diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 217047794..b2078f153 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -46,6 +46,7 @@ test_front:
 
   script:
     - yarn install
+    - yarn run build | tee /dev/stderr | (! grep -i 'ERROR in')
     - yarn run unit
   cache:
     key: "$CI_PROJECT_ID__front_dependencies"
@@ -70,7 +71,9 @@ build_front:
     - yarn install
     - yarn run i18n-extract
     - yarn run i18n-compile
-    - yarn run build
+    # this is to ensure we don't have any errors in the output,
+    # cf https://code.eliotberriot.com/funkwhale/funkwhale/issues/169
+    - yarn run build | tee /dev/stderr | (! grep -i 'ERROR in')
   cache:
     key: "$CI_PROJECT_ID__front_dependencies"
     paths:
diff --git a/front/src/components/playlists/PlaylistModal.vue b/front/src/components/playlists/PlaylistModal.vue
index 03e36ee88..404948dc0 100644
--- a/front/src/components/playlists/PlaylistModal.vue
+++ b/front/src/components/playlists/PlaylistModal.vue
@@ -48,7 +48,7 @@
                 <div
                   v-if="track"
                   class="ui green icon basic small right floated button"
-                  :title="{{ $t('Add to this playlist') }}"
+                  :title="$t('Add to this playlist')"
                   @click="addToPlaylist(playlist.id)">
                   <i class="plus icon"></i> {{ $t('Add track') }}
                 </div>
diff --git a/front/test/unit/specs/components/common.spec.js b/front/test/unit/specs/components/common.spec.js
new file mode 100644
index 000000000..1af4144ca
--- /dev/null
+++ b/front/test/unit/specs/components/common.spec.js
@@ -0,0 +1,10 @@
+import Username from '@/components/common/Username.vue'
+
+import { render } from '../../utils'
+
+describe('Username', () => {
+  it('displays username', () => {
+    const vm = render(Username, {username: 'Hello'})
+    expect(vm.$el.textContent).to.equal('Hello')
+  })
+})
diff --git a/front/test/unit/specs/store/auth.spec.js b/front/test/unit/specs/store/auth.spec.js
index 6b187f5c6..3d175e9f9 100644
--- a/front/test/unit/specs/store/auth.spec.js
+++ b/front/test/unit/specs/store/auth.spec.js
@@ -134,7 +134,7 @@ describe('store/auth', () => {
         action: store.actions.login,
         payload: {credentials: credentials},
         expectedMutations: [
-          { type: 'token', payload: 'test' },
+          { type: 'token', payload: 'test' }
         ],
         expectedActions: [
           { type: 'fetchProfile' }
@@ -183,7 +183,7 @@ describe('store/auth', () => {
         ],
         expectedActions: [
           { type: 'favorites/fetch', payload: null, options: {root: true} },
-          { type: 'playlists/fetchOwn', payload: null, options: {root: true} },
+          { type: 'playlists/fetchOwn', payload: null, options: {root: true} }
         ]
       }, done)
     })
diff --git a/front/test/unit/specs/store/player.spec.js b/front/test/unit/specs/store/player.spec.js
index b55fb010d..1e6c9b33a 100644
--- a/front/test/unit/specs/store/player.spec.js
+++ b/front/test/unit/specs/store/player.spec.js
@@ -132,7 +132,7 @@ describe('store/player', () => {
       testAction({
         action: store.actions.trackEnded,
         payload: {test: 'track'},
-        params: {rootState: {queue: {currentIndex:0, tracks: [1, 2]}}},
+        params: {rootState: {queue: {currentIndex: 0, tracks: [1, 2]}}},
         expectedActions: [
           { type: 'trackListened', payload: {test: 'track'} },
           { type: 'queue/next', payload: null, options: {root: true} }
@@ -143,7 +143,7 @@ describe('store/player', () => {
       testAction({
         action: store.actions.trackEnded,
         payload: {test: 'track'},
-        params: {rootState: {queue: {currentIndex:1, tracks: [1, 2]}}},
+        params: {rootState: {queue: {currentIndex: 1, tracks: [1, 2]}}},
         expectedActions: [
           { type: 'trackListened', payload: {test: 'track'} },
           { type: 'radios/populateQueue', payload: null, options: {root: true} },
diff --git a/front/test/unit/specs/store/queue.spec.js b/front/test/unit/specs/store/queue.spec.js
index 5304d1d75..0df7608e7 100644
--- a/front/test/unit/specs/store/queue.spec.js
+++ b/front/test/unit/specs/store/queue.spec.js
@@ -326,7 +326,7 @@ describe('store/queue', () => {
         action: store.actions.shuffle,
         params: {state: {currentIndex: 1, tracks: tracks}},
         expectedMutations: [
-          { type: 'player/currentTime', payload: 0, options: {root: true}},
+          { type: 'player/currentTime', payload: 0, options: {root: true} },
           { type: 'tracks', payload: [] }
         ],
         expectedActions: [
diff --git a/front/test/unit/specs/store/radios.spec.js b/front/test/unit/specs/store/radios.spec.js
index 6de6b8dd9..3a8c48f04 100644
--- a/front/test/unit/specs/store/radios.spec.js
+++ b/front/test/unit/specs/store/radios.spec.js
@@ -97,6 +97,5 @@ describe('store/radios', () => {
         expectedActions: []
       }, done)
     })
-
   })
 })
diff --git a/front/test/unit/utils.js b/front/test/unit/utils.js
index 233ee982e..6471fc97f 100644
--- a/front/test/unit/utils.js
+++ b/front/test/unit/utils.js
@@ -1,4 +1,11 @@
 // helper for testing action with expected mutations
+import Vue from 'vue'
+
+export const render = (Component, propsData) => {
+  const Constructor = Vue.extend(Component)
+  return new Constructor({ propsData: propsData }).$mount()
+}
+
 export const testAction = ({action, payload, params, expectedMutations, expectedActions}, done) => {
   let mutationsCount = 0
   let actionsCount = 0