TST: followup to pandas-dev#16364, catch errstate warnings (pandas-dev#16373)

Author: jreback

pandas/core/generic.py

@@ -4113,11 +4113,15 @@ def _clip_with_scalar(self, lower, upper):
 
         result = self.values
         mask = isnull(result)
-        if upper is not None:
-            result = np.where(result >= upper, upper, result)
-        if lower is not None:
-            result = np.where(result <= lower, lower, result)
-        result[mask] = np.nan
+
+        with np.errstate(all='ignore'):
+            if upper is not None:
+                result = np.where(result >= upper, upper, result)
+            if lower is not None:
+                result = np.where(result <= lower, lower, result)
+        if np.any(mask):
+            result[mask] = np.nan
+
         return self._constructor(
             result, **self._construct_axes_dict()).__finalize__(self)
 

pandas/tests/frame/test_analytics.py

@@ -1824,6 +1824,17 @@ def test_dataframe_clip(self):
             assert (clipped_df.values[ub_mask] == ub).all()
             assert (clipped_df.values[mask] == df.values[mask]).all()
 
+    @pytest.mark.xfail(reason=("clip on mixed integer or floats "
+                               "with integer clippers coerces to float"))
+    def test_clip_mixed_numeric(self):
+
+        df = DataFrame({'A': [1, 2, 3],
+                        'B': [1., np.nan, 3.]})
+        result = df.clip(1, 2)
+        expected = DataFrame({'A': [1, 2, 2],
+                              'B': [1., np.nan, 2.]})
+        tm.assert_frame_equal(result, expected, check_like=True)
+
     def test_clip_against_series(self):
         # GH #6966