Add Milestone tag select filter on executions public page

spec/features/budgets/executions_spec.rb

@@ -235,6 +235,52 @@ describe "Executions" do
       select "Bidding (0)", from: "status"
       expect(page).not_to have_content(investment1.title)
     end
+
+    scenario "by milestone tag, only display tags for winner investments", :js do
+      create(:milestone, milestoneable: investment1, status: status1)
+      create(:milestone, milestoneable: investment2, status: status2)
+      create(:milestone, milestoneable: investment3, status: status2)
+      investment1.milestone_tag_list.add("tag1", "tag2")
+      investment1.save
+      investment2.milestone_tag_list.add("tag2")
+      investment2.save
+      investment3.milestone_tag_list.add("tag2")
+      investment3.save
+
+      visit budget_path(budget)
+
+      click_link "See results"
+      click_link "Milestones"
+
+      expect(page).to have_content(investment1.title)
+      expect(page).to have_content(investment2.title)
+
+      select "tag2 (2)", from: "milestone_tag"
+
+      expect(page).to have_content(investment1.title)
+      expect(page).to have_content(investment2.title)
+
+      select "Studying the project (1)", from: "status"
+
+      expect(page).to have_content(investment1.title)
+      expect(page).not_to have_content(investment2.title)
+
+      select "Bidding (1)", from: "status"
+
+      expect(page).not_to have_content(investment1.title)
+      expect(page).to have_content(investment2.title)
+
+      select "tag1 (1)", from: "milestone_tag"
+
+      expect(page).not_to have_content(investment1.title)
+      expect(page).not_to have_content(investment2.title)
+
+      select "All (2)", from: "milestone_tag"
+
+      expect(page).not_to have_content(investment1.title)
+      expect(page).to have_content(investment2.title)
+    end
+
   end
 
   context "Heading Order" do