Test todos_count_format helper at the correct level to improve speed

Instead of an integration test that creates 101 Todo records to test a
simple view helper, just unit test the helper.

app/controllers/dashboard/todos_controller.rb

@@ -47,11 +47,6 @@ class Dashboard::TodosController < Dashboard::ApplicationController
     render json: todos_counts
   end
 
-  # Used in TodosHelper also
-  def self.todos_count_format(count)
-    count >= 100 ? '99+' : count
-  end
-
   private
 
   def find_todos

app/helpers/todos_helper.rb

@@ -4,7 +4,7 @@ module TodosHelper
   end
 
   def todos_count_format(count)
-    count > 99 ? '99+' : count
+    count > 99 ? '99+' : count.to_s
   end
 
   def todos_done_count

spec/features/todos/todos_spec.rb

@@ -333,29 +333,6 @@ describe 'Dashboard Todos', feature: true do
       end
     end
 
-    context 'User have large number of todos' do
-      before do
-        create_list(:todo, 101, :mentioned, user: user, project: project, target: issue, author: author)
-
-        login_as(user)
-        visit dashboard_todos_path
-      end
-
-      it 'shows 99+ for count >= 100 in notification' do
-        expect(page).to have_selector('.todos-count', text: '99+')
-      end
-
-      it 'shows exact number in To do tab' do
-        expect(page).to have_selector('.todos-pending .badge', text: '101')
-      end
-
-      it 'shows exact number for count < 100' do
-        3.times { first('.js-done-todo').click }
-
-        expect(page).to have_selector('.todos-count', text: '98')
-      end
-    end
-
     context 'User has a Build Failed todo' do
       let!(:todo) { create(:todo, :build_failed, user: user, project: project, author: author) }
 

spec/helpers/todos_helper_spec.rb

 require "spec_helper"
 
 describe TodosHelper do
+  describe '#todos_count_format' do
+    it 'shows fuzzy count for 100 or more items' do
+      expect(helper.todos_count_format(100)).to eq '99+'
+      expect(helper.todos_count_format(1000)).to eq '99+'
+    end
+
+    it 'shows exact count for 99 or fewer items' do
+      expect(helper.todos_count_format(99)).to eq '99'
+      expect(helper.todos_count_format(50)).to eq '50'
+      expect(helper.todos_count_format(1)).to eq '1'
+    end
+  end
+
   describe '#todo_projects_options' do
     let(:projects) { create_list(:empty_project, 3) }
     let(:user)     { create(:user) }