如何在控制器导轨外部使用Rails参数进行测试

Question

I made a module in /rails_root/lib/common/common_log.rb and included it in ApplicationController, calling it from my controller is normally end. then I did rspec. but there was an error. I can't understand how do I write params in spec file. Please help me to solve it.

# rspec put out error

require 'spec_helper'
require File.expand_path("../../../../lib/common/common_log", __FILE__)
include CommonLog
describe CommonLog do
  it "log_error" do
    log_error("xxx")
  end
end

# my module file common_log.rb

 module CommonLog def log_error(msg) Rails.logger.error "E: controller : #{params[:controller]} action : #{params[:action]} msg=#{msg}" end end 

# my spec file

 require 'spec_helper' require File.expand_path("../../../../lib/common/common_log", __FILE__) include CommonLog describe CommonLog do it "log_error" do log_error("xxx") end end 

Answer 1

You will have to use RSpec's anonymous controller feature.

  require 'spec_helper'
  require File.expand_path("../../../../lib/common/common_log", __FILE__)

  describe CommonLog, type: :controller do


  controller do
    include CommonLog
    def index
       render nothing: true
    end
  end

  it "log_error" do
    params = {param1: :value1}
    get :index, params
    #Do the specs you want here
  end
end

What you are doing here is creating an anonymous controller which includes the module you want to spec. Since this module is meant to be included inside a rails controller it gives you exactly what you need: a context of controller to spec your module with.