Allow ancestor group milestones for issue boards

We already show these milestones in the dropdown so we
should allow setting of these milestones

ee/app/finders/boards/milestones_finder.rb

@@ -20,12 +20,12 @@ module Boards
       finder_params =
         if parent.is_a?(Group)
           {
-            group_ids: parent.self_and_ancestors_ids
+            group_ids: parent.self_and_ancestors
           }
         else
           {
             project_ids: [parent.id],
-            group_ids: parent.group&.self_and_ancestors_ids
+            group_ids: parent.group&.self_and_ancestors
           }
         end
 

ee/app/services/ee/boards/base_service.rb

@@ -25,9 +25,9 @@ module EE
         finder_params =
           case parent
           when Group
-            { group_ids: [parent.id] }
+            { group_ids: parent.self_and_ancestors }
           when Project
-            { project_ids: [parent.id], group_ids: [parent.group&.id] }
+            { project_ids: [parent.id], group_ids: parent.group&.self_and_ancestors }
           end
 
         milestone = ::MilestonesFinder.new(finder_params).find_by(id: milestone_id)

ee/changelogs/unreleased/12469-can-t-assign-group-milestone-to-project-issue-board.yml

+---
+title: Allow ancestor group milestones in issue board scope
+merge_request: 15858
+author:
+type: fixed

ee/spec/services/boards/create_service_spec.rb

 require 'spec_helper'
 
 describe Boards::CreateService, services: true do
-  shared_examples 'board with milestone predefined scope' do
-    let(:project) { create(:project) }
-
-    it 'creates board with correct milestone' do
-      stub_licensed_features(scoped_issue_board: true)
-
-      board = described_class
-        .new(project, double, milestone_id: milestone_class.id)
-        .execute
-
-      expect(board.reload.milestone).to eq(milestone_class)
-    end
-  end
-
   shared_examples 'boards create service' do
     context 'With the feature available' do
       before do
@@ -85,76 +71,8 @@ describe Boards::CreateService, services: true do
       end
     end
 
-    it_behaves_like 'board with milestone predefined scope' do
-      let(:milestone_class) { ::Milestone::Upcoming }
-    end
-
-    it_behaves_like 'board with milestone predefined scope' do
-      let(:milestone_class) { ::Milestone::Started }
-    end
-
-    context 'group board milestone' do
-      let(:group) { create(:group) }
-      let!(:milestone) { create(:milestone) }
-
-      before do
-        stub_licensed_features(scoped_issue_board: true)
-      end
-
-      it 'is not persisted if it is not within group milestones' do
-        service = described_class.new(group, double, milestone_id: milestone.id)
-
-        group_board = service.execute
-
-        expect(group_board.milestone).to be_nil
-      end
-
-      it 'is persisted if it is within group milestones' do
-        milestone.update!(project: nil, group: group)
-        service = described_class.new(group, double, milestone_id: milestone.id)
-
-        group_board = service.execute
-
-        expect(group_board.reload.milestone).to eq(milestone)
-      end
-    end
-
-    context 'project board milestone' do
-      let(:project) { create(:project, :private) }
-      let!(:milestone) { create(:milestone) }
-
-      before do
-        stub_licensed_features(scoped_issue_board: true)
-      end
-
-      it 'is not persisted if it is not within project milestones' do
-        service = described_class.new(project, double, milestone_id: milestone.id)
-
-        board = service.execute
-
-        expect(board.reload.milestone).to be_nil
-      end
-
-      it 'is persisted if it is within project milestones' do
-        milestone.update!(project: project)
-        service = described_class.new(project, double, milestone_id: milestone.id)
-
-        board = service.execute
-
-        expect(board.reload.milestone).to eq(milestone)
-      end
-
-      it 'is persisted if it is within project group milestones' do
-        project_group = create(:group)
-        project.update(group: project_group)
-        milestone.update!(project: nil, group: project_group)
-
-        service = described_class.new(project_group, double, milestone_id: milestone.id)
-
-        board = service.execute
-
-        expect(board.reload.milestone).to eq(milestone)
-      end
+    it_behaves_like 'setting a milestone scope' do
+      subject { described_class.new(parent, double, milestone_id: milestone.id).execute }
     end
   end
 end

ee/spec/services/boards/update_service_spec.rb

 require 'spec_helper'
 
 describe Boards::UpdateService, services: true do
-  shared_examples 'board with milestone predefined scope' do
-    let(:project) { create(:project) }
-    let!(:board)  { create(:board) }
-
-    it 'updates board to milestone id' do
-      stub_licensed_features(scoped_issue_board: true)
-
-      described_class
-        .new(project, double, milestone_id: milestone_class.id)
-        .execute(board)
-
-      expect(board.reload.milestone).to eq(milestone_class)
-    end
-  end
-
   describe '#execute' do
     let(:project) { create(:project, group: group) }
     let(:group) { create(:group) }
@@ -71,73 +56,11 @@ describe Boards::UpdateService, services: true do
                                               labels: [])
     end
 
