4 controllers tests

Gemfile

@@ -3,6 +3,8 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 ruby '2.7.1'
 
+gem 'haml'
+gem "haml-rails", "~> 2.0"
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails', branch: 'main'
 gem 'rails', '~> 6.1.3'
 # Use postgresql as the database for Active Record
@@ -33,6 +35,7 @@ group :development, :test do
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
   gem 'rspec-rails', '~> 4.0.2'
   gem 'factory_bot_rails'
+  gem 'rails-controller-testing'
 end
 
 group :development do

Gemfile.lock

@@ -80,6 +80,7 @@ GEM
     crass (1.0.6)
     diff-lcs (1.4.4)
     erubi (1.10.0)
+    erubis (2.7.0)
     factory_bot (6.1.0)
       activesupport (>= 5.0.0)
     factory_bot_rails (6.1.0)
@@ -88,6 +89,20 @@ GEM
     ffi (1.14.2)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
+    haml (5.2.1)
+      temple (>= 0.8.0)
+      tilt
+    haml-rails (2.0.1)
+      actionpack (>= 5.1)
+      activesupport (>= 5.1)
+      haml (>= 4.0.6, < 6.0)
+      html2haml (>= 1.0.1)
+      railties (>= 5.1)
+    html2haml (2.2.0)
+      erubis (~> 2.7.0)
+      haml (>= 4.0, < 6)
+      nokogiri (>= 1.6.0)
+      ruby_parser (~> 3.5)
     i18n (1.8.9)
       concurrent-ruby (~> 1.0)
     jbuilder (2.11.2)
@@ -139,6 +154,10 @@ GEM
       bundler (>= 1.15.0)
       railties (= 6.1.3)
       sprockets-rails (>= 2.0.0)
+    rails-controller-testing (1.0.5)
+      actionpack (>= 5.0.1.rc1)
+      actionview (>= 5.0.1.rc1)
+      activesupport (>= 5.0.1.rc1)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
@@ -172,6 +191,8 @@ GEM
       rspec-mocks (~> 3.10)
       rspec-support (~> 3.10)
     rspec-support (3.10.2)
+    ruby_parser (3.15.1)
+      sexp_processor (~> 4.9)
     rubyzip (2.3.0)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
@@ -187,6 +208,7 @@ GEM
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
     semantic_range (2.3.1)
+    sexp_processor (4.15.2)
     shoulda-matchers (4.5.1)
       activesupport (>= 4.2.0)
     spring (2.1.1)
@@ -197,6 +219,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
+    temple (0.8.2)
     thor (1.1.0)
     tilt (2.0.10)
     turbolinks (5.2.1)
@@ -233,12 +256,15 @@ DEPENDENCIES
   byebug
   capybara (>= 3.26)
   factory_bot_rails
+  haml
+  haml-rails (~> 2.0)
   jbuilder (~> 2.7)
   listen (~> 3.3)
   pg (~> 1.1)
   puma (~> 5.0)
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.3)
+  rails-controller-testing
   rspec-rails (~> 4.0.2)
   sass-rails (>= 6)
   selenium-webdriver

app/assets/stylesheets/answers.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the answers controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: https://sass-lang.com/

app/assets/stylesheets/questions.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the questions controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: https://sass-lang.com/

app/controllers/answers_controller.rb

@@ -0,0 +1,45 @@
+class AnswersController < ApplicationController
+  def new
+  end
+
+  def create
+    @answer = question.answers.new(answer_params)
+    if @answer.save
+      redirect_to @answer.question
+    else
+      render :new
+    end
+  end
+
+  def edit
+  end
+
+  def update
+    if answer.update(answer_params)
+      redirect_to answer.question
+    else
+      render :edit
+    end
+  end
+
+  def destroy
+    answer.destroy
+    redirect_to answer.question
+  end
+
+  private
+
+  def answer
+    @answer ||= params[:id] ? Answer.find(params[:id]) : question.answers.new
+  end
+
+  helper_method :answer
+
+  def question
+    @question ||= Question.find(params[:question_id])
+  end
+
+  def answer_params
+    params.require(:answer).permit(:body)
+  end
+end

