show gpg key's user info when no profile exists

app/views/projects/commit/_valid_signature_badge.html.haml

@@ -6,14 +6,26 @@
 - content = capture do
   - gpg_key = signature.gpg_key
-  = link_to user_path(gpg_key.user), class: 'gpg-popover-user-link' do
-    %div
-      = user_avatar_without_link(user: signature.gpg_key.user, size: 32)
-    %div
-      %strong= gpg_key.user.username
-      %div= gpg_key.user.name
+  - user = gpg_key&.user
+  - user_name = signature.gpg_key_user_name
+  - user_email = signature.gpg_key_user_email
+  - if user
+    = link_to user_path(user), class: 'gpg-popover-user-link' do
+      %div
+        = user_avatar_without_link(user: user, size: 32)
+      %div
+        %strong= gpg_key.user.username
+        %div= gpg_key.user.name
+  - else
+    = mail_to user_email do
+      %div
+        = user_avatar_without_link(user_name: user_name, user_email: user_email, size: 32)
+
+      %div
+        %strong= user_name
+        %div= user_email
 - locals = { signature: signature, title: title, content: content, label: 'Verified', css_classes: ['valid'] }

spec/features/commits_spec.rb

@@ -263,21 +263,25 @@ describe 'Commits' do
     end
     it 'shows popover badges', :js do
-      user = create :user, email: GpgHelpers::User1.emails.first, username: 'nannie.bernhard', name: 'Nannie Bernhard'
-      project.team << [user, :master]
+      gpg_user = create :user, email: GpgHelpers::User1.emails.first, username: 'nannie.bernhard', name: 'Nannie Bernhard'
       Sidekiq::Testing.inline! do
-        create :gpg_key, key: GpgHelpers::User1.public_key, user: user
+        create :gpg_key, key: GpgHelpers::User1.public_key, user: gpg_user
       end
+      user = create :user
+      project.team << [user, :master]
+
       sign_in(user)
       visit namespace_project_commits_path(project.namespace, project, :'signed-commits')
+      # unverified signature
       click_on 'Unverified', match: :first
       within '.popover' do
         expect(page).to have_content 'This commit was signed with an unverified signature.'
         expect(page).to have_content "GPG Key ID: #{GpgHelpers::User2.primary_keyid}"
       end
+      # verified and the gpg user has a gitlab profile
       click_on 'Verified'
       within '.popover' do
         expect(page).to have_content 'This commit was signed with a verified signature.'
@@ -285,6 +289,19 @@ describe 'Commits' do
         expect(page).to have_content 'Nannie Bernhard'
         expect(page).to have_content "GPG Key ID: #{GpgHelpers::User1.primary_keyid}"
       end
+
+      # verified and the gpg user's profile doesn't exist anymore
+      gpg_user.destroy!
+
+      visit namespace_project_commits_path(project.namespace, project, :'signed-commits')
+
+      click_on 'Verified'
+      within '.popover' do
+        expect(page).to have_content 'This commit was signed with a verified signature.'
+        expect(page).to have_content 'Nannie Bernhard'
+        expect(page).to have_content 'nannie.bernhard@example.com'
+        expect(page).to have_content "GPG Key ID: #{GpgHelpers::User1.primary_keyid}"
+      end
     end
   end
 end