From f146262ac98b0237c5256b11f6700f85794b47d5 Mon Sep 17 00:00:00 2001
From: mgermerie <73115044+mgermerie@users.noreply.github.com>
Date: Tue, 9 Jan 2024 13:56:45 +0100
Subject: [PATCH] fix(tests): prevent overwriting `navigator.userAgent`

This property has been made read-only in node 21.1.0
---
 test/unit/bootstrap.js | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/test/unit/bootstrap.js b/test/unit/bootstrap.js
index a6616899dd..961cdf348a 100644
--- a/test/unit/bootstrap.js
+++ b/test/unit/bootstrap.js
@@ -23,9 +23,13 @@ global.fetch = fetch;
 global.fetch.Promise = Promise;
 
 // this could be replaced by jsdom.Navigator in https://github.com/iTowns/itowns/pull/1412
-global.navigator = {
-    userAgent: 'firefox',
-};
+// Checking if global.navigator exists targets node versions <21.1.0. Since node
+// <21.1.0, global.navigator is read-only.
+if (!global.navigator) {
+    global.navigator = {
+        userAgent: 'firefox',
+    };
+}
 
 class DOMElement {
     constructor() {