feat: show call participants in room list (Discord-style)

apps/web/test/unit-tests/utils/MediaEventHelper-test.ts

@@ -0,0 +1,40 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+*/
+
+import { MatrixEvent } from "matrix-js-sdk/src/matrix";
+
+import { MediaEventHelper } from "../../../src/utils/MediaEventHelper.ts";
+import { stubClient } from "../../test-utils";
+
+describe("MediaEventHelper", () => {
+    it("should set the mime type on the blob based on the event metadata", async () => {
+        stubClient();
+
+        const event = new MatrixEvent({
+            type: "m.room.message",
+            content: {
+                msgtype: "m.image",
+                body: "image.png",
+                info: {
+                    mimetype: "image/png",
+                    size: 1234,
+                    w: 100,
+                    h: 100,
+                    thumbnail_info: {
+                        mimetype: "image/png",
+                    },
+                    thumbnail_url: "mxc://matrix.org/thumbnail",
+                },
+                url: "mxc://matrix.org/abcdef",
+            },
+        });
+        const helper = new MediaEventHelper(event);
+
+        const blob = await helper.thumbnailBlob.value;
+        expect(blob?.type).toBe(event.getContent().info.thumbnail_info?.mimetype);
+    });
+});