# Copyright (c) OpenMMLab. All rights reserved.
from unittest import TestCase

import torch

from mmocr.models.common.modules import PositionalEncoding


class TestPositionalEncoding(TestCase):

    def test_forward(self):
        pos_encoder = PositionalEncoding()
        x = torch.rand(1, 30, 512)
        out = pos_encoder(x)
        assert out.size() == x.size()