Iterate Fast – How You Can Have Fewer Bugs By Using Rspec TDD In Ruby On Rails 6 | 20in20 – Week 14

require 'rails_helper'

# This spec was generated by rspec-rails when you ran the scaffold generator.
# It demonstrates how one might use RSpec to test the controller code that
# was generated by Rails when you ran the scaffold generator.
#
# It assumes that the implementation code is generated by the rails scaffold
# generator. If you are using any extension libraries to generate different
# controller code, this generated spec may or may not pass.
#
# It only uses APIs available in rails and/or rspec-rails. There are a number
# of tools you can use to make these specs even more expressive, but we're
# sticking to rails and rspec-rails APIs to keep things simple and stable.

RSpec.describe '/posts', type: :request do
  # Post. As you add validations to Post, be sure to
  # adjust the attributes here as well.
  current_user = User.first_or_create!(email: 'dean@example.com', password: 'password', password_confirmation: 'password')

  let(:valid_attributes) do
    {
      'id' => '1',
      'title' => 'Test',
      'body' => '12345',
      'user' => current_user
    }
  end

  let(:invalid_attributes) do
    {
      'id' => 'a',
      'title' => '1',
      'body' => '1234'
    }
  end

  describe 'GET /index' do
    it 'renders a successful response' do
      post = Post.new(valid_attributes)
      post.user = current_user
      post.save
      get posts_url
      expect(response).to be_successful
    end
  end

  describe 'GET /show' do
    it 'renders a successful response' do
      post = Post.new(valid_attributes)
      post.user = current_user
      post.save
      get post_url(post)
      expect(response).to be_successful
    end
  end

  describe 'GET /new' do
    it 'renders a successful response' do
      get new_post_url
      expect(response).to be_successful
    end
  end

  describe 'GET /edit' do
    it 'render a successful response' do
      post = Post.new(valid_attributes)
      post.user = current_user
      post.save
      get edit_post_url(post)
      expect(response).to be_successful
    end
  end

  describe 'POST /create' do
    context 'with valid parameters' do
      it 'creates a new Post' do
        expect do
          post = Post.new(valid_attributes)
          post.user = current_user
          post.save
          post posts_url, params: { post: valid_attributes }
        end.to change(Post, :count).by(1)
      end

      it 'redirects to the created post' do
        post posts_url, params: { post: valid_attributes }
        expect(response).to be_successful
      end
    end

    context 'with invalid parameters' do
      it 'does not create a new Post' do
        expect do
          post posts_url, params: { post: invalid_attributes }
        end.to change(Post, :count).by(0)
      end

      it "renders a successful response (i.e. to display the 'new' template)" do
        post posts_url, params: { post: invalid_attributes }
        expect(response).to be_successful
      end
    end
  end

  describe 'PATCH /update' do
    context 'with valid parameters' do
      let(:new_attributes) do
        {
          'id' => '1',
          'title' => 'Test',
          'body' => '12345',
          'user' => current_user
        }
      end

      it 'updates the requested post' do
        post = Post.new(valid_attributes)
        post.user = current_user
        post.save
        patch post_url(post), params: { post: new_attributes }
        post.reload
        skip('Add assertions for updated state')
      end

      it 'redirects to the post' do
        post = Post.new(valid_attributes)
        post.user = current_user
        post.save
        patch post_url(post), params: { post: new_attributes }
        post.reload
        expect(response).to redirect_to(post_url(post))
      end
    end

    context 'with invalid parameters' do
      it "renders a successful response (i.e. to display the 'edit' template)" do
        post = Post.create! valid_attributes
        patch post_url(post), params: { post: invalid_attributes }
        expect(response).to be_successful
      end
    end
  end

  describe 'DELETE /destroy' do
    it 'destroys the requested post' do
      post = Post.new(valid_attributes)
      post.user = current_user
      post.save
      expect do
        delete post_url(post)
      end.to change(Post, :count).by(-1)
    end

    it 'redirects to the posts list' do
      post = Post.new(valid_attributes)
      post.user = current_user
      post.save
      delete post_url(post)
      expect(response).to redirect_to(posts_url)
    end
  end
end