code: def test_plugin_viewer_load(self):
      viewer = PerspectiveViewer(plugin=Plugin.XBAR)
      assert viewer.plugin == "X Bar"
  
file_path: perspective/python/perspective/perspective/tests/core/test_plugin.py
imports: from pytest import raises
  from perspective import PerspectiveError, PerspectiveViewer, PerspectiveWidget, Plugin
label_desc: Use image node_id 8 for calling the TestPlugin obj's underlying member method code with example usage: obj.test_plugin_viewer_load() without return types