Wire up capybara & add simple feature spec for swagger-ui

.travis.yml

@@ -7,4 +7,8 @@ env:
   - "RAILS_VERSION=5.0.0"
 cache: bundler
 install: bundle update
+before_script:
+  - "export DISPLAY=:99.0"
+  - "sh -e /etc/init.d/xvfb start"
+  - sleep 3 # give xvfb some time to start
 script: ./ci/test.sh

Gemfile

@@ -25,6 +25,8 @@ group :test do
   gem 'test-unit'
   gem 'rspec-rails'
   gem 'generator_spec'
+  gem 'capybara'
+  gem 'capybara-webkit'
   gem 'rswag-specs', path: './rswag-specs'
 end
 

Gemfile.lock

@@ -51,6 +51,16 @@ GEM
     addressable (2.4.0)
     arel (3.0.3)
     builder (3.0.4)
+    capybara (2.10.1)
+      addressable
+      mime-types (>= 1.16)
+      nokogiri (>= 1.3.3)
+      rack (>= 1.0.0)
+      rack-test (>= 0.5.4)
+      xpath (~> 2.0)
+    capybara-webkit (1.1.0)
+      capybara (~> 2.0, >= 2.0.2)
+      json
     diff-lcs (1.2.5)
     erubis (2.7.0)
     execjs (2.7.0)
@@ -68,7 +78,10 @@ GEM
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.25.1)
+    mini_portile2 (2.1.0)
     multi_json (1.12.1)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     polyglot (0.3.5)
     power_assert (0.3.1)
     rack (1.4.7)
@@ -138,11 +151,15 @@ GEM
     tzinfo (0.3.51)
     uglifier (3.0.2)
       execjs (>= 0.3.0, < 3)
+    xpath (2.0.0)
+      nokogiri (~> 1.3)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  capybara
+  capybara-webkit
   generator_spec
   rails (= 3.2.22)
   rspec-rails

test-app/spec/features/swagger_ui_spec.rb

@@ -0,0 +1,12 @@
+require 'rails_helper'
+
+feature 'swagger-ui', js: true do
+
+  scenario 'browsing api-docs' do
+    visit '/api-docs'
+
+    expect(page).to have_content('GET /blogs Searches blogs')
+    expect(page).to have_content('POST /blogs Creates a blog')
+    expect(page).to have_content('GET /blogs/{id} Retrieves a blog')
+  end
+end

test-app/spec/rails_helper.rb

@@ -50,4 +50,6 @@ RSpec.configure do |config|
   config.filter_rails_from_backtrace!
   # arbitrary gems may also be filtered via:
   # config.filter_gems_from_backtrace("gem name")
+
+  Capybara.javascript_driver = :webkit
 end