Add e2e test for optimisationCacheUrl parameter

test/e2e/downloadImage.e2e.test.ts

@@ -0,0 +1,42 @@
+import * as mwoffliner from '../../src/mwoffliner.lib.js'
+import { execa } from 'execa'
+import rimraf from 'rimraf'
+import { zimcheckAvailable, zimcheck } from '../util.js'
+import 'dotenv/config.js'
+import { jest } from '@jest/globals'
+
+jest.setTimeout(200000)
+
+const describeIf = process.env.S3_URL ? describe : describe.skip
+describeIf('Check image downloading from S3 using optimisationCacheUrl parameter', () => {
+  const now = new Date()
+  const testId = `mwo-test-${+now}`
+
+  const parameters = {
+    mwUrl: 'https://fr.wikipedia.org',
+    adminEmail: 'test@kiwix.org',
+    outputDirectory: testId,
+    redis: process.env.REDIS,
+    articleList: 'Paris',
+    format: ['nodet'],
+    optimisationCacheUrl: process.env.S3_URL,
+  }
+
+  test('right scrapping from fr.wikipedia.org with optimisationCacheUrl parameter', async () => {
+    await execa('redis-cli flushall', { shell: true })
+
+    const outFiles = await mwoffliner.execute(parameters)
+
+    if (await zimcheckAvailable()) {
+      await expect(zimcheck(outFiles[0].outFile)).resolves.not.toThrowError()
+    } else {
+      console.log('Zimcheck not installed, skipping test')
+    }
+
+    rimraf.sync(`./${testId}`)
+
+    const redisScan = await execa('redis-cli --scan', { shell: true })
+    // Redis has been cleared
+    expect(redisScan.stdout).toEqual('')
+  })
+})