Merge branch 'mr-widget-initial-state-tests' into 'master'

Added test for initial merge request widget state

See merge request !8738

spec/features/merge_requests/widget_spec.rb

+require 'rails_helper'
+
+describe 'Merge request', :feature, :js do
+  include WaitForAjax
+
+  let(:project) { create(:project) }
+  let(:user) { create(:user) }
+
+  before do
+    project.team << [user, :master]
+    login_as(user)
+
+    visit new_namespace_project_merge_request_path(
+      project.namespace,
+      project,
+      merge_request: {
+        source_project_id: project.id,
+        target_project_id: project.id,
+        source_branch: 'feature',
+        target_branch: 'master'
+      }
+    )
+  end
+
+  it 'shows widget status after creating new merge request' do
+    click_button 'Submit merge request'
+
+    expect(find('.mr-state-widget')).to have_content('Checking ability to merge automatically')
+
+    wait_for_ajax
+
+    expect(page).to have_selector('.accept_merge_request')
+  end
+end