Fix behavior with quoted attrs and spaces before the =.

mwparserfromhell/nodes/extras/attribute.py

@@ -47,12 +47,13 @@ class Attribute(StringMixIn):
         self._pad_after_eq = pad_after_eq
 
     def __unicode__(self):
-        base = self.pad_first + str(self.name) + self.pad_before_eq
+        result = self.pad_first + str(self.name) + self.pad_before_eq
         if self.value is not None:
+            result += "=" + self.pad_after_eq
             if self.quoted:
-                return base + '="' + self.pad_after_eq + str(self.value) + '"'
-            return base + "=" + self.pad_after_eq + str(self.value)
-        return base
+                return result + '"' + str(self.value) + '"'
+            return result + str(self.value)
+        return result
 
     def _set_padding(self, attr, value):
         """Setter for the value of a padding attribute."""

tests/test_attribute.py

@@ -38,6 +38,8 @@ class TestAttribute(TreeEqualityTestCase):
         self.assertEqual(" foo", str(node))
         node2 = Attribute(wraptext("foo"), wraptext("bar"))
         self.assertEqual(' foo="bar"', str(node2))
+        node3 = Attribute(wraptext("a"), wraptext("b"), True, "", " ", "   ")
+        self.assertEqual('a =   "b"', str(node3))
         node3 = Attribute(wraptext("a"), wraptext("b"), False, "", " ", "   ")
         self.assertEqual("a =   b", str(node3))
         node4 = Attribute(wraptext("a"), wrap([]), False, " ", "", " ")