1 files changed, 6 insertions, 0 deletions
diff --git a/addons/mail/static/src/components/attachment/attachment.js b/addons/mail/static/src/components/attachment/attachment.js
index 76922ed7a3c..a17ed341b9a 100644
--- a/addons/mail/static/src/components/attachment/attachment.js
+++ b/addons/mail/static/src/components/attachment/attachment.js
@@ -71,6 +71,12 @@ class Attachment extends Component {
         if (this.attachment.fileType !== 'image') {
             return '';
         }
+        if (this.env.isQUnitTest) {
+            // background-image:url is hardly mockable, and attachments in
+            // QUnit tests do not actually exist in DB, so style should not
+            // be fetched at all.
+            return '';
+        }
         let size;
         if (this.detailsMode === 'card') {
             size = '38x38';