code: def test_canon_target_and_host_0():
      target = None
      host = None
      target, host = Target.canon_target_and_host(target, host)
      assert target is None
      assert host is None
  
imports: import json
  import pytest
  import tvm
  import tvm.testing
  from tvm.target import Target, arm_cpu, bifrost, cuda, intel_graphics, mali, rocm, vta
label_desc: Use image node_id 32 for calling a global function with example usage: test_canon_target_and_host_0() without return types