core dom is_visible: Mock in tests to check only for hidden to avoid unavailable offsetWidth/offsetHeight in Jest.

Author: thet

CHANGES.md

@@ -104,6 +104,7 @@
 
 ### Fixes
 
+-   core dom is_visible: Mock in tests to check only for hidden to avoid unavailable offsetWidth/offsetHeight in Jest.
 -   pat calendar, pat checklist, pat datetime-picker: Dispatch DOM events with bubbling and canceling features enabled, as real DOM events do.
     Fixes a problem where calendar categories did not show their initial state correctly.
 -   pat inject: Make sure that nested pat-inject element have the correct context for target ``self``. Fixes: https://github.com/quaive/ploneintranet.prototype/issues/1164

src/setupTests.js

@@ -37,3 +37,10 @@ window.ResizeObserver = function () {
 // Do not output error messages
 import logging from "./core/logging";
 logging.setLevel(50); // level: FATAL
+
+// patch dom.is_visible to not rely on jest-unavailable offsetWidth/Height but
+// simply on el.hidden.
+import dom from "./core/dom";
+dom.is_visible = (el) => {
+    return !el.hidden;
+};