Corrected output when the namespace prefix associated with a

  namespaced attribute is the empty string, as opposed to
  None. [bug=1915583]

1 files changed, 10 insertions, 0 deletions

diff --git a/bs4/tests/test_soup.py b/bs4/tests/test_soup.py
index 857eb41..f21edfa 100644
--- a/bs4/tests/test_soup.py
+++ b/bs4/tests/test_soup.py
@@ -688,9 +688,19 @@ class TestNamedspacedAttribute(SoupTest):
         a = NamespacedAttribute("xmlns", None)
         self.assertEqual(a, "xmlns")
 
+        a = NamespacedAttribute("xmlns", "")
+        self.assertEqual(a, "xmlns")
+
         a = NamespacedAttribute("xmlns")
         self.assertEqual(a, "xmlns")
         
+    def test_namespace_may_be_none_or_missing(self):
+        a = NamespacedAttribute(None, "tag")
+        self.assertEqual(a, "tag")
+        
+        a = NamespacedAttribute("", "tag")
+        self.assertEqual(a, "tag")
+        
     def test_attribute_is_equivalent_to_colon_separated_string(self):
         a = NamespacedAttribute("a", "b")
         self.assertEqual("a:b", a)