Merge branch 'zj-display-error-team-fetch' into 'master'

Fix inconsistent return type

Closes #27150

See merge request !8290

3 files changed, 12 insertions, 6 deletions

diff --git a/spec/controllers/projects/mattermosts_controller_spec.rb b/spec/controllers/projects/mattermosts_controller_spec.rb
index 2ae635a1244..cae733f0cfb 100644
--- a/spec/controllers/projects/mattermosts_controller_spec.rb
+++ b/spec/controllers/projects/mattermosts_controller_spec.rb
@@ -13,13 +13,13 @@ describe Projects::MattermostsController do
     before do
       allow_any_instance_of(MattermostSlashCommandsService).
         to receive(:list_teams).and_return([])
+    end
 
+    it 'accepts the request' do
       get(:new,
           namespace_id: project.namespace.to_param,
           project_id: project.to_param)
-    end
 
-    it 'accepts the request' do
       expect(response).to have_http_status(200)
     end
   end
diff --git a/spec/features/projects/services/mattermost_slash_command_spec.rb b/spec/features/projects/services/mattermost_slash_command_spec.rb
index 86a07b2c679..042a1ccab51 100644
--- a/spec/features/projects/services/mattermost_slash_command_spec.rb
+++ b/spec/features/projects/services/mattermost_slash_command_spec.rb
@@ -99,6 +99,15 @@ feature 'Setup Mattermost slash commands', feature: true do
       expect(select_element.all('option').count).to eq(3)
     end
 
+    it 'shows an error alert with the error message if there is an error requesting teams' do
+      allow_any_instance_of(MattermostSlashCommandsService).to receive(:list_teams) { [[], 'test mattermost error message'] }
+
+      click_link 'Add to Mattermost'
+
+      expect(page).to have_selector('.alert')
+      expect(page).to have_content('test mattermost error message')
+    end
+
     def stub_teams(count: 0)
       teams = create_teams(count)
 
diff --git a/spec/models/project_services/mattermost_slash_commands_service_spec.rb b/spec/models/project_services/mattermost_slash_commands_service_spec.rb
index c879edddfdd..98f3d420c8a 100644
--- a/spec/models/project_services/mattermost_slash_commands_service_spec.rb
+++ b/spec/models/project_services/mattermost_slash_commands_service_spec.rb
@@ -113,10 +113,7 @@ describe MattermostSlashCommandsService, :models do
         end
 
         it 'shows error messages' do
-          teams, message = subject
-
-          expect(teams).to be_empty
-          expect(message).to eq('Failed to get team list.')
+          expect(subject).to eq([[], "Failed to get team list."])
         end
       end
     end