adjust minor test config: global mock of HTML functions and addition of test-id

src/lib/components/ExpandableForm.svelte

@@ -22,6 +22,7 @@
 <div data-testid="expand-container" class="flex flex-col items-center">
   <!-- + / × button -->
   <button
+    data-testid="expand-button"
     class="flex items-center justify-center w-12 h-12 rounded-full bg-blue-600 text-white text-2xl font-bold hover:bg-blue-700 transition"
     on:click={toggle}
     aria-expanded={expanded}

tests/views/VorgangList.view.test.ts

@@ -6,6 +6,14 @@ import { ROUTE_NAMES } from '../../src/routes';
 import { actions } from '../../src/routes/(angemeldet)/list/+page.server';
 import { createVorgang } from '$lib/server/vorgangService';
 
+// mock animation features of the browser
+
+window.HTMLElement.prototype.scrollIntoView = vi.fn();
+window.HTMLElement.prototype.animate = vi.fn(() => ({
+	finished: Promise.resolve(),
+													cancel: vi.fn(),
+}))
+
 describe('Vorgänge Liste Page EmptyList-Komponente View', () => {
 	it('zeigt EmptyList-Komponente an, wenn Liste leer ist', () => {
 		const testData = { ...baseData, vorgangList: [] };
@@ -47,16 +55,8 @@ describe('Teste Links auf Korrektheit', () => {
 });
 
 async function clickPlusButton() {
-	// mock animation features of the browser
-
-	window.HTMLElement.prototype.scrollIntoView = vi.fn();
-	window.HTMLElement.prototype.animate = vi.fn(() => ({
-		finished: Promise.resolve(),
-		cancel: vi.fn(),
-	}))
-
 	// button is visible
-	const button = screen.getByRole('button')
+	const button = screen.getByTestId('expand-button')
 	expect(button).toBeInTheDocument();
 
 	await fireEvent.click(button)