add test and whatsnew about changes of pd.Series indexing and __getitem__

Author: tamuhey

doc/source/whatsnew/v0.25.0.rst

@@ -31,14 +31,22 @@ Backwards incompatible API changes
 Indexing and getitem
 ^^^^^^^^^^^^^^^^^^^^
 
-Indexing and getitem of pd.dataframe now accept zerodim np.array.
+Indexing and getitem of pd.DataFrame now accept zerodim np.array.
 
 .. ipython:: python
     df = pd.DataFrame([[1, 2], [3, 4]])[np.array(0)]
     df.iloc[np.array(0)]
     df.loc[np.array(0)]
     df[np.array(0)]
 
+Indexing and getitem of pd.Series now accept zerodim np.array.
+
+.. ipython:: python
+    sr = pd.Series([1, 2])
+    sr.iloc[np.array(0)]
+    sr.loc[np.array(0)]
+    sr[np.array(0)]
+
 Other API Changes
 ^^^^^^^^^^^^^^^^^
 

pandas/tests/indexing/test_iloc.py

@@ -686,3 +686,12 @@ def test_indexing_zero_dim_np_array(self):
         # expected series
         sr = pd.Series([1, 2], name=0)
         tm.assert_series_equal(result, sr)
+
+    def test_series_indexing_zero_dim_np_array(self):
+        # GH24919
+        sr = Series([1, 2])
+
+        # should not raise an error
+        result = sr.iloc[np.array(0)]
+
+        assert result == 1

pandas/tests/indexing/test_loc.py

@@ -776,3 +776,12 @@ def test_indexing_zero_dim_np_array(self):
         # expected series
         sr = pd.Series([1, 2], name=0)
         tm.assert_series_equal(result, sr)
+
+    def test_series_indexing_zero_dim_np_array(self):
+        # GH24924
+        sr = Series([1, 2])
+
+        # should not raise an error
+        result = sr.loc[np.array(0)]
+
+        assert result == 1

pandas/tests/series/indexing/test_indexing.py

@@ -838,3 +838,13 @@ def test_head_tail(test_data):
     assert_series_equal(test_data.series.head(0), test_data.series[0:0])
     assert_series_equal(test_data.series.tail(), test_data.series[-5:])
     assert_series_equal(test_data.series.tail(0), test_data.series[0:0])
+
+
+def test_getitem_with_zerodim_np_array():
+    # GH24924
+    sr = Series([1, 2])
+
+    # should not raise an error
+    result = sr[np.array(0)]
+
+    assert result == 1