added test to test_iloc_mask

Author: arthurlw

pandas/tests/indexing/test_iloc.py

@@ -742,6 +742,9 @@ def test_iloc_mask(self):
         result = df.iloc[np.array([True] * len(mask), dtype=bool)]
         tm.assert_frame_equal(result, df)
 
+        result2 = df.iloc[np.array([True, False, True, False, True], dtype=bool)]
+        tm.assert_frame_equal(result2, DataFrame({"a": [0, 2, 4]}, index=["A", "C", "E"]))
+
         # the possibilities
         locs = np.arange(4)
         nums = 2**locs