class_docstr: Tests for `EmptyPathRedirectMiddleware`.
code: def setUp(self):
      super().setUp()
      app = werkzeug.Request.application(
          lambda req: werkzeug.Response(req.path)
      )
      app = empty_path_redirect.EmptyPathRedirectMiddleware(app)
      app = self._lax_strip_foo_middleware(app)
      self.app = app
      self.server = werkzeug_test.Client(
          self.app, werkzeug.wrappers.Response
      )
  
file_path: tensorboard/tensorboard/backend/empty_path_redirect_test.py
imports: import werkzeug
  from werkzeug import test
  from tensorboard import test
  from tensorboard.backend import empty_path_redirect
label_desc: Use image node_id 1 for calling the EmptyPathRedirectMiddlewareTest obj's underlying member method code with example usage: obj.setUp() without return types