old_contents: from misuzu import Misuzu, Section
  import json
  
  
  def test_app_get():
      app = Misuzu("first test")
  
      sec = Section("test")
  
      @sec.get("/")
      async def index(request):
          return {"hello": "world"}
  
      app.register_section(sec)
  
      request, response = app.test.get("/")
  
      assert request.url == '/'
      assert response.text == '{"hello": "world"}'
  
  
new_contents: from misuzu import Misuzu, Section
  from misuzu.exceptions import MisuzuRuntimeError, UnknownSectionException
  import json
  import pytest
  
  
  def test_use_not_section_instance():
      with pytest.raises(MisuzuRuntimeError):
          app = Misuzu("test")
          app.use(Misuzu())
  
  
  def test_use_section():
      app = Misuzu("test")
      app.use(Section("test"))
  
      assert len(app.sections) == 1
  
subject: add test case for Misuzu