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diff --git a/shared/extra-utils/users/notifications.ts b/shared/extra-utils/users/notifications.ts
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+++ b/shared/extra-utils/users/notifications.ts
@@ -0,0 +1,729 @@
+/* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
+
+import { expect } from 'chai'
+import { inspect } from 'util'
+import { AbuseState, PluginType } from '@shared/models'
+import { UserNotification, UserNotificationSetting, UserNotificationSettingValue, UserNotificationType } from '../../models/users'
+import { MockSmtpServer } from '../mock-servers/mock-email'
+import { doubleFollow } from '../server/follows'
+import { flushAndRunMultipleServers, ServerInfo } from '../server/servers'
+import { setAccessTokensToServers, userLogin } from './login'
+import { createUser, getMyUserInformation } from './users'
+
+function getAllNotificationsSettings (): UserNotificationSetting {
+  return {
+    newVideoFromSubscription: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    newCommentOnMyVideo: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    abuseAsModerator: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    videoAutoBlacklistAsModerator: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    blacklistOnMyVideo: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    myVideoImportFinished: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    myVideoPublished: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    commentMention: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    newFollow: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    newUserRegistration: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    newInstanceFollower: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    abuseNewMessage: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    abuseStateChange: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    autoInstanceFollowing: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    newPeerTubeVersion: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL,
+    newPluginVersion: UserNotificationSettingValue.WEB | UserNotificationSettingValue.EMAIL
+  }
+}
+
+type CheckerBaseParams = {
+  server: ServerInfo
+  emails: any[]
+  socketNotifications: UserNotification[]
+  token: string
+  check?: { web: boolean, mail: boolean }
+}
+
+type CheckerType = 'presence' | 'absence'
+
+async function checkNotification (
+  base: CheckerBaseParams,
+  notificationChecker: (notification: UserNotification, type: CheckerType) => void,
+  emailNotificationFinder: (email: object) => boolean,
+  checkType: CheckerType
+) {
+  const check = base.check || { web: true, mail: true }
+
+  if (check.web) {
+    const notification = await base.server.notificationsCommand.getLastest({ token: base.token })
+
+    if (notification || checkType !== 'absence') {
+      notificationChecker(notification, checkType)
+    }
+
+    const socketNotification = base.socketNotifications.find(n => {
+      try {
+        notificationChecker(n, 'presence')
+        return true
+      } catch {
+        return false
+      }
+    })
+
+    if (checkType === 'presence') {
+      const obj = inspect(base.socketNotifications, { depth: 5 })
+      expect(socketNotification, 'The socket notification is absent when it should be present. ' + obj).to.not.be.undefined
+    } else {
+      const obj = inspect(socketNotification, { depth: 5 })
+      expect(socketNotification, 'The socket notification is present when it should not be present. ' + obj).to.be.undefined
+    }
+  }
+
+  if (check.mail) {
+    // Last email
+    const email = base.emails
+                      .slice()
+                      .reverse()
+                      .find(e => emailNotificationFinder(e))
+
+    if (checkType === 'presence') {
+      const emails = base.emails.map(e => e.text)
+      expect(email, 'The email is absent when is should be present. ' + inspect(emails)).to.not.be.undefined
+    } else {
+      expect(email, 'The email is present when is should not be present. ' + inspect(email)).to.be.undefined
+    }
+  }
+}
+
+function checkVideo (video: any, videoName?: string, videoUUID?: string) {
+  if (videoName) {
+    expect(video.name).to.be.a('string')
+    expect(video.name).to.not.be.empty
+    expect(video.name).to.equal(videoName)
+  }
+
+  if (videoUUID) {
+    expect(video.uuid).to.be.a('string')
+    expect(video.uuid).to.not.be.empty
+    expect(video.uuid).to.equal(videoUUID)
+  }
+
+  expect(video.id).to.be.a('number')
+}
+
+function checkActor (actor: any) {
+  expect(actor.displayName).to.be.a('string')
+  expect(actor.displayName).to.not.be.empty
+  expect(actor.host).to.not.be.undefined
+}
+
+function checkComment (comment: any, commentId: number, threadId: number) {
+  expect(comment.id).to.equal(commentId)
+  expect(comment.threadId).to.equal(threadId)
+}
+
+async function checkNewVideoFromSubscription (base: CheckerBaseParams, videoName: string, videoUUID: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_VIDEO_FROM_SUBSCRIPTION
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      checkVideo(notification.video, videoName, videoUUID)
+      checkActor(notification.video.channel)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.type !== UserNotificationType.NEW_VIDEO_FROM_SUBSCRIPTION || n.video.name !== videoName
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+    return text.indexOf(videoUUID) !== -1 && text.indexOf('Your subscription') !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkVideoIsPublished (base: CheckerBaseParams, videoName: string, videoUUID: string, type: CheckerType) {
+  const notificationType = UserNotificationType.MY_VIDEO_PUBLISHED
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      checkVideo(notification.video, videoName, videoUUID)
+      checkActor(notification.video.channel)
+    } else {
+      expect(notification.video).to.satisfy(v => v === undefined || v.name !== videoName)
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text: string = email['text']
+    return text.includes(videoUUID) && text.includes('Your video')
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkMyVideoImportIsFinished (
+  base: CheckerBaseParams,
+  videoName: string,
+  videoUUID: string,
+  url: string,
+  success: boolean,
+  type: CheckerType
+) {
+  const notificationType = success ? UserNotificationType.MY_VIDEO_IMPORT_SUCCESS : UserNotificationType.MY_VIDEO_IMPORT_ERROR
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.videoImport.targetUrl).to.equal(url)
+
+      if (success) checkVideo(notification.videoImport.video, videoName, videoUUID)
+    } else {
+      expect(notification.videoImport).to.satisfy(i => i === undefined || i.targetUrl !== url)
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text: string = email['text']
+    const toFind = success ? ' finished' : ' error'
+
+    return text.includes(url) && text.includes(toFind)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkUserRegistered (base: CheckerBaseParams, username: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_USER_REGISTRATION
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      checkActor(notification.account)
+      expect(notification.account.name).to.equal(username)
+    } else {
+      expect(notification).to.satisfy(n => n.type !== notificationType || n.account.name !== username)
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text: string = email['text']
+
+    return text.includes(' registered.') && text.includes(username)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkNewActorFollow (
+  base: CheckerBaseParams,
+  followType: 'channel' | 'account',
+  followerName: string,
+  followerDisplayName: string,
+  followingDisplayName: string,
+  type: CheckerType
+) {
+  const notificationType = UserNotificationType.NEW_FOLLOW
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      checkActor(notification.actorFollow.follower)
+      expect(notification.actorFollow.follower.displayName).to.equal(followerDisplayName)
+      expect(notification.actorFollow.follower.name).to.equal(followerName)
+      expect(notification.actorFollow.follower.host).to.not.be.undefined
+
+      const following = notification.actorFollow.following
+      expect(following.displayName).to.equal(followingDisplayName)
+      expect(following.type).to.equal(followType)
+    } else {
+      expect(notification).to.satisfy(n => {
+        return n.type !== notificationType ||
+          (n.actorFollow.follower.name !== followerName && n.actorFollow.following !== followingDisplayName)
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text: string = email['text']
+
+    return text.includes(followType) && text.includes(followingDisplayName) && text.includes(followerDisplayName)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkNewInstanceFollower (base: CheckerBaseParams, followerHost: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_INSTANCE_FOLLOWER
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      checkActor(notification.actorFollow.follower)
+      expect(notification.actorFollow.follower.name).to.equal('peertube')
+      expect(notification.actorFollow.follower.host).to.equal(followerHost)
+
+      expect(notification.actorFollow.following.name).to.equal('peertube')
+    } else {
+      expect(notification).to.satisfy(n => {
+        return n.type !== notificationType || n.actorFollow.follower.host !== followerHost
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text: string = email['text']
+
+    return text.includes('instance has a new follower') && text.includes(followerHost)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkAutoInstanceFollowing (base: CheckerBaseParams, followerHost: string, followingHost: string, type: CheckerType) {
+  const notificationType = UserNotificationType.AUTO_INSTANCE_FOLLOWING
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      const following = notification.actorFollow.following
+      checkActor(following)
+      expect(following.name).to.equal('peertube')
+      expect(following.host).to.equal(followingHost)
+
+      expect(notification.actorFollow.follower.name).to.equal('peertube')
+      expect(notification.actorFollow.follower.host).to.equal(followerHost)
+    } else {
+      expect(notification).to.satisfy(n => {
+        return n.type !== notificationType || n.actorFollow.following.host !== followingHost
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text: string = email['text']
+
+    return text.includes(' automatically followed a new instance') && text.includes(followingHost)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkCommentMention (
+  base: CheckerBaseParams,
+  uuid: string,
+  commentId: number,
+  threadId: number,
+  byAccountDisplayName: string,
+  type: CheckerType
+) {
+  const notificationType = UserNotificationType.COMMENT_MENTION
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      checkComment(notification.comment, commentId, threadId)
+      checkActor(notification.comment.account)
+      expect(notification.comment.account.displayName).to.equal(byAccountDisplayName)
+
+      checkVideo(notification.comment.video, undefined, uuid)
+    } else {
+      expect(notification).to.satisfy(n => n.type !== notificationType || n.comment.id !== commentId)
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text: string = email['text']
+
+    return text.includes(' mentioned ') && text.includes(uuid) && text.includes(byAccountDisplayName)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+let lastEmailCount = 0
+
+async function checkNewCommentOnMyVideo (base: CheckerBaseParams, uuid: string, commentId: number, threadId: number, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_COMMENT_ON_MY_VIDEO
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      checkComment(notification.comment, commentId, threadId)
+      checkActor(notification.comment.account)
+      checkVideo(notification.comment.video, undefined, uuid)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.comment === undefined || n.comment.id !== commentId
+      })
+    }
+  }
+
+  const commentUrl = `http://localhost:${base.server.port}/w/${uuid};threadId=${threadId}`
+
+  function emailNotificationFinder (email: object) {
+    return email['text'].indexOf(commentUrl) !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+
+  if (type === 'presence') {
+    // We cannot detect email duplicates, so check we received another email
+    expect(base.emails).to.have.length.above(lastEmailCount)
+    lastEmailCount = base.emails.length
+  }
+}
+
+async function checkNewVideoAbuseForModerators (base: CheckerBaseParams, videoUUID: string, videoName: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_ABUSE_FOR_MODERATORS
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.abuse.id).to.be.a('number')
+      checkVideo(notification.abuse.video, videoName, videoUUID)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.abuse === undefined || n.abuse.video.uuid !== videoUUID
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+    return text.indexOf(videoUUID) !== -1 && text.indexOf('abuse') !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkNewAbuseMessage (base: CheckerBaseParams, abuseId: number, message: string, toEmail: string, type: CheckerType) {
+  const notificationType = UserNotificationType.ABUSE_NEW_MESSAGE
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.abuse.id).to.equal(abuseId)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.type !== notificationType || n.abuse === undefined || n.abuse.id !== abuseId
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+    const to = email['to'].filter(t => t.address === toEmail)
+
+    return text.indexOf(message) !== -1 && to.length !== 0
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkAbuseStateChange (base: CheckerBaseParams, abuseId: number, state: AbuseState, type: CheckerType) {
+  const notificationType = UserNotificationType.ABUSE_STATE_CHANGE
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.abuse.id).to.equal(abuseId)
+      expect(notification.abuse.state).to.equal(state)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.abuse === undefined || n.abuse.id !== abuseId
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+
+    const contains = state === AbuseState.ACCEPTED
+      ? ' accepted'
+      : ' rejected'
+
+    return text.indexOf(contains) !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkNewCommentAbuseForModerators (base: CheckerBaseParams, videoUUID: string, videoName: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_ABUSE_FOR_MODERATORS
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.abuse.id).to.be.a('number')
+      checkVideo(notification.abuse.comment.video, videoName, videoUUID)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.abuse === undefined || n.abuse.comment.video.uuid !== videoUUID
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+    return text.indexOf(videoUUID) !== -1 && text.indexOf('abuse') !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkNewAccountAbuseForModerators (base: CheckerBaseParams, displayName: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_ABUSE_FOR_MODERATORS
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.abuse.id).to.be.a('number')
+      expect(notification.abuse.account.displayName).to.equal(displayName)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.abuse === undefined || n.abuse.account.displayName !== displayName
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+    return text.indexOf(displayName) !== -1 && text.indexOf('abuse') !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkVideoAutoBlacklistForModerators (base: CheckerBaseParams, videoUUID: string, videoName: string, type: CheckerType) {
+  const notificationType = UserNotificationType.VIDEO_AUTO_BLACKLIST_FOR_MODERATORS
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.videoBlacklist.video.id).to.be.a('number')
+      checkVideo(notification.videoBlacklist.video, videoName, videoUUID)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.video === undefined || n.video.uuid !== videoUUID
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+    return text.indexOf(videoUUID) !== -1 && email['text'].indexOf('video-auto-blacklist/list') !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkNewBlacklistOnMyVideo (
+  base: CheckerBaseParams,
+  videoUUID: string,
+  videoName: string,
+  blacklistType: 'blacklist' | 'unblacklist'
+) {
+  const notificationType = blacklistType === 'blacklist'
+    ? UserNotificationType.BLACKLIST_ON_MY_VIDEO
+    : UserNotificationType.UNBLACKLIST_ON_MY_VIDEO
+
+  function notificationChecker (notification: UserNotification) {
+    expect(notification).to.not.be.undefined
+    expect(notification.type).to.equal(notificationType)
+
+    const video = blacklistType === 'blacklist' ? notification.videoBlacklist.video : notification.video
+
+    checkVideo(video, videoName, videoUUID)
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+    return text.indexOf(videoUUID) !== -1 && text.indexOf(' ' + blacklistType) !== -1
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, 'presence')
+}
+
+async function checkNewPeerTubeVersion (base: CheckerBaseParams, latestVersion: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_PEERTUBE_VERSION
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.peertube).to.exist
+      expect(notification.peertube.latestVersion).to.equal(latestVersion)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.peertube === undefined || n.peertube.latestVersion !== latestVersion
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+
+    return text.includes(latestVersion)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function checkNewPluginVersion (base: CheckerBaseParams, pluginType: PluginType, pluginName: string, type: CheckerType) {
+  const notificationType = UserNotificationType.NEW_PLUGIN_VERSION
+
+  function notificationChecker (notification: UserNotification, type: CheckerType) {
+    if (type === 'presence') {
+      expect(notification).to.not.be.undefined
+      expect(notification.type).to.equal(notificationType)
+
+      expect(notification.plugin.name).to.equal(pluginName)
+      expect(notification.plugin.type).to.equal(pluginType)
+    } else {
+      expect(notification).to.satisfy((n: UserNotification) => {
+        return n === undefined || n.plugin === undefined || n.plugin.name !== pluginName
+      })
+    }
+  }
+
+  function emailNotificationFinder (email: object) {
+    const text = email['text']
+
+    return text.includes(pluginName)
+  }
+
+  await checkNotification(base, notificationChecker, emailNotificationFinder, type)
+}
+
+async function prepareNotificationsTest (serversCount = 3, overrideConfigArg: any = {}) {
+  const userNotifications: UserNotification[] = []
+  const adminNotifications: UserNotification[] = []
+  const adminNotificationsServer2: UserNotification[] = []
+  const emails: object[] = []
+
+  const port = await MockSmtpServer.Instance.collectEmails(emails)
+
+  const overrideConfig = {
+    smtp: {
+      hostname: 'localhost',
+      port
+    },
+    signup: {
+      limit: 20
+    }
+  }
+  const servers = await flushAndRunMultipleServers(serversCount, Object.assign(overrideConfig, overrideConfigArg))
+
+  await setAccessTokensToServers(servers)
+
+  if (serversCount > 1) {
+    await doubleFollow(servers[0], servers[1])
+  }
+
+  const user = {
+    username: 'user_1',
+    password: 'super password'
+  }
+  await createUser({
+    url: servers[0].url,
+    accessToken: servers[0].accessToken,
+    username: user.username,
+    password: user.password,
+    videoQuota: 10 * 1000 * 1000
+  })
+  const userAccessToken = await userLogin(servers[0], user)
+
+  await servers[0].notificationsCommand.updateMySettings({ token: userAccessToken, settings: getAllNotificationsSettings() })
+  await servers[0].notificationsCommand.updateMySettings({ settings: getAllNotificationsSettings() })
+
+  if (serversCount > 1) {
+    await servers[1].notificationsCommand.updateMySettings({ settings: getAllNotificationsSettings() })
+  }
+
+  {
+    const socket = servers[0].socketIOCommand.getUserNotificationSocket({ token: userAccessToken })
+    socket.on('new-notification', n => userNotifications.push(n))
+  }
+  {
+    const socket = servers[0].socketIOCommand.getUserNotificationSocket()
+    socket.on('new-notification', n => adminNotifications.push(n))
+  }
+
+  if (serversCount > 1) {
+    const socket = servers[1].socketIOCommand.getUserNotificationSocket()
+    socket.on('new-notification', n => adminNotificationsServer2.push(n))
+  }
+
+  const resChannel = await getMyUserInformation(servers[0].url, servers[0].accessToken)
+  const channelId = resChannel.body.videoChannels[0].id
+
+  return {
+    userNotifications,
+    adminNotifications,
+    adminNotificationsServer2,
+    userAccessToken,
+    emails,
+    servers,
+    channelId
+  }
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  getAllNotificationsSettings,
+
+  CheckerBaseParams,
+  CheckerType,
+  checkNotification,
+  checkMyVideoImportIsFinished,
+  checkUserRegistered,
+  checkAutoInstanceFollowing,
+  checkVideoIsPublished,
+  checkNewVideoFromSubscription,
+  checkNewActorFollow,
+  checkNewCommentOnMyVideo,
+  checkNewBlacklistOnMyVideo,
+  checkCommentMention,
+  checkNewVideoAbuseForModerators,
+  checkVideoAutoBlacklistForModerators,
+  checkNewAbuseMessage,
+  checkAbuseStateChange,
+  checkNewInstanceFollower,
+  prepareNotificationsTest,
+  checkNewCommentAbuseForModerators,
+  checkNewAccountAbuseForModerators,
+  checkNewPeerTubeVersion,
+  checkNewPluginVersion
+}