Handle empty passwords in URL credentials

Closes #242

README.rst

@@ -1272,10 +1272,11 @@ Changelog
     * Added ``--cert`` and ``--certkey`` parameters to specify a client side
       certificate and private key for SSL
     * Improved unicode support.
-    * Fixed ``User-Agent`` overwriting when used within a session.
     * Switched from ``unittest`` to ``pytest``.
     * Various test suite improvements.
     * Added `CONTRIBUTING`_.
+    * Fixed ``User-Agent`` overwriting when used within a session.
+    * Fixed handling of empty passwords in URL credentials.
 * `0.8.0`_ (2014-01-25)
     * Added ``field=@file.txt`` and ``field:=@file.json`` for embedding
       the contents of text and JSON files into request data.

httpie/input.py

@@ -211,7 +211,8 @@ def _process_auth(self):
 
         elif url.username is not None:
             # Handle http://username:password@hostname/
-            username, password = url.username, url.password
+            username = url.username
+            password = url.password or ''
             self.args.auth = AuthCredentials(
                 key=username,
                 value=password,

tests/test_auth.py

@@ -2,8 +2,9 @@
 import requests
 import pytest
 
-from utils import http, add_auth, HTTP_OK
+from utils import http, add_auth, HTTP_OK, TestEnvironment
 import httpie.input
+import httpie.cli
 
 
 class TestAuth:
@@ -44,3 +45,18 @@ def test_credentials_in_url_auth_flag_has_priority(self, httpbin):
         r = http('--auth=user:password', 'GET', url)
         assert HTTP_OK in r
         assert r.json == {'authenticated': True, 'user': 'user'}
+
+    @pytest.mark.parametrize('url', [
+        'username@example.org',
+        'username:@example.org',
+    ])
+    def test_only_username_in_url(self, url):
+        """
+        https://github.com/jakubroztocil/httpie/issues/242
+
+        """
+        args = httpie.cli.parser.parse_args(args=[url], env=TestEnvironment())
+        assert args.auth
+        assert args.auth.key == 'username'
+        assert args.auth.value == ''
+