app/controllers/questions_controller.rb

@@ -0,0 +1,49 @@
+class QuestionsController < ApplicationController
+  def index
+    @questions = Question.all
+  end
+
+  def show
+  end
+
+  def new
+  end
+
+  def edit
+  end
+
+  def create
+    @question = Question.new(question_params)
+
+    if @question.save
+      redirect_to @question
+    else
+      render :new
+    end
+  end
+
+  def update
+    if question.update(question_params)
+      redirect_to @question
+    else
+      render :edit
+    end
+  end
+
+  def destroy
+    question.destroy
+    redirect_to questions_path
+  end
+
+  private
+
+  def question
+    @question ||= params[:id] ? Question.find(params[:id]) : Question.new
+  end
+
+  helper_method :question
+
+  def question_params
+    params.require(:question).permit(:title, :body)
+  end
+end

app/helpers/answers_helper.rb

@@ -0,0 +1,2 @@
+module AnswersHelper
+end

app/helpers/questions_helper.rb

@@ -0,0 +1,2 @@
+module QuestionsHelper
+end

config/application.rb

@@ -18,5 +18,14 @@ class Application < Rails::Application
     #
     # config.time_zone = "Central Time (US & Canada)"
     # config.eager_load_paths << Rails.root.join("extras")
+    config.generators do |g|
+      g.test_framework :rspec,
+                       controller_specs: true,
+                       view_specs: false,
+                       helper_specs: false,
+                       routing_specs: false,
+                       request_specs: false
+
+    end
   end
 end

config/routes.rb

@@ -1,3 +1,5 @@
 Rails.application.routes.draw do
-  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
+  resources :questions do
+    resources :answers, shallow: true, except: %i[index show]
+  end
 end

db/migrate/20210301193229_create_answers.rb

@@ -1,7 +1,7 @@
 class CreateAnswers < ActiveRecord::Migration[6.1]
   def change
     create_table :answers do |t|
-      t.string :body, null: false
+      t.text :body, null: false
       t.references :question, null: false, foreign_key: true
 
       t.timestamps

spec/controllers/answers_controller_spec.rb

@@ -0,0 +1,88 @@
+require 'rails_helper'
+
+RSpec.describe AnswersController, type: :controller do
+  let!(:answer) { create(:answer) }
+
+  describe 'GET #new' do
+    before { get :new, params: { question_id: answer.question } }
+
+    it 'renders new view' do
+      expect(response).to render_template :new
+    end
+  end
+
+  describe 'POST #create' do
+    context 'with valid attributes' do
+      it 'saves a new answer in the database' do
+        expect { post :create, params: { answer: attributes_for(:answer),
+                                         question_id: answer.question }
+        }.to change(Answer, :count).by(1)
+      end
+
+      it 'redirects to associated question' do
+        post :create, params: { answer: attributes_for(:answer), question_id: answer.question }
+        expect(response).to redirect_to answer.question
+      end
+    end
+
+    context 'with invalid attributes' do
+      it 'does not save the answer' do
+        expect { post :create, params: { answer: attributes_for(:answer, :invalid_answer),
+                                         question_id: answer.question }
+        }.to_not change(Answer, :count)
+      end
+
+      it 're-renders new view' do
+        post :create, params: { answer: attributes_for(:answer, :invalid_answer), question_id: answer.question }
+        expect(response).to render_template :new
+      end
+    end
+  end
+
+  describe 'GET #edit' do
+    before { get :edit, params: { id: answer } }
+
+    it 'renders edit view' do
+      expect(response).to render_template :edit
+    end
+  end
+
+  describe 'PATCH #update' do
+    context 'with valid attributes' do
+      it 'changes answer attributes' do
+        patch :update, params: { id: answer, answer: { body: 'new body' } }
+        answer.reload
+        expect(answer.body).to eq 'new body'
+      end
+
+      it 'redirects to associated question' do
+        patch :update, params: { id: answer, answer: attributes_for(:answer) }
+        expect(response).to redirect_to answer.question
+      end
+    end
+
+    context 'with invalid attributes' do
+      before { patch :update, params: { id: answer, answer: attributes_for(:answer, :invalid_answer) } }
+
+      it 'does not change answer' do
+        answer.reload
+        expect(answer.body).to eq "MyText"
+      end
+
+      it 're-renders edit view' do
+        expect(response).to render_template :edit
+      end
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    it 'deletes the answer' do
+      expect { delete :destroy, params: { id: answer } }.to change(Answer, :count).by(-1)
+    end
+
+    it 'redirects to associated question' do
+      delete :destroy, params: { id: answer }
+      expect(response).to redirect_to answer.question
+    end
+  end
+end