Remove filter from DescendantCountService

Remove usage of IssuesFinder, use Issue
directly.

changelogs/unreleased/196718-remove-filter-epic-counts.yml

+---
+title: Remove visibility check from epic descendant counts
+merge_request: 25975
+author:
+type: changed

ee/app/services/epics/descendant_count_service.rb

@@ -41,16 +41,13 @@ module Epics
 
     def issues_count
       strong_memoize(:issue_counts) do
-        IssuesFinder.new(current_user).execute.in_epics(accessible_epics).counts_by_state
+        Issue.in_epics(accessible_epics).counts_by_state
       end
     end
 
     def accessible_epics
       strong_memoize(:epics) do
-        epics = epic.base_and_descendants
-        epic_groups = Group.for_epics(epics)
-        groups = Group.groups_user_can_read_epics(epic_groups, current_user, same_root: true)
-        epics.in_selected_groups(groups)
+        epic.base_and_descendants
       end
     end
   end

ee/spec/services/epics/descendant_count_service_spec.rb

@@ -15,10 +15,14 @@ describe Epics::DescendantCountService do
   let_it_be(:issue2) { create(:issue, project: project, state: :closed) }
   let_it_be(:issue3) { create(:issue, project: project, state: :opened) }
   let_it_be(:issue4) { create(:issue, project: project, state: :closed) }
+  let_it_be(:issue5) { create(:issue, :confidential, project: project, state: :opened) }
+  let_it_be(:issue6) { create(:issue, :confidential, project: project, state: :closed) }
   let_it_be(:epic_issue1) { create(:epic_issue, epic: parent_epic, issue: issue1) }
   let_it_be(:epic_issue2) { create(:epic_issue, epic: parent_epic, issue: issue2) }
   let_it_be(:epic_issue3) { create(:epic_issue, epic: epic1, issue: issue3) }
   let_it_be(:epic_issue4) { create(:epic_issue, epic: epic2, issue: issue4) }
+  let_it_be(:epic_issue5) { create(:epic_issue, epic: epic1, issue: issue5) }
+  let_it_be(:epic_issue6) { create(:epic_issue, epic: epic2, issue: issue6) }
 
   subject { described_class.new(parent_epic, user) }
 
@@ -27,21 +31,10 @@ describe Epics::DescendantCountService do
       stub_licensed_features(epics: true)
     end
 
-    it 'does not count inaccessible epics' do
-      expect(subject.public_send(method)).to eq 0
-    end
-
-    context 'when authorized' do
-      before do
-        subgroup.add_developer(user)
-        project.add_developer(user)
-      end
-
-      it 'returns correct number of epics' do
+    it 'includes inaccessible epics' do
       expect(subject.public_send(method)).to eq expected_count
     end
   end
-  end
 
   describe '#opened_epics' do
     it_behaves_like 'descendants state count', :opened_epics, 1
@@ -52,10 +45,10 @@ describe Epics::DescendantCountService do
   end
 
   describe '#opened_issues' do
-    it_behaves_like 'descendants state count', :opened_issues, 2
+    it_behaves_like 'descendants state count', :opened_issues, 3
   end
 
   describe '#closed_issues' do
-    it_behaves_like 'descendants state count', :closed_issues, 2
+    it_behaves_like 'descendants state count', :closed_issues, 3
   end
 end