Test impersonation using img data attribute instead of username

app/views/layouts/_page.html.haml

@@ -15,7 +15,7 @@
     .collapse-nav
       = render partial: 'layouts/collapse_button'
     - if current_user
-      = link_to current_user, class: 'sidebar-user', title: "Profile" do
+      = link_to current_user, class: 'sidebar-user', title: "Profile", data: {user: current_user.username} do
         = image_tag avatar_icon(current_user, 60), alt: 'Profile', class: 'avatar avatar s46'
   - if defined?(nav) && nav
     .layout-nav

spec/features/admin/admin_users_spec.rb

@@ -144,8 +144,8 @@ describe "Admin::Users", feature: true  do
         before { click_link 'Impersonate' }
 
         it 'logs in as the user when impersonate is clicked' do
-          page.within '.sidebar-user .username' do
-            expect(page).to have_content(another_user.username)
+          page.within '.sidebar-wrapper' do
+            expect(page.find('.sidebar-user')['data-user']).to eql(another_user.username)
           end
         end
 
@@ -158,8 +158,8 @@ describe "Admin::Users", feature: true  do
         it 'can log out of impersonated user back to original user' do
           find(:css, 'li.impersonation a').click
 
-          page.within '.sidebar-user .username' do
-            expect(page).to have_content(@user.username)
+          page.within '.sidebar-wrapper' do
+            expect(page.find('.sidebar-user')['data-user']).to eql(@user.username)
           end
         end