1 files changed, 79 insertions, 0 deletions
diff --git a/spec/graphql/resolvers/recent_boards_resolver_spec.rb b/spec/graphql/resolvers/recent_boards_resolver_spec.rb
new file mode 100644
index 00000000000..1afdcd42b4f
--- /dev/null
+++ b/spec/graphql/resolvers/recent_boards_resolver_spec.rb
@@ -0,0 +1,79 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Resolvers::RecentBoardsResolver do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+
+  shared_examples_for 'group and project recent boards resolver' do
+    let_it_be(:board1) { create(:board, name: 'One', resource_parent: board_parent) }
+    let_it_be(:board2) { create(:board, name: 'Two', resource_parent: board_parent) }
+
+    before do
+      [board1, board2].each { |board| visit_board(board, board_parent) }
+    end
+
+    it 'calls ::Boards::VisitsFinder' do
+      expect_any_instance_of(::Boards::VisitsFinder) do |finder|
+        expect(finder).to receive(:latest)
+      end
+
+      resolve_recent_boards
+    end
+
+    it 'avoids N+1 queries' do
+      control = ActiveRecord::QueryRecorder.new { resolve_recent_boards }
+
+      board3 = create(:board, resource_parent: board_parent)
+      visit_board(board3, board_parent)
+
+      expect { resolve_recent_boards(args: {}) }.not_to exceed_query_limit(control)
+    end
+
+    it 'returns most recent visited boards' do
+      expect(resolve_recent_boards).to match_array [board2, board1]
+    end
+
+    it 'returns a set number of boards' do
+      stub_const('Board::RECENT_BOARDS_SIZE', 1)
+
+      expect(resolve_recent_boards).to match_array [board2]
+    end
+  end
+
+  describe '#resolve' do
+    context 'when there is no parent' do
+      let_it_be(:board_parent) { nil }
+
+      it 'returns none if parent is nil' do
+        expect(resolve_recent_boards).to eq(Board.none)
+      end
+    end
+
+    context 'when project boards' do
+      let_it_be(:board_parent) { create(:project, :public, creator_id: user.id, namespace: user.namespace ) }
+
+      it_behaves_like 'group and project recent boards resolver'
+    end
+
+    context 'when group boards' do
+      let_it_be(:board_parent) { create(:group) }
+
+      it_behaves_like 'group and project recent boards resolver'
+    end
+  end
+
+  def resolve_recent_boards(args: {})
+    resolve(described_class, obj: board_parent, args: args, ctx: { current_user: user })
+  end
+
+  def visit_board(board, parent)
+    if parent.is_a?(Group)
+      create(:board_group_recent_visit, group: parent, board: board, user: user)
+    else
+      create(:board_project_recent_visit, project: parent, board: board, user: user)
+    end
+  end
+end