Speed up projects merge requests controller specs

.rubocop_todo.yml

@@ -842,7 +842,6 @@ Rails/SaveBang:
     - 'spec/controllers/projects/imports_controller_spec.rb'
     - 'spec/controllers/projects/issues_controller_spec.rb'
     - 'spec/controllers/projects/labels_controller_spec.rb'
-    - 'spec/controllers/projects/merge_requests_controller_spec.rb'
     - 'spec/controllers/projects/milestones_controller_spec.rb'
     - 'spec/controllers/projects/notes_controller_spec.rb'
     - 'spec/controllers/projects/pipelines_controller_spec.rb'

spec/controllers/projects/merge_requests_controller_spec.rb

@@ -6,14 +6,10 @@ RSpec.describe Projects::MergeRequestsController do
   include ProjectForksHelper
   include Gitlab::Routing
 
-  let(:project) { create(:project, :repository) }
-  let(:user)    { project.owner }
+  let_it_be_with_refind(:project) { create(:project, :repository) }
+  let_it_be_with_reload(:project_public_with_private_builds) { create(:project, :repository, :public, :builds_private) }
+  let(:user) { project.owner }
   let(:merge_request) { create(:merge_request_with_diffs, target_project: project, source_project: project) }
-  let(:merge_request_with_conflicts) do
-    create(:merge_request, source_branch: 'conflict-resolvable', target_branch: 'conflict-start', source_project: project, merge_status: :unchecked) do |mr|
-      mr.mark_as_unmergeable
-    end
-  end
 
   before do
     sign_in(user)
@@ -107,7 +103,7 @@ RSpec.describe Projects::MergeRequestsController do
         render_views
 
         it 'renders merge request page' do
-          merge_request.merge_request_diff.destroy
+          merge_request.merge_request_diff.destroy!
 
           go(format: :html)
 
@@ -147,7 +143,7 @@ RSpec.describe Projects::MergeRequestsController do
         let(:new_project) { create(:project) }
 
         before do
-          project.route.destroy
+          project.route.destroy!
           new_project.redirect_routes.create!(path: project.full_path)
           new_project.add_developer(user)
         end
@@ -359,12 +355,11 @@ RSpec.describe Projects::MergeRequestsController do
     end
 
     context 'there is no source project' do
-      let(:project) { create(:project, :repository) }
       let(:forked_project) { fork_project_with_submodules(project) }
       let!(:merge_request) { create(:merge_request, source_project: forked_project, source_branch: 'add-submodule-version-bump', target_branch: 'master', target_project: project) }
 
       before do
-        forked_project.destroy
+        forked_project.destroy!
       end
 
       it 'closes MR without errors' do
@@ -435,7 +430,7 @@ RSpec.describe Projects::MergeRequestsController do
 
     context 'when the merge request is not mergeable' do
       before do
-        merge_request.update(title: "WIP: #{merge_request.title}")
+        merge_request.update!(title: "WIP: #{merge_request.title}")
 
         post :merge, params: base_params
       end
@@ -475,7 +470,7 @@ RSpec.describe Projects::MergeRequestsController do
 
       context 'when squash is passed as 1' do
         it 'updates the squash attribute on the MR to true' do
-          merge_request.update(squash: false)
+          merge_request.update!(squash: false)
           merge_with_sha(squash: '1')
 
           expect(merge_request.reload.squash_on_merge?).to be_truthy
@@ -484,7 +479,7 @@ RSpec.describe Projects::MergeRequestsController do
 
       context 'when squash is passed as 0' do
         it 'updates the squash attribute on the MR to false' do
-          merge_request.update(squash: true)
+          merge_request.update!(squash: true)
           merge_with_sha(squash: '0')
 
           expect(merge_request.reload.squash_on_merge?).to be_falsey
@@ -547,7 +542,7 @@ RSpec.describe Projects::MergeRequestsController do
 
           context 'and head pipeline is not the current one' do
             before do
-              head_pipeline.update(sha: 'not_current_sha')
+              head_pipeline.update!(sha: 'not_current_sha')
             end
 
             it 'returns :failed' do
@@ -667,9 +662,9 @@ RSpec.describe Projects::MergeRequestsController do
     end
 
     context "when the user is owner" do
-      let(:owner)     { create(:user) }
-      let(:namespace) { create(:namespace, owner: owner) }
-      let(:project)   { create(:project, :repository, namespace: namespace) }
+      let_it_be(:owner)     { create(:user) }
+      let_it_be(:namespace) { create(:namespace, owner: owner) }
+      let_it_be(:project)   { create(:project, :repository, namespace: namespace) }
 
