Reduce database calls on CI Templates specs

This change replaces `let` with `let_it_be` to reduce unnecessary number
of database calls on CI Templates specs. We also replace all instances
of `allow_any_instance_of` stubs with `allow_next_instance_off`
according to the Rubocop lint rules.

ee/spec/lib/gitlab/ci/templates/Jobs/browser_performance_testing_gitlab_ci_yaml_spec.rb

@@ -19,7 +19,7 @@ RSpec.describe 'Jobs/Browser-Performance-Testing.gitlab-ci.yml' do
   end
 
   describe 'the created pipeline' do
-    let(:project) do
+    let_it_be(:project) do
       create(:project, :repository, variables: [
         build(:ci_variable, key: 'CI_KUBERNETES_ACTIVE', value: 'true')
       ])
@@ -35,7 +35,9 @@ RSpec.describe 'Jobs/Browser-Performance-Testing.gitlab-ci.yml' do
     before do
       stub_ci_pipeline_yaml_file(template)
 
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 

ee/spec/lib/gitlab/ci/templates/Jobs/dast_default_branch_gitlab_ci_yaml_spec.rb

@@ -22,7 +22,7 @@ RSpec.describe 'Jobs/DAST-Default-Branch-Deploy.gitlab-ci.yml' do
   end
 
   describe 'the created pipeline' do
-    let(:project) do
+    let_it_be(:project) do
       create(:project, :repository, variables: [
         build(:ci_variable, key: 'CI_KUBERNETES_ACTIVE', value: 'true')
       ])
@@ -37,8 +37,9 @@ RSpec.describe 'Jobs/DAST-Default-Branch-Deploy.gitlab-ci.yml' do
 
     before do
       stub_ci_pipeline_yaml_file(template)
-
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 
@@ -53,7 +54,7 @@ RSpec.describe 'Jobs/DAST-Default-Branch-Deploy.gitlab-ci.yml' do
     end
 
     context 'when project has Ultimate license' do
-      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+      let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
       before do
         allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/Jobs/load_performance_testing_gitlab_ci_yaml_spec.rb

@@ -19,7 +19,7 @@ RSpec.describe 'Jobs/Load-Performance-Testing.gitlab-ci.yml' do
   end
 
   describe 'the created pipeline' do
-    let(:project) do
+    let_it_be(:project) do
       create(:project, :repository, variables: [
         build(:ci_variable, key: 'CI_KUBERNETES_ACTIVE', value: 'true')
       ])
@@ -34,8 +34,9 @@ RSpec.describe 'Jobs/Load-Performance-Testing.gitlab-ci.yml' do
 
     before do
       stub_ci_pipeline_yaml_file(template)
-
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 

ee/spec/lib/gitlab/ci/templates/Verify/browser_performance_testing_gitlab_ci_yaml_spec.rb

@@ -19,9 +19,9 @@ RSpec.describe 'Verify/Browser-Performance.gitlab-ci.yml' do
   end
 
   describe 'the created pipeline', :clean_gitlab_redis_cache do
-    let(:project) { create(:project, :repository) }
-    let(:user) { project.owner }
+    let_it_be(:project) { create(:project, :repository) }
 
+    let(:user) { project.owner }
     let(:default_branch) { 'master' }
     let(:pipeline_ref) { default_branch }
     let(:service) { Ci::CreatePipelineService.new(project, user, ref: pipeline_ref) }
@@ -30,8 +30,9 @@ RSpec.describe 'Verify/Browser-Performance.gitlab-ci.yml' do
 
     before do
       stub_ci_pipeline_yaml_file(template)
-
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 

ee/spec/lib/gitlab/ci/templates/Verify/load_performance_testing_gitlab_ci_yaml_spec.rb

@@ -19,9 +19,9 @@ RSpec.describe 'Verify/Load-Performance-Testing.gitlab-ci.yml' do
   end
 
   describe 'the created pipeline', :clean_gitlab_redis_cache do
-    let(:project) { create(:project, :repository) }
-    let(:user) { project.owner }
+    let_it_be(:project) { create(:project, :repository) }
 
