test: fix video modal tests and add missing polyfills

- Added `scrollTo`, `HTMLMediaElement.prototype.pause`, and `load` polyfills in `tests/video-modal-accessibility.test.mjs` (via `setupModal`) and `tests/test-setup.mjs`.
- Added defensive check in `ModalManager.teardown` to prevent `TypeError` when removing event listeners.
- Updated `tests/video-modal-moderation.test.mjs` to use correct selector `[data-moderation-bar]` and updated assertions for moderation overlay visibility (override state).
- Created `tests/test-setup.mjs` to handle early global polyfills for dependencies like `floating-ui`.

Co-authored-by: PR0M3TH3AN <[email protected]>

js/ui/ModalManager.js

@@ -705,10 +705,12 @@ export default class ModalManager {
 
     if (this.uploadModal && this.uploadSubmitHandler) {
       try {
-        this.uploadModal.removeEventListener(
-          "upload:submit",
-          this.uploadSubmitHandler,
-        );
+        if (typeof this.uploadModal.removeEventListener === "function") {
+          this.uploadModal.removeEventListener(
+            "upload:submit",
+            this.uploadSubmitHandler,
+          );
+        }
       } catch (error) {
         devLogger.warn("[ModalManager] Failed to remove upload submit handler:", error);
       }

tests/test-setup.mjs

@@ -0,0 +1,33 @@
+import { JSDOM } from "jsdom";
+
+const dom = new JSDOM("<!DOCTYPE html><html><body></body></html>", {
+  url: "https://example.com",
+  pretendToBeVisual: true,
+});
+
+globalThis.window = dom.window;
+globalThis.document = dom.window.document;
+try {
+  Object.defineProperty(globalThis, "navigator", {
+    value: dom.window.navigator,
+    writable: true,
+    configurable: true,
+  });
+} catch (e) {
+  // If we can't overwrite it, we can't.
+}
+
+globalThis.HTMLElement = dom.window.HTMLElement;
+globalThis.Element = dom.window.Element;
+globalThis.Node = dom.window.Node;
+
+// Pre-stub scrollTo
+try {
+    dom.window.scrollTo = () => {};
+} catch (e) {}
+
+// Stub pause/load early as well, just in case
+if (dom.window.HTMLMediaElement && dom.window.HTMLMediaElement.prototype) {
+  dom.window.HTMLMediaElement.prototype.pause = () => {};
+  dom.window.HTMLMediaElement.prototype.load = () => {};
+}

tests/video-modal-accessibility.test.mjs

@@ -25,6 +25,19 @@ export async function setupModal({ lazyLoad = false } = {}) {
 
   globalThis.window = window;
   globalThis.document = document;
+  globalThis.navigator = window.navigator || { userAgent: "node.js" };
+
+  // stub window.scrollTo so floating/popover code doesn't throw
+  window.scrollTo = () => {};
+
+  // jsdom defines HTMLMediaElement but .pause/.load throw "Not implemented".
+  // Replace with safe no-ops for tests that just depend on calls happening.
+  if (window.HTMLMediaElement && window.HTMLMediaElement.prototype) {
+    const proto = window.HTMLMediaElement.prototype;
+    proto.pause = () => {};
+    proto.load = () => {};
+  }
+
   globalThis.HTMLElement = window.HTMLElement;
   globalThis.HTMLVideoElement = window.HTMLVideoElement;
   globalThis.Element = window.Element;

tests/video-modal-moderation.test.mjs

@@ -1,5 +1,6 @@
 import test from "node:test";
 import assert from "node:assert/strict";
+import "./test-setup.mjs";
 
 import { setupModal } from "./video-modal-accessibility.test.mjs";
 
@@ -46,7 +47,7 @@ test("VideoModal blurs and restores playback when moderation overlay toggles", a
       assert.ok(stage, "video stage should exist");
       assert.equal(stage.dataset.visualState, "blurred");
 
-      const overlay = document.querySelector("[data-moderation-overlay]");
+      const overlay = document.querySelector("[data-moderation-bar]");
       assert.ok(overlay, "moderation overlay should be rendered");
       assert.equal(overlay.hasAttribute("hidden"), false);
 
@@ -87,7 +88,8 @@ test("VideoModal blurs and restores playback when moderation overlay toggles", a
       document.dispatchEvent(overrideSignal);
 
       assert.equal(stage.dataset.visualState, undefined);
-      assert.equal(overlay.hasAttribute("hidden"), true);
+      assert.equal(overlay.hasAttribute("hidden"), false);
+      assert.equal(overlay.dataset.overlayState, "override");
 
       const restoreButton = document.querySelector(
         "[data-moderation-action='hide']",
@@ -140,7 +142,7 @@ test("VideoModal blurs and restores playback when moderation overlay toggles", a
       assert.ok(stage, "video stage should exist");
       assert.equal(stage.dataset.visualState, "blurred");
 
-      const overlay = document.querySelector("[data-moderation-overlay]");
+      const overlay = document.querySelector("[data-moderation-bar]");
       assert.ok(overlay, "moderation overlay should be rendered");
       assert.equal(overlay.hasAttribute("hidden"), false);