test(ServerRendering) test ManifestContainer

Author: rmosolgo

lib/react/server_rendering/manifest_container.rb

@@ -10,7 +10,7 @@ def initialize
       end
 
       def find_asset(logical_path)
-        asset_path = manifest.assets[logical_path] || raise("No compiled asset for #{logical_path}, was it precompiled?")
+        asset_path = @manifest.assets[logical_path] || raise("No compiled asset for #{logical_path}, was it precompiled?")
         asset_full_path = ::Rails.root.join("public", @manifest.directory, asset_path)
         File.read(asset_full_path)
       end

test/react/server_rendering/manifest_container_test.rb

@@ -0,0 +1,24 @@
+require "test_helper"
+
+class ManifestContainerTest < ActiveSupport::TestCase
+  def setup
+    precompile_assets
+
+    # Make a new manifest since assets weren't compiled before
+    config = Rails.application.config
+    path = File.join(config.paths['public'].first, config.assets.prefix)
+    new_manifest = Sprockets::Manifest.new(Rails.application.assets, path, config.assets.manifest)
+    Rails.application.assets_manifest = new_manifest
+
+    @manifest_container = React::ServerRendering::ManifestContainer.new
+  end
+
+  def teardown
+    clear_precompiled_assets
+  end
+
+  def test_find_asset_gets_asset_contents
+    application_js_content = @manifest_container.find_asset("application.js")
+    assert(application_js_content.length > 50000, "It's the compiled file")
+  end
+end

test/react_test.rb

@@ -26,12 +26,9 @@ class ReactTest < ActionDispatch::IntegrationTest
 
   test 'precompiling assets works' do
     begin
-      ENV['RAILS_GROUPS'] = 'assets' # required for Rails 3.2
-      Dummy::Application.load_tasks
-      Rake::Task['assets:precompile'].invoke
-      FileUtils.rm_r(File.expand_path("../dummy/public/assets", __FILE__))
+      precompile_assets
     ensure
-      ENV.delete('RAILS_GROUPS')
+      clear_precompiled_assets
     end
   end
 

test/test_helper.rb

@@ -39,6 +39,18 @@ def manually_expire_asset(asset_name)
   def asset.fresh?(env); false; end
 end
 
+def precompile_assets
+  ENV['RAILS_GROUPS'] = 'assets' # required for Rails 3.2
+  Dummy::Application.load_tasks
+  Rake::Task['assets:precompile'].reenable
+  Rake::Task['assets:precompile'].invoke
+end
+
+def clear_precompiled_assets
+  FileUtils.rm_r(File.expand_path("../dummy/public/assets", __FILE__))
+  ENV.delete('RAILS_GROUPS')
+end
+
 # Load support files
 Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].each { |f| require f }