+    let(:user) { project.owner }
     let(:default_branch) { 'master' }
     let(:pipeline_ref) { default_branch }
     let(:service) { Ci::CreatePipelineService.new(project, user, ref: pipeline_ref) }
@@ -30,8 +30,9 @@ RSpec.describe 'Verify/Load-Performance-Testing.gitlab-ci.yml' do
 
     before do
       stub_ci_pipeline_yaml_file(template)
-
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 

ee/spec/lib/gitlab/ci/templates/api_fuzzing_gitlab_ci_yaml_spec.rb

@@ -18,27 +18,29 @@ RSpec.describe 'API-Fuzzing.gitlab-ci.yml' do
     # names between development and production is also quite small making it
     # easy to miss during review.
     it 'uses the production repository' do
-      expect( contents.include?(production_registry) ).to be true
+      expect(contents.include?(production_registry)).to be true
     end
 
     it 'doesn\'t use the staging repository' do
-      expect( contents.include?(staging_registry) ).to be false
+      expect(contents.include?(staging_registry)).to be false
     end
   end
 
   describe 'the created pipeline' do
+    let_it_be(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
+
     let(:default_branch) { 'master' }
     let(:pipeline_branch) { default_branch }
-    let(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
     let(:user) { project.owner }
-    let(:service) { Ci::CreatePipelineService.new(project, user, ref: pipeline_branch ) }
+    let(:service) { Ci::CreatePipelineService.new(project, user, ref: pipeline_branch) }
     let(:pipeline) { service.execute!(:push) }
     let(:build_names) { pipeline.builds.pluck(:name) }
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
-
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 
@@ -54,7 +56,7 @@ RSpec.describe 'API-Fuzzing.gitlab-ci.yml' do
     end
 
     context 'when project has Ultimate license' do
-      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+      let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
       before do
         allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/api_fuzzing_latest_gitlab_ci_yaml_spec.rb

@@ -20,31 +20,30 @@ RSpec.describe 'API-Fuzzing.latest.gitlab-ci.yml' do
     # names between development and production is also quite small making it
     # easy to miss during review.
     it 'uses the production repository' do
-      expect( contents.include?(production_registry) ).to be true
+      expect(contents.include?(production_registry)).to be true
     end
 
     it 'doesn\'t use the staging repository' do
-      expect( contents.include?(staging_registry) ).to be false
+      expect(contents.include?(staging_registry)).to be false
     end
   end
 
   describe 'the created pipeline' do
+    let_it_be(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
+
     let(:default_branch) { 'master' }
     let(:pipeline_branch) { default_branch }
-    let(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
     let(:user) { project.owner }
-    let(:service) { Ci::CreatePipelineService.new(project, user, ref: pipeline_branch ) }
+    let(:service) { Ci::CreatePipelineService.new(project, user, ref: pipeline_branch) }
     let(:pipeline) { service.execute!(:push) }
     let(:build_names) { pipeline.builds.pluck(:name) }
 
     context 'when no stages' do
       before do
         stub_ci_pipeline_yaml_file(template.content)
-
         allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
           allow(worker).to receive(:perform).and_return(true)
         end
-
         allow(project).to receive(:default_branch).and_return(default_branch)
       end
 
@@ -80,7 +79,7 @@ RSpec.describe 'API-Fuzzing.latest.gitlab-ci.yml' do
       end
 
       context 'when project has Ultimate license' do
-        let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+        let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
         before do
           allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/container_scanning_gitlab_ci_yaml_spec.rb

@@ -6,8 +6,9 @@ RSpec.describe 'Container-Scanning.gitlab-ci.yml' do
   subject(:template) { Gitlab::Template::GitlabCiYmlTemplate.find('Container-Scanning') }
 
   describe 'the created pipeline' do
+    let_it_be(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
+
     let(:default_branch) { 'master' }
-    let(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
     let(:user) { project.owner }
     let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master' ) }
     let(:pipeline) { service.execute!(:push) }
@@ -15,7 +16,9 @@ RSpec.describe 'Container-Scanning.gitlab-ci.yml' do
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 
@@ -26,7 +29,7 @@ RSpec.describe 'Container-Scanning.gitlab-ci.yml' do
     end
 
     context 'when project has Ultimate license' do
-      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+      let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
       before do
         allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/coverage_fuzzing_gitlab_ci_yaml_spec.rb

