code: def test_full_dtypes_cpu_input(self, xp, dtype1, dtype2):
      with warnings.catch_warnings():
          warnings.simplefilter("ignore", numpy.ComplexWarning)
          return xp.full(
              (2, 3, 4), numpy.array(1, dtype=dtype1), dtype=dtype2
          )
  
imports: import numpy
  import pytest
  import warnings
  import cupy
  from cupy import testing
label_desc: Use image node_id 31 for calling the TestBasic obj's underlying member method code with example usage: obj.test_full_dtypes_cpu_input(xp, dtype1, dtype2) and returns: xp