old_contents: """Tests for the HTTP server."""
  # -*- coding: utf-8 -*-
  # vim: set fileencoding=utf-8 :
  
  from __future__ import absolute_import, division, print_function
  
  from cheroot.wsgi import PathInfoDispatcher
  
  
  def wsgi_invoke(app, environ):
      """Serve 1 requeset from a WSGI application."""
      response = {}
  
      def start_response(status, headers):
          response.update({
              'status': status,
              'headers': headers,
          })
  
      response['body'] = b''.join(
          app(environ, start_response),
      )
  
      return response
  
  
  def test_dispatch_no_script_name():
      """Despatch despite lack of SCRIPT_NAME in environ."""
      # Bare bones WSGI hello world app (from PEP 333).
      def app(environ, start_response):
          start_response(
              '200 OK', [
                  ('Content-Type', 'text/plain; charset=utf-8'),
              ],
          )
          return [u'Hello, world!'.encode('utf-8')]
  
      # Build a dispatch table.
      d = PathInfoDispatcher([
          ('/', app),
      ])
  
      # Dispatch a request without `SCRIPT_NAME`.
      response = wsgi_invoke(
          d, {
              'PATH_INFO': '/foo',
          },
      )
      assert response == {
          'status': '200 OK',
          'headers': [
              ('Content-Type', 'text/plain; charset=utf-8'),
          ],
          'body': b'Hello, world!',
      }
  
new_contents: """Tests for the HTTP server."""
  # -*- coding: utf-8 -*-
  # vim: set fileencoding=utf-8 :
  
  from __future__ import absolute_import, division, print_function
  
  from cheroot.wsgi import PathInfoDispatcher
  
  
  def wsgi_invoke(app, environ):
      """Serve 1 request from a WSGI application."""
      response = {}
  
      def start_response(status, headers):
          response.update({
              'status': status,
              'headers': headers,
          })
  
      response['body'] = b''.join(
          app(environ, start_response),
      )
  
      return response
  
  
  def test_dispatch_no_script_name():
      """Dispatch despite lack of ``SCRIPT_NAME`` in environ."""
      # Bare bones WSGI hello world app (from PEP 333).
      def app(environ, start_response):
          start_response(
              '200 OK', [
                  ('Content-Type', 'text/plain; charset=utf-8'),
              ],
          )
          return [u'Hello, world!'.encode('utf-8')]
  
      # Build a dispatch table.
      d = PathInfoDispatcher([
          ('/', app),
      ])
  
      # Dispatch a request without `SCRIPT_NAME`.
      response = wsgi_invoke(
          d, {
              'PATH_INFO': '/foo',
          },
      )
      assert response == {
          'status': '200 OK',
          'headers': [
              ('Content-Type', 'text/plain; charset=utf-8'),
          ],
          'body': b'Hello, world!',
      }
  
subject: Fix cheroot.test.test_dispatch spelling