DEP: Deprecate calling the `out` argument `y`

Fixes gh-8995

1 files changed, 8 insertions, 1 deletions

diff --git a/numpy/lib/tests/test_ufunclike.py b/numpy/lib/tests/test_ufunclike.py
index 97d608ecf..2f671739e 100644
--- a/numpy/lib/tests/test_ufunclike.py
+++ b/numpy/lib/tests/test_ufunclike.py
@@ -3,7 +3,8 @@ from __future__ import division, absolute_import, print_function
 import numpy.core as nx
 import numpy.lib.ufunclike as ufl
 from numpy.testing import (
-    run_module_suite, TestCase, assert_, assert_equal, assert_array_equal
+    run_module_suite, TestCase, assert_, assert_equal, assert_array_equal,
+    assert_warns
     )
 
 
@@ -61,5 +62,11 @@ class TestUfunclike(TestCase):
         assert_(isinstance(f, MyArray))
         assert_equal(f.metadata, 'foo')
 
+    def test_deprecated(self):
+        # NumPy 1.13.0, 2017-04-26
+        assert_warns(DeprecationWarning, ufl.fix, [1, 2], y=nx.empty(2))
+        assert_warns(DeprecationWarning, ufl.isposinf, [1, 2], y=nx.empty(2))
+        assert_warns(DeprecationWarning, ufl.isneginf, [1, 2], y=nx.empty(2))
+
 if __name__ == "__main__":
     run_module_suite()