如何在rspec中测试show方法

Question

How do I format the following line to do a request to /users/1 ?

get :show, {format: :json, id: @user1.id }

I have tried every permutation and bracket arrangement

Resulting error:

NoMethodError:
           undefined method `json' for #<UsersController

The entire spec file:

describe UsersController, :type => :controller do require 'database_cleaner'

DatabaseCleaner.strategy = :truncation

describe "GET users" do
    before(:all) do 
        @user1 = FactoryGirl.create :user, name: "Yakov", default_pull_rate: 10, default_push_rate: 9 
        @user2 = FactoryGirl.create :user, name: "Smirnov", default_pull_rate: 15, default_push_rate: 1
        @user1.save
        @user2.save

        @player1 = FactoryGirl.create :player, user_id: 1
        @player1.save
    end

    it "returns all users" do 
        get :index, :format => :json

        expect(response.status).to eq 200

        body = JSON.parse(response.body)
        user_names = body.map { |u| u["name"] } 

        expect(user_names).to match_array(["Yakov", "Smirnov"])

    end

    it "returns player for a user" do 

        get :show, {format: :json, id: @user1.id }

        expect(response.status).to eq 200
    end

    DatabaseCleaner.clean

end

end

Controller:

class UsersController < ApplicationController
    include ActionController::MimeResponds

  def index
    @users = User.all
    respond_to do |format|
        format.json { render json: @users }
    end
  end

  def show
    @user = User.find(params[:id])
    respond_to do |format|
      format.json { render json @user } 
    end
  end

  def create
    @user = PowerUp.new(params[:user])
        @user.save!
  end
end

Answer 1

Your test is working perfectly. It is actually showing you a problem in your controller.

In your show action, you have

format.json { render json @user } 

It should be

format.json { render json: @user }