Align project files with CodeHarbor

Since both projects are developed together and by the same team, we also want to have the same code structure and utility methods available in both projects. Therefore, this commit changes many files, but without a functional change.

spec/helpers/admin/dashboard_helper_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe Admin::DashboardHelper do
+RSpec.describe Admin::DashboardHelper do
   before do
     create(:ruby)
     dcp = class_double Runner::Strategy::DockerContainerPool

spec/helpers/application_helper_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe ApplicationHelper do
+RSpec.describe ApplicationHelper do
   describe '#code_tag' do
     context 'with code' do
       let(:code) { 'puts 42' }
@@ -80,7 +80,7 @@ describe ApplicationHelper do
   end
 
   describe '#row' do
-    let(:html) { row(label: 'foo', value: 42) }
+    let(:html) { row(label: 'shared.show', value: 42) }
 
     it "builds nested 'div' tags" do
       expect(html).to have_css('div.attribute-row.row div.col-md-3 + div.col-md-9')

spec/helpers/authenticated_url_helper_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe AuthenticatedUrlHelper do
+RSpec.describe AuthenticatedUrlHelper do
   describe '#add_query_parameters' do
     it 'adds the given parameters to the given url' do
       expect(described_class.add_query_parameters(root_url, {foo: 'bar'})).to eq(root_url(foo: 'bar'))

spec/helpers/exercise_helper_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe ExerciseHelper do
+RSpec.describe ExerciseHelper do
   describe '#embedding_parameters' do
     let(:exercise) { build(:dummy) }
 

spec/helpers/yaml_spec.rb

@@ -4,7 +4,7 @@ require 'find'
 require 'active_support'
 require 'rails'
 
-describe 'yaml config files' do
+RSpec.describe 'yaml config files' do
   Find.find(__dir__, 'config') do |path|
     next unless /.*.\.yml/.match?(path)