Make subjects explicit

spec/services/error_tracking/issue_details_service_spec.rb

@@ -5,6 +5,8 @@ require 'spec_helper'
 describe ErrorTracking::IssueDetailsService do
   include_context 'sentry error tracking context'
 
+  subject { described_class.new(project, user) }
+
   describe '#execute' do
     context 'with authorized user' do
       context 'when issue_details returns a detailed error' do

spec/services/error_tracking/issue_latest_event_service_spec.rb

@@ -5,6 +5,8 @@ require 'spec_helper'
 describe ErrorTracking::IssueLatestEventService do
   include_context 'sentry error tracking context'
 
+  subject { described_class.new(project, user) }
+
   describe '#execute' do
     context 'with authorized user' do
       context 'when issue_latest_event returns an error event' do

spec/support/shared_contexts/sentry_error_tracking_shared_context.rb

@@ -9,8 +9,6 @@ shared_context 'sentry error tracking context' do
   let(:params) { {} }
   let(:result) { subject.execute }
 
-  subject { described_class.new(project, user, params) }
-
   let(:error_tracking_setting) do
     create(:project_error_tracking_setting, api_url: sentry_url, token: token, project: project)
   end