Add tests for fix to getOidcCallbackUrl (#2248)

playwright/e2e/launch/launch.spec.ts

@@ -11,16 +11,18 @@ import { platform } from "node:os";
 import { test, expect } from "../../element-desktop-test.js";
 
 declare global {
+    interface ElectronPlatform {
+        getEventIndexingManager():
+            | {
+                  supportsEventIndexing(): Promise<boolean>;
+              }
+            | undefined;
+        createPickleKey(userId: string, deviceId: string): Promise<string | null>;
+    }
+
     interface Window {
         mxPlatformPeg: {
-            get(): {
-                getEventIndexingManager():
-                    | {
-                          supportsEventIndexing(): Promise<boolean>;
-                      }
-                    | undefined;
-                createPickleKey(userId: string, deviceId: string): Promise<string | null>;
-            };
+            get(): ElectronPlatform;
         };
     }
 }

playwright/e2e/launch/oidc.spec.ts

@@ -0,0 +1,36 @@
+/*
+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 { test, expect } from "../../element-desktop-test.js";
+
+declare global {
+    interface ElectronPlatform {
+        getOidcCallbackUrl(): URL;
+    }
+
+    interface Window {
+        mxPlatformPeg: {
+            get(): ElectronPlatform;
+        };
+    }
+}
+
+test.describe("OIDC Native", () => {
+    test.slow();
+
+    test.beforeEach(async ({ page }) => {
+        await page.locator(".mx_Welcome").waitFor();
+    });
+
+    test("should use OIDC callback URL without authority component", async ({ page }) => {
+        await expect(
+            page.evaluate<string>(() => {
+                return window.mxPlatformPeg.get().getOidcCallbackUrl().toString();
+            }),
+        ).resolves.toBe("io.element.desktop:/vector/webapp/");
+    });
+});