Add collections.NamedTuple
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
new file mode 100644
index 0000000..a139129
--- /dev/null
+++ b/Lib/test/test_collections.py
@@ -0,0 +1,57 @@
+import unittest
+from test import test_support
+from collections import NamedTuple
+
+class TestNamedTuple(unittest.TestCase):
+
+ def test_factory(self):
+ Point = NamedTuple('Point', 'x y')
+ self.assertEqual(Point.__name__, 'Point')
+ self.assertEqual(Point.__doc__, 'Point(x, y)')
+ self.assertEqual(Point.__slots__, ())
+ self.assertEqual(Point.__module__, __name__)
+ self.assertEqual(Point.__getitem__, tuple.__getitem__)
+ self.assert_('__getitem__' in Point.__dict__) # superclass methods localized
+
+ def test_instance(self):
+ Point = NamedTuple('Point', 'x y')
+ p = Point(11, 22)
+ self.assertEqual(p, Point(x=11, y=22))
+ self.assertEqual(p, Point(11, y=22))
+ self.assertEqual(p, Point(y=22, x=11))
+ self.assertEqual(p, Point(*(11, 22)))
+ self.assertEqual(p, Point(**dict(x=11, y=22)))
+ self.assertRaises(TypeError, Point, 1) # too few args
+ self.assertRaises(TypeError, Point, 1, 2, 3) # too many args
+ self.assertRaises(TypeError, eval, 'Point(XXX=1, y=2)', locals()) # wrong keyword argument
+ self.assertRaises(TypeError, eval, 'Point(x=1)', locals()) # missing keyword argument
+ self.assertEqual(repr(p), 'Point(x=11, y=22)')
+ self.assert_('__dict__' not in dir(p)) # verify instance has no dict
+ self.assert_('__weakref__' not in dir(p))
+
+ def test_tupleness(self):
+ Point = NamedTuple('Point', 'x y')
+ p = Point(11, 22)
+
+ self.assert_(isinstance(p, tuple))
+ self.assertEqual(p, (11, 22)) # matches a real tuple
+ self.assertEqual(tuple(p), (11, 22)) # coercable to a real tuple
+ self.assertEqual(list(p), [11, 22]) # coercable to a list
+ self.assertEqual(max(p), 22) # iterable
+ self.assertEqual(max(*p), 22) # star-able
+ x, y = p
+ self.assertEqual(p, (x, y)) # unpacks like a tuple
+ self.assertEqual((p[0], p[1]), (11, 22)) # indexable like a tuple
+ self.assertRaises(IndexError, p.__getitem__, 3)
+
+ self.assertEqual(p.x, x)
+ self.assertEqual(p.y, y)
+ self.assertRaises(AttributeError, eval, 'p.z', locals())
+
+
+def test_main(verbose=None):
+ test_classes = [TestNamedTuple]
+ test_support.run_unittest(*test_classes)
+
+if __name__ == "__main__":
+ test_main(verbose=True)