Add specs and ensure the correct issue id is used

- Added helper spec

app/controllers/projects/error_tracking_controller.rb

@@ -2,6 +2,7 @@
 
 class Projects::ErrorTrackingController < Projects::ApplicationController
   before_action :authorize_read_sentry_issue!
+  before_action :set_issue_id, only: [:details, :stack_trace]
 
   POLLING_INTERVAL = 10_000
 
@@ -113,6 +114,10 @@ class Projects::ErrorTrackingController < Projects::ApplicationController
     params.permit(:issue_id)
   end
 
+  def set_issue_id
+    @issue_id = issue_details_params[:issue_id]
+  end
+
   def set_polling_interval
     Gitlab::PollingInterval.set_header(response, interval: POLLING_INTERVAL)
   end

app/helpers/projects/error_tracking_helper.rb

@@ -14,12 +14,12 @@ module Projects::ErrorTrackingHelper
     }
   end
 
-  def error_details_data(project, issue)
-    opts = [project, issue, { format: :json }]
+  def error_details_data(project, issue_id)
+    opts = [project, issue_id, { format: :json }]
 
     {
-      'issue-details-path' => details_namespace_project_error_tracking_index_path(*opts),
-      'issue-stack-trace-path' => stack_trace_namespace_project_error_tracking_index_path(*opts)
+      'issue-details-path' => details_project_error_tracking_index_path(*opts),
+      'issue-stack-trace-path' => stack_trace_project_error_tracking_index_path(*opts)
     }
   end
 end

app/views/projects/error_tracking/details.html.haml

 - page_title _('Error Details')
 - add_to_breadcrumbs 'Errors', project_error_tracking_index_path(@project)
 
-#js-error_details{ data: error_details_data(@current_user, @project) }
+#js-error_details{ data: error_details_data(@project, @issue_id) }

spec/helpers/projects/error_tracking_helper_spec.rb

@@ -75,4 +75,21 @@ describe Projects::ErrorTrackingHelper do
       end
     end
   end
+
+  describe '#error_details_data' do
+    let(:issue_id) { 1234 }
+    let(:route_params) { [project.owner, project, issue_id, { format: :json }] }
+    let(:details_path) { details_namespace_project_error_tracking_index_path(*route_params) }
+    let(:stack_trace_path) { stack_trace_namespace_project_error_tracking_index_path(*route_params) }
+
+    let(:result) { helper.error_details_data(project, issue_id) }
+
+    it 'returns the correct details path' do
+      expect(result['issue-details-path']).to eq details_path
+    end
+
+    it 'returns the correct stack trace path' do
+      expect(result['issue-stack-trace-path']).to eq stack_trace_path
+    end
+  end
 end