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-rw-r--r--numpy/lib/tests/test_index_tricks.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/numpy/lib/tests/test_index_tricks.py b/numpy/lib/tests/test_index_tricks.py
index 0ede40d5a..61197af4f 100644
--- a/numpy/lib/tests/test_index_tricks.py
+++ b/numpy/lib/tests/test_index_tricks.py
@@ -242,6 +242,10 @@ def test_ndindex():
expected = [ix for ix, e in np.ndenumerate(np.zeros((1, 2, 3)))]
assert_array_equal(x, expected)
+ # Make sure size argument is optional
+ x = list(np.ndindex())
+ assert_equal(x, [(0,)])
+
if __name__ == "__main__":
run_module_suite()