code: def test_row(self):
      body = {"rows": [[1, "A"], [2, "B"]]}
      grids.row("hodor:88", body)
      assert self.request_mock.call_count == 1
      args, kwargs = self.request_mock.call_args
      method, url = args
      self.assertEqual(method, "post")
      self.assertEqual(
          url, "{}/v2/grids/hodor:88/row".format(self.plotly_api_domain)
      )
      self.assertEqual(
          kwargs["data"], _json.dumps(body, sort_keys=True)
      )
  
imports: from __future__ import absolute_import
  import json
  from chart_studio.api.v2 import grids
  from chart_studio.tests.test_plot_ly.test_api import PlotlyApiTestCase
label_desc: Use image node_id 14 for calling the GridsTest obj's underlying member method code with example usage: obj.test_row() without return types