test: fix a jest test

docs/dashboards.md

@@ -283,7 +283,7 @@ You can write interpretations for charts, pivot tables, maps, line lists, event
 
 You can like an interpretation, reply to an interpretation, and add your own interpretations. You can edit, share or delete your own interpretations and replies, and if you have moderator access, you can delete others’ interpretations.
 
-It is possible to format the description field, and interpretations with **bold**, _italic_ by using the Markdown style markers \* and \_ for **bold** and _italic_ respectively. The text field for writing new interpretations has a toolbar for adding rich text. Keyboard shortcuts are also available: Ctrl/Cmd + B and Ctrl/Cmd + I. A limited set of smilies is supported and can be used by typing one of the following character combinations: :) :-) :( :-( :+1 :-1. URLs are automatically detected and converted into a clickable link.
+It is possible to format interpretation text with **bold**, _italic_ by using the Markdown style markers \* and \_ for **bold** and _italic_ respectively. The text field for writing new interpretations has a toolbar for adding rich text. Keyboard shortcuts are also available: Ctrl/Cmd + B and Ctrl/Cmd + I. A limited set of smilies is supported and can be used by typing one of the following character combinations: :) :-) :( :-( :+1 :-1. URLs are automatically detected and converted into a clickable link.
 
 Interpretations are sorted in descending order by date, with the most recent shown on top. Interpretation replies are sorted in ascending order by date, with the oldest shown on top.
 

src/components/Item/VisualizationItem/__tests__/Item.spec.js

@@ -51,6 +51,7 @@ test('Visualization/Item renders view mode', async () => {
         itemActiveTypes: {},
         editDashboard: {},
         visualizations: {},
+        slideshow: null,
     }
 
     const item = {