use toThrowError

packages/kit/src/runtime/server/page/load_data.spec.js

@@ -1,4 +1,4 @@
-import { assert, test } from 'vitest';
+import { assert, expect, test } from 'vitest';
 import { create_universal_fetch } from './load_data.js';
 
 /**
@@ -47,20 +47,13 @@ test('succeeds when acao header present on cors', async () => {
 
 test('errors when no acao header present on cors', async () => {
 	const fetch = create_fetch({});
-	try {
+
+	expect(async () => {
 		const response = await fetch('https://domain-b.com');
 		await response.text();
-		throw new Error('should have thrown cors error');
-	} catch (e) {
-		if (!(e instanceof Error)) {
-			throw new Error(`Expected an Error to be thrown but received ${typeof e}`);
-		}
-		assert.isTrue(
-			e.message.includes(
-				"CORS error: No 'Access-Control-Allow-Origin' header is present on the requested resource"
-			)
-		);
-	}
+	}).rejects.toThrowError(
+		"CORS error: No 'Access-Control-Allow-Origin' header is present on the requested resource"
+	);
 });
 
 test('errors when trying to access non-serialized request headers on the server', async () => {