fixup! BUG: repr SparseDataFrame after setting a value

Author: kernc

pandas/tests/sparse/test_format.py

@@ -120,12 +120,11 @@ def test_sparse_frame(self):
     def test_sparse_repr_after_set(self):
         # GH 15488
         sdf = pd.SparseDataFrame(index=[0, 1], columns=[0, 1])
+        res = sdf.copy()
 
         # Ignore the warning
-        old_opt = pd.core.config.get_option('mode.chained_assignment')
-        pd.core.config.set_option('mode.chained_assignment', None)
-        sdf[0][0] = 1  # This line triggers the bug
-        try:
-            repr(sdf)
-        finally:
-            pd.core.config.set_option('mode.chained_assignment', old_opt)
+        with pd.option_context('mode.chained_assignment', None):
+            sdf[0][0] = 1  # This line triggers the bug
+
+        repr(sdf)
+        tm.assert_sp_frame_equal(sdf, res)