-    it_behaves_like 'board with milestone predefined scope' do
-      let(:milestone_class) { ::Milestone::Upcoming }
-    end
-
-    it_behaves_like 'board with milestone predefined scope' do
-      let(:milestone_class) { ::Milestone::Started }
-    end
-
-    context 'group board milestone' do
-      let!(:milestone) { create(:milestone) }
-
-      before do
-        stub_licensed_features(scoped_issue_board: true)
-      end
-
-      it 'is not updated if it is not within group milestones' do
-        service = described_class.new(group, double, milestone_id: milestone.id)
-
-        service.execute(board)
-
-        expect(board.reload.milestone).to be_nil
-      end
-
-      it 'is updated if it is within group milestones' do
-        milestone.update!(project: nil, group: group)
-        service = described_class.new(group, double, milestone_id: milestone.id)
-
-        service.execute(board)
-
-        expect(board.reload.milestone).to eq(milestone)
-      end
-    end
-
-    context 'project board milestone' do
-      let!(:milestone) { create(:milestone) }
+    it_behaves_like 'setting a milestone scope' do
+      subject { board.reload }
 
       before do
-        stub_licensed_features(scoped_issue_board: true)
-      end
-
-      it 'is not updated if it is not within project milestones' do
-        service = described_class.new(project, double, milestone_id: milestone.id)
-
-        service.execute(board)
-
-        expect(board.reload.milestone).to be_nil
-      end
-
-      it 'is updated if it is within project milestones' do
-        milestone.update!(project: project)
-        service = described_class.new(project, double, milestone_id: milestone.id)
-
-        service.execute(board)
-
-        expect(board.reload.milestone).to eq(milestone)
-      end
-
-      it 'is updated if it is within project group milestones' do
-        project_group = create(:group)
-        project.update(group: project_group)
-        milestone.update!(project: nil, group: project_group)
-
-        service = described_class.new(project_group, double, milestone_id: milestone.id)
-
-        service.execute(board)
-
-        expect(board.reload.milestone).to eq(milestone)
+        described_class.new(parent, double, milestone_id: milestone.id).execute(board)
       end
     end
 

ee/spec/support/shared_examples/services/boards/base_service_shared_examples.rb

+# frozen_string_literal: true
+
+shared_examples 'setting a milestone scope' do
+  before do
+    stub_licensed_features(scoped_issue_board: true)
+  end
+
+  shared_examples 'an invalid milestone' do
+    context 'when milestone is from another project / group' do
+      let(:milestone) { create(:milestone) }
+
+      it { expect(subject.milestone).to be_nil }
+    end
+  end
+
+  shared_examples 'a predefined milestone' do
+    context 'Upcoming' do
+      let(:milestone) { ::Milestone::Upcoming }
+
+      it { expect(subject.milestone).to eq(milestone) }
+    end
+
+    context 'Started' do
+      let(:milestone) { ::Milestone::Started }
+
+      it { expect(subject.milestone).to eq(milestone) }
+    end
+  end
+
+  shared_examples 'a group milestone' do
+    context 'when milestone is a group milestone' do
+      let(:milestone) { create(:milestone, group: group) }
+
+      it { expect(subject.milestone).to eq(milestone) }
+    end
+
+    context 'when milestone is an an ancestor group milestone' do
+      let(:milestone) { create(:milestone, group: ancestor_group) }
+
+      it { expect(subject.milestone).to eq(milestone) }
+    end
+  end
+
+  let(:ancestor_group) { create(:group) }
+  let(:group) { create(:group, parent: ancestor_group) }
+
+  context 'for a group board' do
+    let(:parent) { group }
+
+    it_behaves_like 'an invalid milestone'
+    it_behaves_like 'a predefined milestone'
+    it_behaves_like 'a group milestone'
+  end
+
+  context 'for a project board' do
+    let(:project) { create(:project, :private, group: group) }
+    let(:parent) { project }
+
+    it_behaves_like 'an invalid milestone'
+    it_behaves_like 'a predefined milestone'
+    it_behaves_like 'a group milestone'
+
+    context 'when milestone is a project milestone' do
+      let(:milestone) { create(:milestone, project: project) }
+
+      it { expect(subject.milestone).to eq(milestone) }
+    end
+  end
+end