use #described_class, as suggested by RuboCop

spec/policies/admin/dashboard_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe Admin::DashboardPolicy do
-  subject { Admin::DashboardPolicy }
+  subject { described_class }
 
   permissions :show? do
     it 'grants access to admins' do

spec/policies/application_policy_spec.rb

@@ -4,7 +4,7 @@ describe ApplicationPolicy do
   describe '#initialize' do
     context 'without a user' do
       it 'raises an error' do
-        expect { ApplicationPolicy.new(nil, nil) }.to raise_error(Pundit::NotAuthorizedError)
+        expect { described_class.new(nil, nil) }.to raise_error(Pundit::NotAuthorizedError)
       end
     end
   end

spec/policies/code_ocean/file_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe CodeOcean::FilePolicy do
-  subject { CodeOcean::FilePolicy }
+  subject { described_class }
 
   permissions :create? do
     context 'as part of an exercise' do

spec/policies/consumer_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe ConsumerPolicy do
-  subject { ConsumerPolicy }
+  subject { described_class }
 
   [:create?, :destroy?, :edit?, :index?, :new?, :show?, :update?].each do |action|
     permissions(action) do

spec/policies/error_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe ErrorPolicy do
-  subject { ErrorPolicy }
+  subject { described_class }
 
   let(:error) { FactoryGirl.build(:error) }
 

spec/policies/execution_environment_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe ExecutionEnvironmentPolicy do
-  subject { ExecutionEnvironmentPolicy }
+  subject { described_class }
 
   let(:execution_environment) { FactoryGirl.build(:ruby) }
 

spec/policies/exercise_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe ExercisePolicy do
-  subject { ExercisePolicy }
+  subject { described_class }
 
   before(:all) do
     @exercise = FactoryGirl.build(:dummy, team: FactoryGirl.create(:team))

spec/policies/external_user_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe ExternalUserPolicy do
-  subject { ExternalUserPolicy }
+  subject { described_class }
 
   [:create?, :destroy?, :edit?, :index?, :new?, :show?, :update?].each do |action|
     permissions(action) do

spec/policies/file_type_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe FileTypePolicy do
-  subject { FileTypePolicy }
+  subject { described_class }
 
   let(:file_type) { FactoryGirl.build(:dot_rb) }
 

spec/policies/hint_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe HintPolicy do
-  subject { HintPolicy }
+  subject { described_class }
 
   let(:hint) { FactoryGirl.build(:ruby_no_method_error) }
 

spec/policies/internal_user_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe InternalUserPolicy do
-  subject { InternalUserPolicy }
+  subject { described_class }
 
   [:create?, :edit?, :index?, :new?, :show?, :update?].each do |action|
     permissions(action) do

spec/policies/submission_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe SubmissionPolicy do
-  subject { SubmissionPolicy }
+  subject { described_class }
 
   permissions :create? do
     it 'grants access to anyone' do

spec/policies/team_policy_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe TeamPolicy do
-  subject { TeamPolicy }
+  subject { described_class }
 
   let(:team) { FactoryGirl.build(:team) }