Example for replace_url

Author: bbayles

Diff for: README.rst

@@ -45,3 +45,5 @@ It also provides some higher level functions for parsing and manipulating URLs.
         'search': '?q=1',
         'hash': '#2'
     }
+    >>> ada_url.replace_url('http://example.org:80', protocol='https:')
+    'https://example.org/'

Diff for: ada_url/ada_adapter.py

@@ -304,7 +304,7 @@ def replace_url(s, **kwargs):
 
         for attr in URL_ATTRIBUTES:
             value = kwargs.get(attr)
-            if not value:
+            if value is None:
                 continue
 
             try:

Diff for: tests/test_ada_url.py

@@ -242,6 +242,12 @@ def test_replace_url(self):
                 actual = replace_url(s, **kwargs)
                 self.assertEqual(actual, expected)
 
+    def test_replace_blank(self):
+        s = 'https://user:[email protected]'
+        actual = replace_url(s, username='', password='')
+        expected = 'https://example.org/'
+        self.assertEqual(actual, expected)
+
     def test_replace_href(self):
         s = 'https://username:[email protected]:8080/'
         kwargs = {