class_docstr: Test def add_cyclic(data, x=None, y=None, axis=-1,
                      cyclic=360, precision=1e-4):
  - variations of data, x, and y with and without axis keyword
  - different units of x - cyclic keyword
  - detection of cyclic points - precision keyword
  - error catching
docstr: Test data and x 2d; no keyword name for x
docstr_tok: ["Test","data","and","x","2d",";","no","keyword","name","for","x"]
code: def test_data_and_x_2d(self):
      """Test data and x 2d; no keyword name for x"""
      c_data, c_lons = add_cyclic(self.data2d, self.lon2d)
      assert_array_equal(c_data, self.c_data2d)
      assert_array_equal(c_lons, self.c_lon2d)
  
imports: import numpy
  import numpy.ma
  from numpy.testing import assert_array_equal
  import pytest
  from cartopy.util import add_cyclic, add_cyclic_point, has_cyclic
label_desc: Use image node_id 5 for calling the TestAddCyclic obj's underlying member method code with example usage: obj.test_data_and_x_2d() without return types