code: def test_chainerx_get_backend():
      context = chainerx.Context()
      with chainerx.context_scope(context):
          backend = chainerx.get_backend("native")
          assert backend.context is context
          assert backend.name == "native"
  
file_path: chainer/tests/chainerx_tests/unit_tests/test_context.py
imports: import pytest
  import chainerx
label_desc: Use image node_id 5 for calling a global function with example usage: test_chainerx_get_backend() without return types