TST: dtype fixes on tests wrt GH8432

Author: jreback

doc/source/v0.15.0.txt

@@ -742,7 +742,6 @@ Prior Version Deprecations/Changes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 - Remove ``DataFrame.delevel`` method in favor of ``DataFrame.reset_index``
-  (:issue:`420`)
 
 .. _whatsnew_0150.deprecations:
 

pandas/tests/test_index.py

@@ -1066,8 +1066,8 @@ def test_reindex_doesnt_preserve_type_if_target_is_empty_index(self):
         def get_reindex_type(target):
             return idx.reindex(target)[0].dtype.type
 
-        self.assertEqual(get_reindex_type(pd.Int64Index([])), np.int_)
-        self.assertEqual(get_reindex_type(pd.Float64Index([])), np.float_)
+        self.assertEqual(get_reindex_type(pd.Int64Index([])), np.int64)
+        self.assertEqual(get_reindex_type(pd.Float64Index([])), np.float64)
         self.assertEqual(get_reindex_type(pd.DatetimeIndex([])), np.datetime64)
 
         reindexed = idx.reindex(pd.MultiIndex([pd.Int64Index([]),
@@ -3367,7 +3367,7 @@ def test_reindex_lvl_preserves_type_if_target_is_empty_list_or_array(self):
         # GH7774
         idx = pd.MultiIndex.from_product([[0, 1], ['a', 'b']])
         self.assertEqual(idx.reindex([], level=0)[0].levels[0].dtype.type,
-                         np.int_)
+                         np.int64)
         self.assertEqual(idx.reindex([], level=1)[0].levels[1].dtype.type,
                          np.object_)