From 32f12b3ba53a8e58506f8c7f739569c32c214c65 Mon Sep 17 00:00:00 2001
From: Tom <tmpearce@gmail.com>
Date: Wed, 29 Nov 2023 19:34:41 -0500
Subject: [PATCH] check for valid ASSERT in tilesource-dynamic-url test

---
 test/modules/tilesource-dynamic-url.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/modules/tilesource-dynamic-url.js b/test/modules/tilesource-dynamic-url.js
index f07fedc0..d490ee6e 100644
--- a/test/modules/tilesource-dynamic-url.js
+++ b/test/modules/tilesource-dynamic-url.js
@@ -119,7 +119,8 @@
 
             OpenSeadragon.extend( Tile.prototype, OpenSeadragon.Tile.prototype, {
                 getUrl: function() {
-                    ASSERT.ok(true, 'Tile.getUrl called');
+                    // TODO: it seems sometimes this can be called after ASSERT is destroyed; should this be fixed differently?
+                    ASSERT && ASSERT.ok(true, 'Tile.getUrl called');
                     return OriginalTile.prototype.getUrl.apply(this);
                 }
             });