Fix scoped board milestone/iteration Timebox global ID

When a milestone or iteration Timebox id was used in a
scoped board the global ID for that milestone or iteration
would not preserve the correct format
Example: "gid://gitlab/Milestone/-1", "gid://gitlab/Iteration/-4"

Changelog: fixed
EE: true

app/models/concerns/timebox.rb

@@ -11,9 +11,7 @@ module Timebox
   include StripAttribute
   include FromUnion
 
-  TimeboxStruct = Struct.new(:title, :name, :id) do
-    include GlobalID::Identification
-
+  TimeboxStruct = Struct.new(:title, :name, :id, :class_name) do
     # Ensure these models match the interface required for exporting
     def serializable_hash(_opts = {})
       { title: title, name: name, id: id }
@@ -22,6 +20,10 @@ module Timebox
     def self.declarative_policy_class
       "TimeboxPolicy"
     end
+
+    def to_global_id
+      ::Gitlab::GlobalId.build(self, model_name: class_name, id: id)
+    end
   end
 
   # Represents a "No Timebox" state used for filtering Issues and Merge
@@ -33,10 +35,10 @@ module Timebox
 
   included do
     # Defines the same constants above, but inside the including class.
-    const_set :None, TimeboxStruct.new("No #{self.name}", "No #{self.name}", 0)
-    const_set :Any, TimeboxStruct.new("Any #{self.name}", '', -1)
-    const_set :Upcoming, TimeboxStruct.new('Upcoming', '#upcoming', -2)
-    const_set :Started, TimeboxStruct.new('Started', '#started', -3)
+    const_set :None, TimeboxStruct.new("No #{self.name}", "No #{self.name}", 0, self.name)
+    const_set :Any, TimeboxStruct.new("Any #{self.name}", '', -1, self.name)
+    const_set :Upcoming, TimeboxStruct.new('Upcoming', '#upcoming', -2, self.name)
+    const_set :Started, TimeboxStruct.new('Started', '#started', -3, self.name)
 
     alias_method :timebox_id, :id
 

ee/app/models/ee/iteration.rb

@@ -12,9 +12,9 @@ module EE
 
     # For Iteration
     class Predefined
-      None = ::Timebox::TimeboxStruct.new('None', 'none', ::Timebox::None.id).freeze
-      Any = ::Timebox::TimeboxStruct.new('Any', 'any', ::Timebox::Any.id).freeze
-      Current = ::Timebox::TimeboxStruct.new('Current', 'current', -4).freeze
+      None = ::Timebox::TimeboxStruct.new('None', 'none', ::Timebox::None.id, ::Iteration.name).freeze
+      Any = ::Timebox::TimeboxStruct.new('Any', 'any', ::Timebox::Any.id, ::Iteration.name).freeze
+      Current = ::Timebox::TimeboxStruct.new('Current', 'current', -4, ::Iteration.name).freeze
 
       ALL = [None, Any, Current].freeze
 

ee/spec/models/board_spec.rb

@@ -44,24 +44,28 @@ RSpec.describe Board do
         board.milestone_id = Milestone::None.id
 
         expect(board.milestone).to eq Milestone::None
+        expect(board.milestone.to_global_id.to_s).to eq "gid://gitlab/Milestone/#{Milestone::None.id}"
       end
 
       it 'returns Milestone::Any for started milestone id' do
         board.milestone_id = Milestone::Any.id
 
         expect(board.milestone).to eq Milestone::Any
+        expect(board.milestone.to_global_id.to_s).to eq "gid://gitlab/Milestone/#{Milestone::Any.id}"
       end
 
       it 'returns Milestone::Upcoming for upcoming milestone id' do
         board.milestone_id = Milestone::Upcoming.id
 
         expect(board.milestone).to eq Milestone::Upcoming
+        expect(board.milestone.to_global_id.to_s).to eq "gid://gitlab/Milestone/#{Milestone::Upcoming.id}"
       end
 
       it 'returns Milestone::Started for started milestone id' do
         board.milestone_id = Milestone::Started.id
 
         expect(board.milestone).to eq Milestone::Started
+        expect(board.milestone.to_global_id.to_s).to eq "gid://gitlab/Milestone/#{Milestone::Started.id}"
       end
 
       it 'returns milestone for valid milestone id' do
@@ -101,18 +105,21 @@ RSpec.describe Board do
         board.iteration_id = Iteration::Predefined::None.id
 
         expect(board.iteration).to eq Iteration::Predefined::None
+        expect(board.iteration.to_global_id.to_s).to eq "gid://gitlab/Iteration/#{Iteration::Predefined::None.id}"
       end
 
       it 'returns Iteration::Predefined::Any, when iteration_id is Any.id' do
         board.iteration_id = Iteration::Predefined::Any.id
 
         expect(board.iteration).to eq Iteration::Predefined::Any
+        expect(board.iteration.to_global_id.to_s).to eq "gid://gitlab/Iteration/#{Iteration::Predefined::Any.id}"
       end
 
       it 'returns ::Iteration::Predefined::Current, when iteration_id is Current.id' do
         board.iteration_id = Iteration::Predefined::Current.id
 
         expect(board.iteration).to eq Iteration::Predefined::Current
+        expect(board.iteration.to_global_id.to_s).to eq "gid://gitlab/Iteration/#{Iteration::Predefined::Current.id}"
       end
 
       it 'returns iteration for valid iteration id' do

ee/spec/requests/api/graphql/boards/boards_query_spec.rb

@@ -42,6 +42,27 @@ RSpec.describe 'get list of boards' do
       )
     end
 
+    def board_milestone_query(board)
+      graphql_query_for(
+        board_parent_type,
+        { 'fullPath' => board_parent.full_path },
+        query_graphql_field(
+          'board', { id: global_id_of(board) },
+          'milestone { id }'
+        )
+      )
+    end
+
+    context 'when board is scoped to a wildcard milestone' do
+      it 'returns milestone global ID in the correct format' do
+        board = create(:board, resource_parent: board_parent, milestone_id: -3)
+
+        post_graphql(board_milestone_query(board), current_user: current_user)
+
+        expect(graphql_data.dig(board_parent_type, "board", "milestone", "id")).to eq("gid://gitlab/Milestone/-3")
+      end
+    end
+
     it 'returns open epics referenced by issues in the board' do
       board = create(:board, resource_parent: board_parent)
       issue_project = board_parent.is_a?(Project) ? board_parent : create(:project, group: board_parent)