diff --git a/tests/unit/setup.js b/tests/unit/setup.js
index 6192747..35921ca 100644
--- a/tests/unit/setup.js
+++ b/tests/unit/setup.js
@@ -2,6 +2,8 @@ import vueSnapshotSerializer from './serializer.js';
 
 expect.addSnapshotSerializer(vueSnapshotSerializer);
 
+global.document = global.window.document;
+document.body.innerHTML = '<div id="app"></div>';
 const { getComputedStyle } = window;
 
 // Prevents console log message to install Vue DevTools