[Playwright] Mock date in helper functions

e2e/Degree_programme_overview.spec.ts

@@ -1,8 +1,8 @@
 import { test, expect, Page } from '@playwright/test'
-import { checkTableStats, init } from './support/commands'
+import { checkTableStats, init, testMockTime } from './support/commands'
 
 const getEmptyYears = (isAcademicYear = false) => {
-  const today = new Date()
+  const today = new Date(testMockTime)
   const latestYear = isAcademicYear && today.getMonth() < 7 ? today.getFullYear() - 1 : today.getFullYear()
   const years = []
   for (let year = latestYear; year >= 2024; year--) {

e2e/support/commands.ts

@@ -89,6 +89,7 @@ export const init = async (page: Page, path: string, userId: UserId = 'basic', c
     })
   })
 
+  await page.clock.install({ time: testMockTime })
   await page.goto(path || '/')
 }