Issue 1818: collections.namedtuple() to support automatic renaming of invalid fieldnames.
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 17ec30c..4901eae 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -44,6 +44,17 @@
self.assertRaises(TypeError, Point._make, [11]) # catch too few args
self.assertRaises(TypeError, Point._make, [11, 22, 33]) # catch too many args
+ def test_name_fixer(self):
+ for spec, renamed in [
+ [('efg', 'g%hi'), ('efg', '_2')], # field with non-alpha char
+ [('abc', 'class'), ('abc', '_2')], # field has keyword
+ [('8efg', '9ghi'), ('_1', '_2')], # field starts with digit
+ [('abc', '_efg'), ('abc', '_2')], # field with leading underscore
+ [('abc', 'efg', 'efg', 'ghi'), ('abc', 'efg', '_3', 'ghi')], # duplicate field
+ [('abc', '', 'x'), ('abc', '_2', 'x')], # fieldname is a space
+ ]:
+ self.assertEqual(namedtuple('NT', spec, rename=True)._fields, renamed)
+
def test_instance(self):
Point = namedtuple('Point', 'x y')
p = Point(11, 22)