       before do
         sign_in owner
@@ -765,7 +760,7 @@ RSpec.describe Projects::MergeRequestsController do
     end
 
     context 'with private builds on a public project' do
-      let(:project) { create(:project, :repository, :public, :builds_private) }
+      let(:project) { project_public_with_private_builds }
 
       context 'for a project owner' do
         it 'responds with serialized pipelines' do
@@ -813,7 +808,7 @@ RSpec.describe Projects::MergeRequestsController do
         context 'with public builds' do
           let(:forked_project) do
             fork_project(project, fork_user, repository: true).tap do |new_project|
-              new_project.project_feature.update(builds_access_level: ProjectFeature::ENABLED)
+              new_project.project_feature.update!(builds_access_level: ProjectFeature::ENABLED)
             end
           end
 
@@ -855,7 +850,7 @@ RSpec.describe Projects::MergeRequestsController do
   end
 
   describe 'GET exposed_artifacts' do
-    let(:merge_request) do
+    let_it_be(:merge_request) do
       create(:merge_request,
         :with_merge_request_pipeline,
         target_project: project,
@@ -993,7 +988,7 @@ RSpec.describe Projects::MergeRequestsController do
   end
 
   describe 'GET coverage_reports' do
-    let(:merge_request) do
+    let_it_be(:merge_request) do
       create(:merge_request,
         :with_merge_request_pipeline,
         target_project: project,
@@ -1123,7 +1118,7 @@ RSpec.describe Projects::MergeRequestsController do
   end
 
   describe 'GET terraform_reports' do
-    let(:merge_request) do
+    let_it_be(:merge_request) do
       create(:merge_request,
         :with_merge_request_pipeline,
         target_project: project,
@@ -1271,7 +1266,7 @@ RSpec.describe Projects::MergeRequestsController do
   end
 
   describe 'GET test_reports' do
-    let(:merge_request) do
+    let_it_be(:merge_request) do
       create(:merge_request,
         :with_diffs,
         :with_merge_request_pipeline,
@@ -1382,7 +1377,7 @@ RSpec.describe Projects::MergeRequestsController do
   end
 
   describe 'GET accessibility_reports' do
-    let(:merge_request) do
+    let_it_be(:merge_request) do
       create(:merge_request,
         :with_diffs,
         :with_merge_request_pipeline,
@@ -1419,7 +1414,7 @@ RSpec.describe Projects::MergeRequestsController do
     end
 
     context 'permissions on a public project with private CI/CD' do
-      let(:project) { create(:project, :repository, :public, :builds_private) }
+      let(:project) { project_public_with_private_builds }
       let(:accessibility_comparison) { { status: :parsed, data: { summary: 1 } } }
 
       context 'while signed out' do
@@ -1505,7 +1500,7 @@ RSpec.describe Projects::MergeRequestsController do
   describe 'POST remove_wip' do
     before do
       merge_request.title = merge_request.wip_title
-      merge_request.save
+      merge_request.save!
 
       post :remove_wip,
         params: {
@@ -1626,7 +1621,7 @@ RSpec.describe Projects::MergeRequestsController do
       it 'links to the environment on that project', :sidekiq_might_not_need_inline do
         get_ci_environments_status
 
-        expect(json_response.first['url']).to match /#{forked.full_path}/
+        expect(json_response.first['url']).to match(/#{forked.full_path}/)
       end
 
       context "when environment_target is 'merge_commit'", :sidekiq_might_not_need_inline do
@@ -1653,7 +1648,7 @@ RSpec.describe Projects::MergeRequestsController do
             get_ci_environments_status(environment_target: 'merge_commit')
 
             expect(response).to have_gitlab_http_status(:ok)
-            expect(json_response.first['url']).to match /#{project.full_path}/
+            expect(json_response.first['url']).to match(/#{project.full_path}/)
           end
         end
       end
@@ -1773,7 +1768,7 @@ RSpec.describe Projects::MergeRequestsController do
 
       context 'with project member visibility on a public project' do
         let(:user)    { create(:user) }
-        let(:project) { create(:project, :repository, :public, :builds_private) }
+        let(:project) { project_public_with_private_builds }
 
         it 'returns pipeline data to project members' do
           project.add_developer(user)