Add integration test for events calendar rendering

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Co-authored-by: fbacall <503373+fbacall@users.noreply.github.com>

Author: Copilot

test/integration/events_calendar_integration_test.rb

@@ -0,0 +1,26 @@
+require 'test_helper'
+
+class EventsCalendarIntegrationTest < ActionDispatch::IntegrationTest
+  test 'calendar page loads and renders event calendar' do
+    freeze_time(Time.utc(2026, 5, 20, 12, 0, 0)) do
+      Event.create!(
+        title: 'System calendar event',
+        url: 'http://example.com/system-calendar-event',
+        user: users(:regular_user),
+        content_provider: content_providers(:goblet),
+        timezone: 'UTC',
+        start: Time.now.beginning_of_month + 10.days,
+        end: Time.now.beginning_of_month + 10.days + 2.hours,
+        city: 'Manchester',
+        country: 'United Kingdom'
+      )
+
+      get calendar_events_path
+
+      assert_response :success
+      assert_select '#events-calendar #calendar.simple-calendar'
+      assert_select '#events-calendar table.table.table-striped'
+      assert_select '#events-calendar a.clear-both', text: 'System calendar event'
+    end
+  end
+end