Add feature specs for edit project settings

spec/features/projects/project_settings_spec.rb

+require 'spec_helper'
+
+describe 'Edit Project Settings', feature: true do
+  let(:user) { create(:user) }
+  let(:project) { create(:empty_project, path: 'gitlab', name: 'sample') }
+
+  before do
+    login_as(user)
+    project.team << [user, :master]
+  end
+
+  describe 'Project settings', js: true do
+    it 'shows errors for invalid project name' do
+      visit edit_namespace_project_path(project.namespace, project)
+
+      fill_in 'project_name_edit', with: 'foo&bar'
+
+      click_button 'Save changes'
+
+      expect(page).to have_field 'project_name_edit', with: 'foo&bar'
+      expect(page).to have_content "Name can contain only letters, digits, '_', '.', dash and space. It must start with letter, digit or '_'."
+      expect(page).to have_button 'Save changes'
+    end
+  end
+
+  describe 'Rename repository' do
+    it 'shows errors for invalid project path/name' do
+      visit edit_namespace_project_path(project.namespace, project)
+
+      fill_in 'Project name', with: 'foo&bar'
+      fill_in 'Path', with: 'foo&bar'
+
+      click_button 'Rename project'
+
+      expect(page).to have_field 'Project name', with: 'sample'
+      expect(page).to have_field 'Path', with: 'gitlab'
+      expect(page).to have_content "Name can contain only letters, digits, '_', '.', dash and space. It must start with letter, digit or '_'."
+      expect(page).to have_content "Path can contain only letters, digits, '_', '-' and '.'. Cannot start with '-', end in '.git' or end in '.atom'"
+    end
+  end
+end