Rspec：如何在辅助规范中规范 request.env

Rspec：如何在辅助规范中规范 request.env？

ruby
# app/controllers/example_controller.rb
class ExampleController < ApplicationController
  def index
    if request.env['SOME_KEY'] == 'some_value'
      # do something
    else
      # do something else
    end
  end
end

ruby
# spec/controllers/example_controller_spec.rb
RSpec.describe ExampleController, type: :controller do
  describe 'GET #index' do
    it 'does something based on request.env' do
      request.env['SOME_KEY'] = 'some_value'
      get :index
      # add your expectations here
    end
    it 'does something else when request.env is different' do
      request.env['SOME_KEY'] = 'different_value'
      get :index
      # add your expectations here
    end
  end
end