Fix serving web tests manually

Author: simolus3

extras/integration_tests/web_wasm/lib/driver.dart

@@ -27,7 +27,10 @@ class TestAssetServer {
  await buildRunner.close();
  }
 
- static Future<TestAssetServer> start({bool debug = false}) async {
+ static Future<TestAssetServer> start({
+ bool debug = false,
+ int? fixedPort,
+ }) async {
  final packageConfig =
  await loadPackageConfigUri((await Isolate.packageConfig)!);
  final ownPackage = packageConfig['web_wasm']!.root;
@@ -91,7 +94,7 @@ class TestAssetServer {
  }
  },
  'localhost',
- 0,
+ fixedPort ?? 0,
  );
 
  return server;

extras/integration_tests/web_wasm/tool/serve_manually.dart

@@ -1,6 +1,6 @@
 import 'package:web_wasm/driver.dart';
 
 void main() async {
- await TestAssetServer.start();
+ await TestAssetServer.start(fixedPort: 8080);
  print('Serving on http://localhost:8080/');
 }