fix test error

tests/python/unittest/test_numpy_op.py

@@ -1505,9 +1505,14 @@ def check_index_update_forward(mx_ret, a, ind, val, ind_ndim, ind_num, eps):
             else:
                 expect_tmp = val
             mx_tmp = mx_ret[t_ind]
-            if _np.allclose(expect_tmp, mx_tmp, rtol=eps, atol=eps):
-                mx_ret[t_ind] = 0
-                a[t_ind] = 0
+            close_pos = _np.where(_np.isclose(expect_tmp, mx_tmp, rtol=eps, atol=eps))
+            if a[t_ind].ndim == 0:
+                if close_pos[0].size == 1:
+                    mx_ret[t_ind] = 0
+                    a[t_ind] = 0
+            else:
+                mx_ret[t_ind][close_pos] = 0
+                a[t_ind][close_pos] = 0
         assert_almost_equal(mx_ret, a, rtol=eps, atol=eps)
 
     def index_update_bwd(out_grad, a_grad, ind, val_grad, ind_ndim, ind_num, grad_req_a, grad_req_val):
@@ -1585,8 +1590,6 @@ def index_update_bwd(out_grad, a_grad, ind, val_grad, ind_ndim, ind_num, grad_re
         itertools.product([True, False], grad_req, grad_req, dtypes, ['int32', 'int64']):
         for a_shape, ind, val_shape ,ind_ndim, ind_num in configs:
             eps = 1e-3
-            if sys.platform.startswith('linux'):
-                eps = 1e-2
             atype = dtype
             valtype = dtype
             test_index_update = TestIndexUpdate()