adding clip tests

Author: mgasvoda

pandas/tests/frame/test_analytics.py

@@ -1931,22 +1931,30 @@ def test_clip_against_frame(self, axis):
         tm.assert_frame_equal(clipped_df[ub_mask], ub[ub_mask])
         tm.assert_frame_equal(clipped_df[mask], df[mask])
 
-    def test_clip_na(self):
-        msg = "Cannot use an NA"
-        with tm.assert_raises_regex(ValueError, msg):
-            self.frame.clip(lower=np.nan)
-
-        with tm.assert_raises_regex(ValueError, msg):
-            self.frame.clip(lower=[np.nan])
-
-        with tm.assert_raises_regex(ValueError, msg):
-            self.frame.clip(upper=np.nan)
-
-        with tm.assert_raises_regex(ValueError, msg):
-            self.frame.clip(upper=[np.nan])
-
-        with tm.assert_raises_regex(ValueError, msg):
-            self.frame.clip(lower=np.nan, upper=np.nan)
+    # def test_clip_na(self):
+    #     msg = "Cannot use an NA"
+    #     with tm.assert_raises_regex(ValueError, msg):
+    #         self.frame.clip(lower=np.nan)
+
+    #     with tm.assert_raises_regex(ValueError, msg):
+    #         self.frame.clip(lower=[np.nan])
+
+    #     with tm.assert_raises_regex(ValueError, msg):
+    #         self.frame.clip(upper=np.nan)
+
+    #     with tm.assert_raises_regex(ValueError, msg):
+    #         self.frame.clip(upper=[np.nan])
+
+    #     with tm.assert_raises_regex(ValueError, msg):
+    #         self.frame.clip(lower=np.nan, upper=np.nan)
+
+    def test_clip_with_na_args(self):
+        """Should process np.nan argument as None """
+        # GH # 17276
+        self.frame.clip(np.nan)
+        self.frame.clip(upper=[1,2,np.nan])
+        self.frame.clip(lower=[1,np.nan,3])
+        self.frame.clip(upper=np.nan, lower=np.nan)
 
     # Matrix-like
 

pandas/tests/series/test_analytics.py

@@ -1000,6 +1000,15 @@ def test_clip_types_and_nulls(self):
             assert list(isna(s)) == list(isna(l))
             assert list(isna(s)) == list(isna(u))
 
+    def test_clip_with_na_args(self):
+        """Should process np.nan argument as None """
+        # GH # 17276
+        s = Series([1,2,3])
+        s.clip(np.nan)
+        s.clip(upper=[1,2,np.nan])
+        s.clip(lower=[1,np.nan,3])
+        s.clip(upper=np.nan, lower=np.nan)
+
     def test_clip_against_series(self):
         # GH #6966