Add specs for clear search button

spec/features/issues/search_bar_spec.rb

+require 'rails_helper'
+
+describe 'Search bar', feature: true do
+  include WaitForAjax
+
+  let!(:project)   { create(:project) }
+  let!(:group)     { create(:group) }
+  let!(:user)      { create(:user) }
+
+  before do
+    project.team << [user, :master]
+    group.add_developer(user)
+    login_as(user)
+    create(:issue, project: project)
+
+    visit namespace_project_issues_path(project.namespace, project)
+  end
+
+  describe 'clear search button', js: true do
+    it 'clears text' do
+      search_text = 'search_text'
+      filtered_search = find('.filtered-search')
+      filtered_search.set(search_text)
+
+      expect(filtered_search.value).to eq(search_text)
+      find('.filtered-search-input-container .clear-search').click
+      expect(filtered_search.value).to eq('')
+    end
+
+    it 'hides by default' do
+      expect(page).to have_css('.clear-search', visible: false)
+    end
+
+    it 'hides after clicked' do
+      filtered_search = find('.filtered-search')
+      filtered_search.set('a')
+      find('.filtered-search-input-container .clear-search').click
+      expect(page).to have_css('.clear-search', visible: false)
+    end
+
+    it 'hides when there is no text' do
+      filtered_search = find('.filtered-search')
+      filtered_search.set('a')
+      filtered_search.set('')
+      expect(page).to have_css('.clear-search', visible: false)
+    end
+
+    it 'shows when there is text' do
+      filtered_search = find('.filtered-search')
+      filtered_search.set('a')
+
+      expect(page).to have_css('.clear-search', visible: true)
+    end
+  end
+end