Update get_from_url.test.ts

Author: Mqxx

src/request_url/parameter/get_from_url.test.ts

@@ -1,4 +1,5 @@
-import { assertEquals, assertIsError } from '@std/assert'
+/// <reference lib="deno.ns" />
+import { assertEquals, assertThrows } from '@std/assert'
 import { getFromUrl } from './index.ts';
 import {MissingURLParameterKeyError} from '../error/index.ts';
 
@@ -13,7 +14,7 @@ Deno.test('Test getFromUrl', async (test) => {
   await test.step({
     name: 'Test if function throws if the key does not exist.',
     fn() : void {
-      assertIsError(getFromUrl('key=value1&key=value2', 'keyDoesNotExist'), MissingURLParameterKeyError)
+      assertThrows(() => getFromUrl('key=value1&key=value2', 'keyDoesNotExist'), MissingURLParameterKeyError);
     }
   })
 })