controller testing sinatra example

gistfile1.rb

#### CONTROLLER ####

get '/cats' do
  @cats = Cat.all
  erb :index
end

post '/cats' do
  cat = Cat.new(name: params[:name], product: params[:product])
  cat.save ? (redirect '/cats') : (status 400)
end

#### VIEW ####

<h1>THIS IS THE CATS INDEX PAGE</h1>

<form method='post' action='/cats'>
  <input type='text' name='name' placeholder='put cat name'>
  <input type='text' name='product' placeholder='put cat product'>
  <input type='submit' value='create new cat'>
</form>

<ul>
  <% @cats.each do |cat| %>
    <li>
      <h2><%= cat.name %></h2>
      <p><%= cat.product %></p>
    </li>
  <% end %>
</ul>

#### SPEC ####

require 'spec_helper'

describe "CatsController" do

  describe "GET /cats" do

    before do
      @cat = Cat.create(name: Faker::Name.name, product: "van")
      get '/cats'
    end

    it "returns an http status of 200" do
      expect(last_response.status).to eq(200)
    end

    it "returns index.erb" do
      expect(last_response.body).to include("<h1>THIS IS THE CATS INDEX PAGE</h1>")
    end

    it "the template contains all the cats in the DB" do
      expect(last_response.body).to include(@cat.name)
    end

    after do
      Cat.destroy_all
    end

  end

  describe "POST /cats" do

    describe "if valid request" do

      before do
        post '/cats', {name: "Chairvan Davis", product: "one van"}
      end

      it "returns http status of 302" do
        expect(last_response.status).to eq(302)
      end

      it "redirects to /cats" do
        expect(last_response.header["Location"]).to include('/cats')
      end

      it "add a new cat to the database" do
        expect(Cat.find_by(name: "Chairvan Davis")).to be_truthy
      end

      after do
        Cat.destroy_all
      end

    end

    describe "if invalid request" do

      before do
        post '/cats', {name: "", product: "", asdf: "eyyyyy"}
      end

      it "return status 400" do
        expect(last_response.status).to eq(400)
      end

      it "it doesn't make a new cat" do
        expect(Cat.all.length).to eq(0)
      end

    end

  end

end