Added format tests.
Fixed bug in alignment of negative numbers.
Whitespace normalization.
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 2d3e1cc..e5957ae 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -540,6 +540,7 @@
self.assertEqual(format(3.1415e-104, ""), str(3.1415e-104))
self.assertEqual(format(-3.1415e-104, ""), str(-3.1415e-104))
self.assertEqual(format(object, ""), str(object))
+ self.assertEqual(format(None, ""), str(None))
# TypeError because self.__format__ returns the wrong type
self.assertRaises(TypeError, format, H(), "")