test_iop fix: assign 'res' to in-place operator

Author: simonetgordon

array_api_tests/test_special_cases.py

@@ -1308,7 +1308,7 @@ def test_iop(iop_name, iop, case, oneway_dtypes, oneway_shapes, data):
     note(f"{x2=}")
 
     res = xp.asarray(x1, copy=True)
-    iop(res, x2)
+    res = iop(res, x2)
     # sanity check
     ph.assert_result_shape(iop_name, [x1.shape, x2.shape], res.shape)