How can I test the page title while working with Sinatra + MiniTest

Question

I am having the configuration as below :

Rakefile

require 'rake/testtask'

Rake::TestTask.new do |t|
  t.pattern = 'spec/*_spec.rb'
end

Gemfile

source 'https://rubygems.org'

gem 'sinatra'
gem 'thin'
gem 'rack-test'

spec_helper.rb

ENV['RACK_ENV'] = 'test'

require 'minitest/autorun'
require 'rack/test'
require_relative '../app'

include Rack::Test::Methods

def app
  MyApp
end

app_spec.rb

require_relative 'spec_helper'

describe 'Hello World' do

  it 'should have hello world' do
    get '/'
    last_response.must_be :ok?
    # I want to do something like below
    last_response.title must_match /home page/i
  end
end

How can I test the page title of a view using MiniTest and Sinatra.

Answer 1

You can't check this with minitest alone.

You should be looking at Capybara to achieve this.

Capybara helps you test web applications by simulating how a real user would interact with your app.

Once setup use has_title? matcher to test the title of the rendered page.

Using Capybara you can test various aspects of your page like its content/text, if it has a particular link or not, a particular button, text field, email field, etc. You can simulate the behavior of filling up a form and clicking on a button to submit the same. Putting it simply, it just behaves as a real user would by simulating the actions that a user can perform on a given page with what all a user can see on a given page.