Revert "Merge branch 'revert-04c3c6dd' into 'master'"

This reverts commit 744f1f2e7037f5c70c3168d9e2e89b1c327465d2, reversing
changes made to c4d930e5f54e7da07c80cc028dfc0f5c08719146.

7 files changed, 109 insertions, 1 deletions

diff --git a/spec/lib/quality/test_level_spec.rb b/spec/lib/quality/test_level_spec.rb
new file mode 100644
index 00000000000..3465c3a050b
--- /dev/null
+++ b/spec/lib/quality/test_level_spec.rb
@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+
+RSpec.describe Quality::TestLevel do
+  describe '#pattern' do
+    context 'when level is unit' do
+      it 'returns a pattern' do
+        expect(subject.pattern(:unit))
+          .to eq("spec/{bin,config,db,dependencies,factories,finders,frontend,graphql,helpers,initializers,javascripts,lib,migrations,models,policies,presenters,rack_servers,routing,rubocop,serializers,services,sidekiq,tasks,uploaders,validators,views,workers,elastic_integration}{,/**/}*_spec.rb")
+      end
+    end
+
+    context 'when level is integration' do
+      it 'returns a pattern' do
+        expect(subject.pattern(:integration))
+          .to eq("spec/{controllers,mailers,requests}{,/**/}*_spec.rb")
+      end
+    end
+
+    context 'when level is system' do
+      it 'returns a pattern' do
+        expect(subject.pattern(:system))
+          .to eq("spec/{features}{,/**/}*_spec.rb")
+      end
+    end
+
+    context 'with a prefix' do
+      it 'returns a pattern' do
+        expect(described_class.new('ee/').pattern(:system))
+          .to eq("ee/spec/{features}{,/**/}*_spec.rb")
+      end
+    end
+
+    describe 'performance' do
+      it 'memoizes the pattern for a given level' do
+        expect(subject.pattern(:system).object_id).to eq(subject.pattern(:system).object_id)
+      end
+
+      it 'freezes the pattern for a given level' do
+        expect(subject.pattern(:system)).to be_frozen
+      end
+    end
+  end
+
+  describe '#regexp' do
+    context 'when level is unit' do
+      it 'returns a regexp' do
+        expect(subject.regexp(:unit))
+          .to eq(%r{spec/(bin|config|db|dependencies|factories|finders|frontend|graphql|helpers|initializers|javascripts|lib|migrations|models|policies|presenters|rack_servers|routing|rubocop|serializers|services|sidekiq|tasks|uploaders|validators|views|workers|elastic_integration)})
+      end
+    end
+
+    context 'when level is integration' do
+      it 'returns a regexp' do
+        expect(subject.regexp(:integration))
+          .to eq(%r{spec/(controllers|mailers|requests)})
+      end
+    end
+
+    context 'when level is system' do
+      it 'returns a regexp' do
+        expect(subject.regexp(:system))
+          .to eq(%r{spec/(features)})
+      end
+    end
+
+    context 'with a prefix' do
+      it 'returns a regexp' do
+        expect(described_class.new('ee/').regexp(:system))
+          .to eq(%r{ee/spec/(features)})
+      end
+    end
+
+    describe 'performance' do
+      it 'memoizes the regexp for a given level' do
+        expect(subject.regexp(:system).object_id).to eq(subject.regexp(:system).object_id)
+      end
+
+      it 'freezes the regexp for a given level' do
+        expect(subject.regexp(:system)).to be_frozen
+      end
+    end
+  end
+
+  describe '#level_for' do
+    it 'returns the correct level for a unit test' do
+      expect(subject.level_for('spec/models/abuse_report_spec.rb')).to eq(:unit)
+    end
+
+    it 'returns the correct level for an integration test' do
+      expect(subject.level_for('spec/mailers/abuse_report_mailer_spec.rb')).to eq(:integration)
+    end
+
+    it 'returns the correct level for a system test' do
+      expect(subject.level_for('spec/features/abuse_report_spec.rb')).to eq(:system)
+    end
+
+    it 'raises an error for an unknown level' do
+      expect { subject.level_for('spec/unknown/foo_spec.rb') }
+        .to raise_error(described_class::UnknownTestLevelError,
+          %r{Test level for spec/unknown/foo_spec.rb couldn't be set. Please rename the file properly or change the test level detection regexes in .+/lib/quality/test_level.rb.})
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 69589c9aa33..390a869d93f 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -44,6 +44,8 @@ Dir[Rails.root.join("spec/support/shared_contexts/*.rb")].each { |f| require f }
 Dir[Rails.root.join("spec/support/shared_examples/*.rb")].each { |f| require f }
 Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
 
+quality_level = Quality::TestLevel.new
+
 RSpec.configure do |config|
   config.use_transactional_fixtures = false
   config.use_instantiated_fixtures  = false
@@ -55,9 +57,10 @@ RSpec.configure do |config|
   config.infer_spec_type_from_file_location!
   config.full_backtrace = !!ENV['CI']
 
-  config.define_derived_metadata(file_path: %r{/spec/}) do |metadata|
+  config.define_derived_metadata(file_path: %r{(ee)?/spec/.+_spec\.rb\z}) do |metadata|
     location = metadata[:location]
 
+    metadata[:level] = quality_level.level_for(location)
     metadata[:api] = true if location =~ %r{/spec/requests/api/}
 
     # do not overwrite type if it's already set
diff --git a/spec/support/shared_examples/finders/assignees_filter_spec.rb b/spec/support/shared_examples/finders/assignees_filter_shared_examples.rb
index 782a2d97746..782a2d97746 100644
--- a/spec/support/shared_examples/finders/assignees_filter_spec.rb
+++ b/spec/support/shared_examples/finders/assignees_filter_shared_examples.rb
diff --git a/spec/support/shared_examples/models/atomic_internal_id_spec.rb b/spec/support/shared_examples/models/atomic_internal_id_shared_examples.rb
index a248f60d23e..a248f60d23e 100644
--- a/spec/support/shared_examples/models/atomic_internal_id_spec.rb
+++ b/spec/support/shared_examples/models/atomic_internal_id_shared_examples.rb
diff --git a/spec/support/shared_examples/models/chat_service_spec.rb b/spec/support/shared_examples/models/chat_service_shared_examples.rb
index 0a302e7d030..0a302e7d030 100644
--- a/spec/support/shared_examples/models/chat_service_spec.rb
+++ b/spec/support/shared_examples/models/chat_service_shared_examples.rb
diff --git a/spec/support/shared_examples/models/update_project_statistics_spec.rb b/spec/support/shared_examples/models/update_project_statistics_shared_examples.rb
index 7a04e940ee5..7a04e940ee5 100644
--- a/spec/support/shared_examples/models/update_project_statistics_spec.rb
+++ b/spec/support/shared_examples/models/update_project_statistics_shared_examples.rb
diff --git a/spec/support/shared_examples/requests/api/issues_shared_example_spec.rb b/spec/support/shared_examples/requests/api/issues_shared_examples.rb
index 1133e95e44e..1133e95e44e 100644
--- a/spec/support/shared_examples/requests/api/issues_shared_example_spec.rb
+++ b/spec/support/shared_examples/requests/api/issues_shared_examples.rb