fix platform dtype

Author: topper-123

pandas/tests/test_algos.py

@@ -98,14 +98,14 @@ def test_basic(self):
         codes, uniques = algos.factorize(list(reversed(range(5))))
         exp = np.array([0, 1, 2, 3, 4], dtype=np.intp)
         tm.assert_numpy_array_equal(codes, exp)
-        exp = np.array([4, 3, 2, 1, 0], dtype=np.int32)
+        exp = np.array([4, 3, 2, 1, 0], dtype=np.int64)
         tm.assert_numpy_array_equal(uniques, exp)
 
         codes, uniques = algos.factorize(list(reversed(range(5))), sort=True)
 
         exp = np.array([4, 3, 2, 1, 0], dtype=np.intp)
         tm.assert_numpy_array_equal(codes, exp)
-        exp = np.array([0, 1, 2, 3, 4], dtype=np.int32)
+        exp = np.array([0, 1, 2, 3, 4], dtype=np.int64)
         tm.assert_numpy_array_equal(uniques, exp)
 
         codes, uniques = algos.factorize(list(reversed(np.arange(5.0))))