Add RSpec and Capybara, and a basic feature spec

.rspec

+--format documentation --color

Gemfile

@@ -23,3 +23,9 @@ group :production do
   # use postgres in production, or move outside a group if your app uses postgres for development and production 
   gem 'pg'
 end
+
+group :test do
+  gem 'rspec'
+  gem 'capybara'
+  gem 'database_cleaner'
+end

Gemfile.lock

@@ -14,16 +14,32 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
+    addressable (2.4.0)
     arel (6.0.3)
     backports (3.6.7)
     bond (0.5.1)
     builder (3.2.2)
+    capybara (2.7.1)
+      addressable
+      mime-types (>= 1.16)
+      nokogiri (>= 1.3.3)
+      rack (>= 1.0.0)
+      rack-test (>= 0.5.4)
+      xpath (~> 2.0)
     coderay (1.1.0)
+    database_cleaner (1.3.0)
+    diff-lcs (1.2.5)
     i18n (0.7.0)
     json (1.8.3)
     method_source (0.8.2)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.0.0)
     minitest (5.8.3)
     multi_json (1.11.2)
+    nokogiri (1.6.7.2)
+      mini_portile2 (~> 2.0.0.rc2)
     pg (0.18.4)
     pry (0.10.3)
       coderay (~> 1.1.0)
@@ -44,6 +60,19 @@ GEM
       rack (>= 1.0)
       rack-test (~> 0.6.2)
       ripl (>= 0.7.0)
+    rspec (3.4.0)
+      rspec-core (~> 3.4.0)
+      rspec-expectations (~> 3.4.0)
+      rspec-mocks (~> 3.4.0)
+    rspec-core (3.4.4)
+      rspec-support (~> 3.4.0)
+    rspec-expectations (3.4.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.4.0)
+    rspec-mocks (3.4.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.4.0)
+    rspec-support (3.4.1)
     shotgun (0.9.1)
       rack (>= 1.0)
     sinatra (1.4.6)
@@ -71,16 +100,21 @@ GEM
       sinatra (>= 1.2.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
+    xpath (2.0.0)
+      nokogiri (~> 1.3)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   activesupport
+  capybara
+  database_cleaner
   pg
   pry
   puma
   rake
+  rspec
   shotgun
   sinatra
   sinatra-activerecord

spec/features/home_spec.rb

+require_relative '../spec_helper'
+
+
+# Make sure your specs are tagged with type: :feature if you
+# want to use capybara methods (visit, fill_in, click_link, have_content, etc)
+
+describe 'Home page', type: :feature do
+
+  before { visit '/' }
+
+  it 'should contain the text "Home Page"' do
+    expect(page).to have_content('Home Page')
+  end
+
+end
+

spec/spec_helper.rb

+ENV['RACK_ENV'] ||= 'test'
+
+require_relative '../config/environment'
+
+require 'rspec'
+require 'capybara/rspec' # capybara will be loaded for tests tagged :feature
+require 'database_cleaner'
+
+Capybara.app = Sinatra::Application
+
+RSpec.configure do |config|
+  # All of the following just ensures the database is wiped
+  # before every single test:
+
+  config.before(:suite) do
+    DatabaseCleaner.clean_with(:truncation)
+    DatabaseCleaner.strategy = :truncation
+  end
+
+  config.before(:each) do
+    DatabaseCleaner.start
+  end
+
+  config.after(:each) do
+    DatabaseCleaner.clean
+  end
+end