Resolves rubocop offense Performance/Count

.rubocop_todo.yml

@@ -266,19 +266,6 @@ Performance/CollectionLiteralInLoop:
 Performance/ConstantRegexp:
   Enabled: false
 
-# Offense count: 18
-# Cop supports --auto-correct.
-Performance/Count:
-  Exclude:
-    - 'app/helpers/groups_helper.rb'
-    - 'app/services/merge_requests/add_context_service.rb'
-    - 'ee/lib/gitlab/graphql/aggregations/epics/epic_node.rb'
-    - 'lib/gitlab/sidekiq_status.rb'
-    - 'spec/lib/gitlab/conflict/file_spec.rb'
-    - 'spec/lib/gitlab/git/tree_spec.rb'
-    - 'spec/models/ci/build_spec.rb'
-    - 'spec/support_specs/helpers/active_record/query_recorder_spec.rb'
-
 # Offense count: 14
 # Cop supports --auto-correct.
 # Configuration parameters: SafeMultiline.

app/helpers/groups_helper.rb

@@ -141,9 +141,9 @@ module GroupsHelper
   def projects_lfs_status(group)
     lfs_status =
       if group.lfs_enabled?
-        group.projects.select(&:lfs_enabled?).size
+        group.projects.count(&:lfs_enabled?)
       else
-        group.projects.reject(&:lfs_enabled?).size
+        group.projects.count { |project| !project.lfs_enabled? }
       end
 
     size = group.projects.size

app/services/merge_requests/add_context_service.rb

@@ -50,7 +50,7 @@ module MergeRequests
     def duplicates
       existing_oids = merge_request.merge_request_context_commits.map { |commit| commit.sha.to_s }
       existing_oids.select do |existing_oid|
-        commit_ids.select { |commit_id| existing_oid.start_with?(commit_id) }.count > 0
+        commit_ids.count { |commit_id| existing_oid.start_with?(commit_id) } > 0
       end
     end
 

changelogs/unreleased/pl-rubocop-todo-count.yml

+---
+title: Resolve offense Performance/Count
+merge_request: 57007
+author: Shubham Kumar (@imskr)
+type: fixed

ee/lib/gitlab/graphql/aggregations/epics/epic_node.rb

@@ -88,7 +88,7 @@ module Gitlab
             # {iid: 1, epic_state_id: 1, issues_count: 1, issues_weight_sum: 2, parent_id: nil, issues_state_id: 2}
             if type == EPIC_TYPE
               # can only be COUNT
-              children.select { |node| node.epic_state_id == state }.count
+              children.count { |node| node.epic_state_id == state }
             else
               matching_record = epic_info_flat_list.find do |record|
                 record[:issues_state_id] == state

lib/gitlab/sidekiq_status.rb

@@ -66,7 +66,7 @@ module Gitlab
     def self.num_running(job_ids)
       responses = self.job_status(job_ids)
 
-      responses.select(&:present?).count
+      responses.count(&:present?)
     end
 
     # Returns the number of jobs that have completed.

spec/lib/gitlab/conflict/file_spec.rb

@@ -298,12 +298,12 @@ RSpec.describe Gitlab::Conflict::File do
       end
 
       it 'creates context sections of the correct length' do
-        expect(sections[0][:lines].reject(&:type).length).to eq(3)
-        expect(sections[2][:lines].reject(&:type).length).to eq(3)
-        expect(sections[3][:lines].reject(&:type).length).to eq(3)
-        expect(sections[5][:lines].reject(&:type).length).to eq(3)
-        expect(sections[6][:lines].reject(&:type).length).to eq(3)
-        expect(sections[8][:lines].reject(&:type).length).to eq(1)
+        expect(sections[0][:lines].count { |line| line.type.nil? }).to eq(3)
+        expect(sections[2][:lines].count { |line| line.type.nil? }).to eq(3)
+        expect(sections[3][:lines].count { |line| line.type.nil? }).to eq(3)
+        expect(sections[5][:lines].count { |line| line.type.nil? }).to eq(3)
+        expect(sections[6][:lines].count { |line| line.type.nil? }).to eq(3)
+        expect(sections[8][:lines].count { |line| line.type.nil? }).to eq(1)
       end
     end
   end

spec/lib/gitlab/git/tree_spec.rb

@@ -10,9 +10,9 @@ RSpec.describe Gitlab::Git::Tree, :seed_helper do
 
     it { expect(tree).to be_kind_of Array }
     it { expect(tree.empty?).to be_falsey }
-    it { expect(tree.select(&:dir?).size).to eq(2) }
-    it { expect(tree.select(&:file?).size).to eq(10) }
-    it { expect(tree.select(&:submodule?).size).to eq(2) }
+    it { expect(tree.count(&:dir?)).to eq(2) }
+    it { expect(tree.count(&:file?)).to eq(10) }
+    it { expect(tree.count(&:submodule?)).to eq(2) }
 
     it 'returns an empty array when called with an invalid ref' do
       expect(described_class.where(repository, 'foobar-does-not-exist')).to eq([])

spec/models/ci/build_spec.rb

@@ -1132,7 +1132,7 @@ RSpec.describe Ci::Build do
       it "executes UPDATE query" do
         recorded = ActiveRecord::QueryRecorder.new { subject }
 
-        expect(recorded.log.select { |l| l.match?(/UPDATE.*ci_builds/) }.count).to eq(1)
+        expect(recorded.log.count { |l| l.match?(/UPDATE.*ci_builds/) }).to eq(1)
       end
     end
 
@@ -1140,7 +1140,7 @@ RSpec.describe Ci::Build do
       it 'does not execute UPDATE query' do
         recorded = ActiveRecord::QueryRecorder.new { subject }
 
-        expect(recorded.log.select { |l| l.match?(/UPDATE.*ci_builds/) }.count).to eq(0)
+        expect(recorded.log.count { |l| l.match?(/UPDATE.*ci_builds/) }).to eq(0)
       end
     end
   end