Add end-to-end integration tests

.gitignore

@@ -1,3 +1,4 @@
 .rspec_status
 Gemfile.lock
 gemfiles/*.lock
+tmp/

README.md

@@ -173,7 +173,7 @@ RenderfulClient.render('your_entry_id')
 In order to integrate with Prismic, you will first need to add the `prismic.io` gem to your Gemfile:
 
 ```ruby
-gem 'prismic.io'
+gem 'prismic.io', require: 'prismic'
 ```
 
 Now make sure to install it:

lib/renderful/client.rb

@@ -4,7 +4,7 @@ module Renderful
   class Client
     attr_reader :provider, :components, :cache
 
-    def initialize(provider:, components:, cache: Cache::Null)
+    def initialize(provider:, components:, cache: Cache::Null.new)
       @provider = provider
       @components = components
       @cache = cache

renderful.gemspec

@@ -29,6 +29,7 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency 'appraisal', '~> 2.2'
   spec.add_development_dependency 'bundler', '~> 2.1'
+  spec.add_development_dependency 'capybara', '~> 3.32'
   spec.add_development_dependency 'combustion', '~> 1.1'
   spec.add_development_dependency 'contentful', '~> 2.11'
   spec.add_development_dependency 'gem-release', '~> 2.1'
@@ -40,4 +41,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rspec_junit_formatter', '~> 0.4.1'
   spec.add_development_dependency 'rubocop', '~> 0.79.0'
   spec.add_development_dependency 'rubocop-rspec', '~> 1.37'
+  spec.add_development_dependency 'vcr', '~> 5.1'
+  spec.add_development_dependency 'view_component', '~> 2.2'
+  spec.add_development_dependency 'webmock', '~> 3.8'
 end

spec/integration/contentful_spec.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Contentful integration test', type: :feature do
+  around do |example|
+    VCR.use_cassette('contentful', &example)
+  end
+
+  it 'renders Contentful entries' do
+    visit '/contentful'
+
+    expect(page.body.strip).to eq('Homepage')
+  end
+end

spec/integration/prismic_spec.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Prismic integration test', type: :feature do
+  around do |example|
+    VCR.use_cassette('prismic', &example)
+  end
+
+  it 'renders Contentful entries' do
+    visit '/prismic'
+
+    expect(page.body.strip).to eq('Homepage')
+  end
+end

spec/internal/app/components/page_component.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class PageComponent < ViewComponent::Base
+  def initialize(entry:, client:)
+    @entry = entry
+    @client = client
+  end
+
+  def call
+    normalized_fields[:title]
+  end
+
+  private
+
+  def normalized_fields
+    @normalized_fields ||= @entry.fields.with_indifferent_access.transform_values do |field|
+      field.respond_to?(:as_text) ? field.as_text : field
+    end
+  end
+end

spec/internal/app/controllers/pages_controller.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class PagesController < ActionController::Base
+  def prismic; end
+end

spec/internal/app/views/pages/contentful.html.erb

@@ -0,0 +1 @@
+<%= RenderfulContentfulClient.render('6pG1BlIIaL69l0YWcDI4I5', view_context: self) %>

spec/internal/app/views/pages/prismic.html.erb

@@ -0,0 +1 @@
+<%= RenderfulPrismicClient.render('XodtshAAACIACgDj', view_context: self) %>

spec/internal/config/initializers/renderful.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+RenderfulPrismicClient = Renderful::Client.new(
+  provider: Renderful::Provider::Prismic.new(prismic: Prismic.api(
+    'https://renderfultest.cdn.prismic.io/api',
+  )),
+  components: {
+    'page' => PageComponent,
+  },
+  cache: Rails.cache,
+)
+
+RenderfulContentfulClient = Renderful::Client.new(
+  provider: Renderful::Provider::Contentful.new(contentful: Contentful::Client.new(
+    space: 'secret_space_id',
+    access_token: 'secret_access_token'
+  )),
+  components: {
+    'page' => PageComponent,
+  },
+  cache: Rails.cache,
+)

spec/internal/config/routes.rb

@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
 Rails.application.routes.draw do
-  # Add your own routes here, or remove this file if you don't have need for it.
+  get 'prismic', to: 'pages#prismic'
+  get 'contentful', to: 'pages#contentful'
 end

spec/spec_helper.rb

@@ -1,10 +1,16 @@
 # frozen_string_literal: true
 
+require 'prismic'
+require 'view_component'
+
 require 'combustion'
 Combustion.initialize! :action_controller, :action_view, :sprockets
 
 require 'rspec/rails'
+require 'capybara/rspec'
 require 'renderful'
+require 'webmock'
+require 'vcr'
 
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure
@@ -17,3 +23,8 @@
     c.syntax = :expect
   end
 end
+
+VCR.configure do |config|
+  config.cassette_library_dir = "spec/vcr_cassettes"
+  config.hook_into :webmock
+end