Added strop.split tests when sep is None.
diff --git a/Lib/test/test_strop.py b/Lib/test/test_strop.py
index 9243ff4..a4f1882 100644
--- a/Lib/test/test_strop.py
+++ b/Lib/test/test_strop.py
@@ -45,6 +45,12 @@
['this', 'is', 'the', 'split', 'function'])
test('split', 'a|b|c|d', ['a', 'b', 'c', 'd'], '|')
test('split', 'a|b|c|d', ['a', 'b', 'c|d'], '|', 2)
+test('split', 'a b c d', ['a', 'b c d'], None, 1)
+test('split', 'a b c d', ['a', 'b', 'c d'], None, 2)
+test('split', 'a b c d', ['a', 'b', 'c', 'd'], None, 3)
+test('split', 'a b c d', ['a', 'b', 'c', 'd'], None, 4)
+test('split', 'a b c d', ['a', 'b', 'c', 'd'], None, 0)
+test('split', 'a b c d', ['a', 'b', 'c d'], None, 2)
# join now works with any sequence type
class Sequence: