add favorite/unfavorite feature

.gitignore

@@ -5,3 +5,4 @@ yarn.lock
 templates/.*
 assets/*.css
 /mastodon
+mastodon.log

bin/run-mastodon.js

@@ -60,13 +60,10 @@ async function runMastodon () {
     await exec(cmd, {cwd: mastodonDir})
   }
   const promise = spawn('foreman', ['start'], {cwd: mastodonDir})
+  const log = fs.createWriteStream('mastodon.log', {flags: 'a'})
   childProc = promise.childProcess
-  childProc.stdout.on('data', function (data) {
-    console.log(data.toString('utf8').replace(/\n$/, ''))
-  })
-  childProc.stderr.on('data', function (data) {
-    console.error(data.toString('utf8').replace(/\n$/, ''))
-  })
+  childProc.stdout.pipe(log)
+  childProc.stderr.pipe(log)
 
   await waitForMastodonToStart()
 }

routes/_actions/favorite.js

@@ -3,20 +3,28 @@ import { store } from '../_store/store'
 import { database } from '../_database/database'
 import { toast } from '../_utils/toast'
 
-export async function setFavorited(statusId, favorited) {
+export async function setFavorited (statusId, favorited) {
+  if (!store.get('online')) {
+    toast.say('You cannot favorite or unfavorite while offline.')
+    return
+  }
   let instanceName = store.get('currentInstance')
   let accessToken = store.get('accessToken')
   try {
-    let status = await (favorited
+    let result = await (favorited
         ? favoriteStatus(instanceName, accessToken, statusId)
         : unfavoriteStatus(instanceName, accessToken, statusId))
-    await database.insertStatus(instanceName, status)
+    if (result.error) {
+      throw new Error(result.error)
+    }
+    await database.setStatusFavorited(instanceName, statusId, favorited)
     let statusModifications = store.get('statusModifications')
     let currentStatusModifications = statusModifications[instanceName] =
       (statusModifications[instanceName] || {favorites: {}, reblogs: {}})
     currentStatusModifications.favorites[statusId] = favorited
     store.set({statusModifications: statusModifications})
   } catch (e) {
-    toast.say('Failed to favorite/unfavorite. Please try again.')
+    console.error(e)
+    toast.say('Failed to favorite or unfavorite. ' + (e.message || ''))
   }
 }

routes/_api/blockedAndMuted.js

@@ -1,18 +1,14 @@
 import { getWithTimeout, paramsString } from '../_utils/ajax'
-import { basename } from './utils'
+import { auth, basename } from './utils'
 
 export async function getBlockedAccounts (instanceName, accessToken, limit = 80) {
   let url = `${basename(instanceName)}/api/v1/blocks`
   url += '?' + paramsString({ limit })
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }
 
 export async function getMutedAccounts (instanceName, accessToken, limit = 80) {
   let url = `${basename(instanceName)}/api/v1/mutes`
   url += '?' + paramsString({ limit })
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }

routes/_api/favorite.js

@@ -1,16 +1,12 @@
 import { post } from '../_utils/ajax'
-import { basename } from './utils'
+import { basename, auth } from './utils'
 
-export async function favoriteStatus(instanceName, accessToken, statusId) {
+export async function favoriteStatus (instanceName, accessToken, statusId) {
   let url = `${basename(instanceName)}/api/v1/statuses/${statusId}/favourite`
-  return post(url, null, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return post(url, null, auth(accessToken))
 }
 
-export async function unfavoriteStatus(instanceName, accessToken, statusId) {
+export async function unfavoriteStatus (instanceName, accessToken, statusId) {
   let url = `${basename(instanceName)}/api/v1/statuses/${statusId}/unfavourite`
-  return post(url, null, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return post(url, null, auth(accessToken))
 }

routes/_api/lists.js

@@ -1,9 +1,7 @@
 import { getWithTimeout } from '../_utils/ajax'
-import { basename } from './utils'
+import { auth, basename } from './utils'
 
 export function getLists (instanceName, accessToken) {
   let url = `${basename(instanceName)}/api/v1/lists`
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }

routes/_api/pinnedStatuses.js

@@ -1,5 +1,5 @@
 import { getWithTimeout, paramsString } from '../_utils/ajax'
-import { basename } from './utils'
+import { auth, basename } from './utils'
 
 export async function getPinnedStatuses (instanceName, accessToken, accountId) {
   let url = `${basename(instanceName)}/api/v1/accounts/${accountId}/statuses`
@@ -7,7 +7,5 @@ export async function getPinnedStatuses (instanceName, accessToken, accountId) {
     limit: 40,
     pinned: true
   })
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }

routes/_api/reblogsAndFavs.js

@@ -1,18 +1,14 @@
 import { getWithTimeout, paramsString } from '../_utils/ajax'
-import { basename } from './utils'
+import { auth, basename } from './utils'
 
 export async function getReblogs (instanceName, accessToken, statusId, limit = 80) {
   let url = `${basename(instanceName)}/api/v1/statuses/${statusId}/reblogged_by`
   url += '?' + paramsString({ limit })
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }
 
 export async function getFavorites (instanceName, accessToken, statusId, limit = 80) {
   let url = `${basename(instanceName)}/api/v1/statuses/${statusId}/favourited_by`
   url += '?' + paramsString({ limit })
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }

routes/_api/search.js

@@ -1,12 +1,10 @@
 import { getWithTimeout, paramsString } from '../_utils/ajax'
-import { basename } from './utils'
+import { auth, basename } from './utils'
 
 export function search (instanceName, accessToken, query) {
   let url = `${basename(instanceName)}/api/v1/search?` + paramsString({
     q: query,
     resolve: true
   })
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }

routes/_api/timelines.js

@@ -1,5 +1,5 @@
 import { getWithTimeout, paramsString } from '../_utils/ajax'
-import { basename } from './utils'
+import { auth, basename } from './utils'
 
 function getTimelineUrlPath (timeline) {
   switch (timeline) {
@@ -57,14 +57,12 @@ export function getTimeline (instanceName, accessToken, timeline, maxId, since)
     // special case - this is a list of descendents and ancestors
     let statusUrl = `${basename(instanceName)}/api/v1/statuses/${timeline.split('/').slice(-1)[0]}}`
     return Promise.all([
-      getWithTimeout(url, {'Authorization': `Bearer ${accessToken}`}),
-      getWithTimeout(statusUrl, {'Authorization': `Bearer ${accessToken}`})
+      getWithTimeout(url, auth(accessToken)),
+      getWithTimeout(statusUrl, auth(accessToken))
     ]).then(res => {
       return [].concat(res[0].ancestors).concat([res[1]]).concat(res[0].descendants)
     })
   }
 
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }

routes/_api/user.js

@@ -1,25 +1,19 @@
 import { getWithTimeout, paramsString } from '../_utils/ajax'
-import { basename } from './utils'
+import { auth, basename } from './utils'
 
 export function getVerifyCredentials (instanceName, accessToken) {
   let url = `${basename(instanceName)}/api/v1/accounts/verify_credentials`
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }
 
 export function getAccount (instanceName, accessToken, accountId) {
   let url = `${basename(instanceName)}/api/v1/accounts/${accountId}`
-  return getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  return getWithTimeout(url, auth(accessToken))
 }
 
 export async function getRelationship (instanceName, accessToken, accountId) {
   let url = `${basename(instanceName)}/api/v1/accounts/relationships`
   url += '?' + paramsString({id: accountId})
-  let res = await getWithTimeout(url, {
-    'Authorization': `Bearer ${accessToken}`
-  })
+  let res = await getWithTimeout(url, auth(accessToken))
   return res[0]
 }

routes/_api/utils.js

@@ -13,3 +13,9 @@ export function basename (instanceName) {
   }
   return `https://${instanceName}`
 }
+
+export function auth (accessToken) {
+  return {
+    'Authorization': `Bearer ${accessToken}`
+  }
+}

routes/_components/IconButton.html

@@ -2,8 +2,10 @@
   <button type="button"
           aria-label="{{label}}"
           aria-pressed="{{!!pressed}}"
-          class="icon-button {{pressed ? 'pressed' : ''}} {{big ? 'big-icon' : ''}}"
+          class="{{computedClass}}"
           disabled="{{disabled}}"
+          delegate-click-key="{{delegateKey}}"
+          delegate-keydown-key="{{delegateKey}}"
           on:click
   >
     <svg>
@@ -13,8 +15,10 @@
 {{else}}
   <button type="button"
           aria-label="{{label}}"
-          class="icon-button {{big ? 'big-icon' : ''}}"
+          class="{{computedClass}}"
           disabled="{{disabled}}"
+          delegate-click-key="{{delegateKey}}"
+          delegate-keydown-key="{{delegateKey}}"
           on:click
   >
     <svg>
@@ -44,7 +48,7 @@
     fill: var(--action-button-fill-color-hover);
   }
 
-  button.icon-button:active svg {
+  button.icon-button.not-pressable:active svg {
     fill: var(--action-button-fill-color-active);
   }
 
@@ -60,3 +64,19 @@
     fill: var(--action-button-fill-color-pressed-active);
   }
 </style>
+<script>
+  import identity from 'lodash/identity'
+
+  export default {
+    computed: {
+      computedClass: (pressable, pressed, big) => {
+        return [
+          'icon-button',
+          !pressable && 'not-pressable',
+          pressed && 'pressed',
+          big && 'big-icon',
+        ].filter(identity).join(' ')
+      }
+    }
+  }
+</script>

routes/_components/status/Status.html

@@ -28,7 +28,7 @@
   {{#if isStatusInOwnThread}}
   <StatusDetails status="{{originalStatus}}" />
   {{/if}}
-  <StatusToolbar :status :isStatusInOwnThread />
+  <StatusToolbar status="{{originalStatus}}" :isStatusInOwnThread :timelineType :timelineValue />
 </article>
 
 <style>

routes/_components/status/StatusToolbar.html

@@ -15,6 +15,8 @@
     pressable="true"
     pressed="{{favorited}}"
     href="#fa-star"
+    delegateKey="{{favoriteKey}}"
+    ref:favoriteNode
     />
   <IconButton
     label="Show more actions"
@@ -34,12 +36,33 @@
 <script>
   import IconButton from '../IconButton.html'
   import { store } from '../../_store/store'
+  import { registerDelegate, unregisterDelegate } from '../../_utils/delegate'
+  import { setFavorited } from '../../_actions/favorite'
 
   export default {
+    oncreate() {
+      this.onFavoriteClick = this.onFavoriteClick.bind(this)
+
+      let favoriteKey = this.get('favoriteKey')
+      registerDelegate('click', favoriteKey, this.onFavoriteClick)
+      registerDelegate('keydown', favoriteKey, this.onFavoriteClick)
+    },
+    ondestroy() {
+      let favoriteKey = this.get('favoriteKey')
+      unregisterDelegate('click', favoriteKey, this.onFavoriteClick)
+      unregisterDelegate('keydown', favoriteKey, this.onFavoriteClick)
+    },
     components: {
       IconButton
     },
     store: () => store,
+    methods: {
+      onFavoriteClick() {
+        let statusId = this.get('statusId')
+        let favorited = this.get('favorited')
+        /* no await */ setFavorited(statusId, !favorited)
+      }
+    },
     computed: {
       visibility: (status) => status.visibility,
       boostLabel: (visibility) => {
@@ -70,7 +93,9 @@
           return $currentStatusModifications.favorites[status.id]
         }
         return status.favourited
-      }
+      },
+      statusId: (status) => status.id,
+      favoriteKey: (statusId, timelineType, timelineValue) => `fav-${timelineType}-${timelineValue}-${statusId}`
     }
   }
 </script>

routes/_database/timelines.js

@@ -390,13 +390,29 @@ export async function getNotificationIdsForStatus (instanceName, statusId) {
 }
 
 //
-// insert statuses
+// update statuses
 //
 
-export async function insertStatus(instanceName, status) {
+async function updateStatus (instanceName, statusId, updateFunc) {
   const db = await getDatabase(instanceName)
-  cacheStatus(statusesCache, status)
+  if (hasInCache(statusesCache, instanceName, statusId)) {
+    let status = getInCache(statusesCache, instanceName, statusId)
+    updateFunc(status)
+    cacheStatus(status, instanceName)
+  }
   return dbPromise(db, STATUSES_STORE, 'readwrite', (statusesStore) => {
-    putStatus(statusesStore, status)
+    statusesStore.get(statusId).onsuccess = e => {
+      let status = e.target.result
+      updateFunc(status)
+      putStatus(statusesStore, status)
+    }
+  })
+}
+
+export async function setStatusFavorited (instanceName, statusId, favorited) {
+  return updateStatus(instanceName, statusId, status => {
+    let delta = (favorited ? 1 : 0) - (status.favourited ? 1 : 0)
+    status.favourited = favorited
+    status.favourites_count = (status.favourites_count || 0) + delta
   })
 }

routes/_store/instanceComputations.js

@@ -97,8 +97,8 @@ export function instanceComputations (store) {
   )
 
   store.compute('currentStatusModifications',
-    ['statusModifications', 'instanceName'],
-    (statusModifications, instanceName) => {
-      return statusModifications[instanceName]
+    ['statusModifications', 'currentInstance'],
+    (statusModifications, currentInstance) => {
+      return statusModifications[currentInstance]
     })
 }

routes/_utils/ajax.js

@@ -9,14 +9,21 @@ function fetchWithTimeout (url, options) {
 
 async function _post (url, body, headers, timeout) {
   let fetchFunc = timeout ? fetchWithTimeout : fetch
-  return (await fetchFunc(url, {
-    method: 'POST',
-    headers: Object.assign(headers, {
+  let opts = {
+    method: 'POST'
+  }
+  if (body) {
+    opts.headers = Object.assign(headers, {
       'Accept': 'application/json',
       'Content-Type': 'application/json'
-    }),
-    body: JSON.stringify(body)
-  })).json()
+    })
+    opts.body = JSON.stringify(body)
+  } else {
+    opts.headers = Object.assign(headers, {
+      'Accept': 'application/json'
+    })
+  }
+  return (await fetchFunc(url, opts)).json()
 }
 
 async function _get (url, headers, timeout) {

routes/settings/instances/add.html

@@ -15,7 +15,7 @@
     <form class="add-new-instance" on:submit='onSubmit(event)' aria-labelledby="add-an-instance-h1">
 
       {{#if $logInToInstanceError && $logInToInstanceErrorForText === $instanceNameInSearch}}
-      <div class="form-error" role="alert">
+      <div class="form-error form-error-user-error" role="alert">
         Error: {{$logInToInstanceError}}
       </div>
       {{/if}}

tests/spec/02-login-spec.js

@@ -1,11 +1,9 @@
 import { Selector as $ } from 'testcafe'
-import { addInstanceButton, getUrl, instanceInput, settingsButton } from '../utils'
+import { addInstanceButton, formError, getUrl, instanceInput, settingsButton } from '../utils'
 
 fixture`02-login-spec.js`
   .page`http://localhost:4002`
 
-const formError = $('.form-error')
-
 function manualLogin (t, username, password) {
   return t.click($('a').withText('log in to an instance'))
     .expect(getUrl()).contains('/settings/instances/add')

tests/spec/03-basic-timeline-spec.js

@@ -1,21 +1,20 @@
 import { Selector as $ } from 'testcafe'
-import { getUrl, validateTimeline } from '../utils'
+import { getFirstVisibleStatus, getUrl, validateTimeline } from '../utils'
 import { homeTimeline, notifications, localTimeline, favorites } from '../fixtures'
 import { foobarRole } from '../roles'
 
 fixture`03-basic-timeline-spec.js`
   .page`http://localhost:4002`
 
-const firstArticle = $('.virtual-list-item[aria-hidden=false] .status-article')
-
 test('Shows the home timeline', async t => {
   await t.useRole(foobarRole)
-    .expect(firstArticle.hasAttribute('aria-setsize')).ok()
-    .expect(firstArticle.getAttribute('aria-posinset')).eql('0')
+    .expect(getFirstVisibleStatus().exists).ok()
+    .expect(getFirstVisibleStatus().hasAttribute('aria-setsize')).ok()
+    .expect(getFirstVisibleStatus().getAttribute('aria-posinset')).eql('0')
 
   await validateTimeline(t, homeTimeline)
 
-  await t.expect(firstArticle.getAttribute('aria-setsize')).eql('49')
+  await t.expect(getFirstVisibleStatus().getAttribute('aria-setsize')).eql('49')
 })
 
 test('Shows notifications', async t => {

tests/spec/11-reblog-favorites-count.js

@@ -1,5 +1,5 @@
 import { Selector as $ } from 'testcafe'
-import { getNthStatus, getUrl } from '../utils'
+import { getFavoritesCount, getNthStatus, getReblogsCount, getUrl } from '../utils'
 import { foobarRole } from '../roles'
 
 fixture`11-reblog-favorites-count.js`
@@ -9,7 +9,7 @@ test('shows favorites', async t => {
   await t.useRole(foobarRole)
     .click(getNthStatus(0))
     .expect(getUrl()).contains('/statuses/99549266679020981')
-    .expect($('.status-favs-reblogs').nth(0).getAttribute('aria-label')).eql('Favorited 2 times')
+    .expect(getFavoritesCount()).eql(2)
     .expect($('.icon-button[aria-label="Favorite"]').getAttribute('aria-pressed')).eql('true')
     .click($('.status-favs-reblogs').nth(1))
     .expect(getUrl()).contains('/statuses/99549266679020981/favorites')
@@ -23,7 +23,7 @@ test('shows boosts', async t => {
   await t.useRole(foobarRole)
     .click(getNthStatus(0))
     .expect(getUrl()).contains('/statuses/99549266679020981')
-    .expect($('.status-favs-reblogs').nth(1).getAttribute('aria-label')).eql('Boosted 1 time')
+    .expect(getReblogsCount()).eql(1)
     .expect($('.icon-button[aria-label="Boost"]').getAttribute('aria-pressed')).eql('false')
     .click($('.status-favs-reblogs').nth(0))
     .expect(getUrl()).contains('/statuses/99549266679020981/reblogs')

tests/spec/12-favorite-unfavorite.js

@@ -0,0 +1,75 @@
+import {
+  getFavoritesCount,
+  getNthFavoriteButton, getNthFavorited, getNthStatus, getUrl, homeNavButton, notificationsNavButton,
+  scrollToBottomOfTimeline, scrollToTopOfTimeline
+} from '../utils'
+import { foobarRole } from '../roles'
+
+fixture`12-favorite-unfavorite.js`
+  .page`http://localhost:4002`
+
+test('favorites a status', async t => {
+  await t.useRole(foobarRole)
+    .hover(getNthStatus(4))
+    .expect(getNthFavorited(4)).eql('false')
+    .click(getNthFavoriteButton(4))
+    .expect(getNthFavorited(4)).eql('true')
+
+  // scroll down and back up to force an unrender
+  await scrollToBottomOfTimeline(t)
+  await scrollToTopOfTimeline(t)
+  await t
+    .hover(getNthStatus(4))
+    .expect(getNthFavorited(4)).eql('true')
+    .click(notificationsNavButton)
+    .click(homeNavButton)
+    .expect(getNthFavorited(4)).eql('true')
+    .click(notificationsNavButton)
+    .expect(getUrl()).contains('/notifications')
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .expect(getNthFavorited(4)).eql('true')
+    .click(getNthFavoriteButton(4))
+    .expect(getNthFavorited(4)).eql('false')
+})
+
+test('unfavorites a status', async t => {
+  await t.useRole(foobarRole)
+    .expect(getNthFavorited(1)).eql('true')
+    .click(getNthFavoriteButton(1))
+    .expect(getNthFavorited(1)).eql('false')
+
+  // scroll down and back up to force an unrender
+  await scrollToBottomOfTimeline(t)
+  await scrollToTopOfTimeline(t)
+  await t
+    .expect(getNthFavorited(1)).eql('false')
+    .click(notificationsNavButton)
+    .click(homeNavButton)
+    .expect(getNthFavorited(1)).eql('false')
+    .click(notificationsNavButton)
+    .navigateTo('/')
+    .expect(getNthFavorited(1)).eql('false')
+    .click(getNthFavoriteButton(1))
+    .expect(getNthFavorited(1)).eql('true')
+})
+
+test('Keeps the correct count', async t => {
+  await t.useRole(foobarRole)
+    .hover(getNthStatus(4))
+    .click(getNthFavoriteButton(4))
+    .expect(getNthFavorited(4)).eql('true')
+    .click(getNthStatus(4))
+    .expect(getUrl()).contains('/status')
+    .expect(getNthFavorited(0)).eql('true')
+    .expect(getFavoritesCount()).eql(2)
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .hover(getNthStatus(4))
+    .click(getNthFavoriteButton(4))
+    .expect(getNthFavorited(4)).eql('false')
+    .click(getNthStatus(4))
+    .expect(getUrl()).contains('/status')
+    .expect(getNthFavorited(0)).eql('false')
+    .expect(getFavoritesCount()).eql(1)
+})

tests/utils.js

@@ -1,10 +1,23 @@
 import { ClientFunction as exec, Selector as $ } from 'testcafe'
 
+const SCROLL_INTERVAL = 3
+
 export const settingsButton = $('nav a[aria-label=Settings]')
 export const instanceInput = $('#instanceInput')
 export const addInstanceButton = $('.add-new-instance button')
 export const modalDialogContents = $('.modal-dialog-contents')
 export const closeDialogButton = $('.close-dialog-button')
+export const notificationsNavButton = $('nav a[href="/notifications"]')
+export const homeNavButton = $('nav a[href="/"]')
+export const formError = $('.form-error-user-error')
+
+export const favoritesCountElement = $('.status-favs-reblogs:nth-child(3)').addCustomDOMProperties({
+  innerCount: el => parseInt(el.innerText, 10)
+})
+
+export const reblogsCountElement = $('.status-favs-reblogs:nth-child(2)').addCustomDOMProperties({
+  innerCount: el => parseInt(el.innerText, 10)
+})
 
 export const getUrl = exec(() => window.location.href)
 
@@ -15,11 +28,31 @@ export const getActiveElementClass = exec(() =>
 export const goBack = exec(() => window.history.back())
 
 export function getNthStatus (n) {
-  return $(`[aria-hidden="false"] > article[aria-posinset="${n}"]`)
+  return $(`div[aria-hidden="false"] > article[aria-posinset="${n}"]`)
 }
 
 export function getLastVisibleStatus () {
-  return $(`[aria-hidden="false"] > article[aria-posinset]`).nth(-1)
+  return $(`div[aria-hidden="false"] > article[aria-posinset]`).nth(-1)
+}
+
+export function getFirstVisibleStatus () {
+  return $(`div[aria-hidden="false"] > article[aria-posinset]`).nth(0)
+}
+
+export function getNthFavoriteButton (n) {
+  return getNthStatus(n).find('.status-toolbar button:nth-child(3)')
+}
+
+export function getNthFavorited (n) {
+  return getNthFavoriteButton(n).getAttribute('aria-pressed')
+}
+
+export function getFavoritesCount () {
+  return favoritesCountElement.innerCount
+}
+
+export function getReblogsCount () {
+  return reblogsCountElement.innerCount
 }
 
 export async function validateTimeline (t, timeline) {
@@ -47,23 +80,47 @@ export async function validateTimeline (t, timeline) {
     }
 
     // hovering forces TestCafé to scroll to that element: https://git.io/vABV2
-    if (i % 3 === 2) { // only scroll every nth element
+    if (i % SCROLL_INTERVAL === (SCROLL_INTERVAL - 1)) { // only scroll every nth element
       await t.hover(getNthStatus(i))
         .expect($('.loading-footer').exist).notOk()
     }
   }
 }
 
-export async function scrollToBottomOfTimeline (t) {
-  let lastSize = null
+export async function scrollTimelineUp (t) {
+  let oldFirstItem = await getFirstVisibleStatus().getAttribute('aria-posinset')
+  await t.hover(getFirstVisibleStatus())
+  let newFirstItem
   while (true) {
-    await t.hover(getLastVisibleStatus())
-      .expect($('.loading-footer').exist).notOk()
-    let newSize = await getLastVisibleStatus().getAttribute('aria-setsize')
-    if (newSize === lastSize) {
+    newFirstItem = await getFirstVisibleStatus().getAttribute('aria-posinset')
+    if (newFirstItem === '0' || newFirstItem !== oldFirstItem) {
+      break
+    }
+  }
+}
+
+export async function scrollToTopOfTimeline (t) {
+  let i = await getFirstVisibleStatus().getAttribute('aria-posinset')
+  while (true) {
+    await t.hover(getNthStatus(i))
+      .expect($('.loading-footer').exist).notOk()
+    i -= SCROLL_INTERVAL
+    if (i <= 0) {
+      break
+    }
+  }
+}
+
+export async function scrollToBottomOfTimeline (t) {
+  let i = 0
+  while (true) {
+    await t.hover(getNthStatus(i))
+      .expect($('.loading-footer').exist).notOk()
+    let size = await getNthStatus(i).getAttribute('aria-setsize')
+    i += SCROLL_INTERVAL
+    if (i >= size - 1) {
       break
     }
-    lastSize = newSize
   }
 }