+    @property
+    def token_uri(self):
+        """Optional[str]: The OAuth 2.0 authorization server's token endpoint
+        URI."""
+        return self._token_uri
+
+    @property
+    def client_id(self):
+        """Optional[str]: The OAuth 2.0 client ID."""
+        return self._client_id
+
+    @property
+    def client_secret(self):
+        """Optional[str]: The OAuth 2.0 client secret."""
+        return self._client_secret
+
     @property
     def requires_scopes(self):
         """False: OAuth 2.0 credentials have their scopes set when

tests/oauth2/test_credentials.py

@@ -41,6 +41,11 @@ def test_default_state(self):
         assert not self.credentials.expired
         # Scopes aren't required for these credentials
         assert not self.credentials.requires_scopes
+        # Test properties
+        assert self.credentials.refresh_token == self.REFRESH_TOKEN
+        assert self.credentials.token_uri == self.TOKEN_URI
+        assert self.credentials.client_id == self.CLIENT_ID
+        assert self.credentials.client_secret == self.CLIENT_SECRET
 
     def test_create_scoped(self):
         with pytest.raises(NotImplementedError):