@@ -6,8 +6,9 @@ RSpec.describe 'Coverage-Fuzzing.gitlab-ci.yml' do
   subject(:template) { Gitlab::Template::GitlabCiYmlTemplate.find('Coverage-Fuzzing') }
 
   describe 'the created pipeline' do
+    let_it_be(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
+
     let(:default_branch) { 'master' }
-    let(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
     let(:user) { project.owner }
     let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master' ) }
     let(:pipeline) { service.execute!(:push) }
@@ -15,12 +16,14 @@ RSpec.describe 'Coverage-Fuzzing.gitlab-ci.yml' do
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 
     context 'when project has Ultimate license' do
-      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+      let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
       before do
         allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/dast_gitlab_ci_yaml_spec.rb

@@ -16,7 +16,9 @@ RSpec.describe 'DAST.gitlab-ci.yml' do
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 
@@ -27,7 +29,7 @@ RSpec.describe 'DAST.gitlab-ci.yml' do
     end
 
     context 'when project has Ultimate license' do
-      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+      let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
       let(:cluster) { create(:cluster, :project, :provided_by_gcp, projects: [project]) }
 
       before do

ee/spec/lib/gitlab/ci/templates/dast_latest_gitlab_ci_yaml_spec.rb

@@ -74,7 +74,7 @@ RSpec.describe 'DAST.latest.gitlab-ci.yml' do
         end
 
         context 'when project has Ultimate license' do
-          let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+          let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
           before do
             allow(License).to receive(:current).and_return(license)
@@ -109,7 +109,7 @@ RSpec.describe 'DAST.latest.gitlab-ci.yml' do
         end
 
         context 'when project has Ultimate license' do
-          let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+          let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
           before do
             allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/dependency_scanning_gitlab_ci_yaml_spec.rb

@@ -10,13 +10,15 @@ RSpec.describe 'Dependency-Scanning.gitlab-ci.yml' do
     let(:files) { { 'README.txt' => '' } }
     let(:project) { create(:project, :custom_repo, files: files) }
     let(:user) { project.owner }
-    let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master' ) }
+    let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master') }
     let(:pipeline) { service.execute!(:push) }
     let(:build_names) { pipeline.builds.pluck(:name) }
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 
@@ -27,7 +29,7 @@ RSpec.describe 'Dependency-Scanning.gitlab-ci.yml' do
     end
 
     context 'when project has Ultimate license' do
-      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+      let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
       before do
         allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/license_scanning_gitlab_ci_yaml_spec.rb

@@ -6,16 +6,19 @@ RSpec.describe 'License-Scanning.gitlab-ci.yml' do
   subject(:template) { Gitlab::Template::GitlabCiYmlTemplate.find('License-Scanning') }
 
   describe 'the created pipeline' do
+    let_it_be(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
+
     let(:default_branch) { 'master' }
-    let(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
     let(:user) { project.owner }
-    let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master' ) }
+    let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master') }
     let(:pipeline) { service.execute!(:push) }
     let(:build_names) { pipeline.builds.pluck(:name) }
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end
 
@@ -26,7 +29,7 @@ RSpec.describe 'License-Scanning.gitlab-ci.yml' do
     end
 
     context 'when project has Ultimate license' do
-      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+      let(:license) { build(:license, plan: License::ULTIMATE_PLAN) }
 
       before do
         allow(License).to receive(:current).and_return(license)

ee/spec/lib/gitlab/ci/templates/sast_gitlab_ci_yaml_spec.rb

@@ -10,13 +10,15 @@ RSpec.describe 'SAST.gitlab-ci.yml' do
     let(:files) { { 'README.txt' => '' } }
     let(:project) { create(:project, :custom_repo, files: files) }
     let(:user) { project.owner }
-    let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master' ) }
+    let(:service) { Ci::CreatePipelineService.new(project, user, ref: 'master') }
     let(:pipeline) { service.execute!(:push) }
     let(:build_names) { pipeline.builds.pluck(:name) }
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
-      allow_any_instance_of(Ci::BuildScheduleWorker).to receive(:perform).and_return(true)
+      allow_next_instance_of(Ci::BuildScheduleWorker) do |worker|
+        allow(worker).to receive(:perform).and_return(true)
+      end
       allow(project).to receive(:default_branch).and_return(default_branch)
     end