unicode: Added another test to make sure we don't screw up bytestrings.

git-svn-id: http://code.djangoproject.com/svn/django/branches/unicode@5205 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/string_lookup/models.py

@@ -76,4 +76,8 @@ __test__ = {'API_TESTS': ur"""
 >>> fx.save()
 >>> Foo.objects.get(viking__contains=u'\xf3')
 <Foo: Foo Bjorn>
+
+# We can also do the above query using UTF-8 strings.
+>>> Foo.objects.get(viking__contains='\xc3\xb3')
+<Foo: Foo Bjorn>
 """}