fix(dart_frog): support multiple routeNotFound.read calls (#28)

Author: felangel

packages/dart_frog/lib/src/router.dart

@@ -103,6 +103,9 @@ class _RouteNotFoundResponse extends Response {
   static const _message = 'Route not found';
   static final _messageBytes = utf8.encode(_message);
 
+  @override
+  shelf.Response get _response => super._response.change(body: _messageBytes);
+
   @override
   Stream<List<int>> bytes() => Stream<List<int>>.value(_messageBytes);
 

packages/dart_frog/test/src/serve_test.dart

@@ -13,5 +13,17 @@ void main() {
       expect(response.statusCode, equals(HttpStatus.ok));
       await server.close();
     });
+
+    test('can return multiple 404s', () async {
+      final server = await serve(Router(), 'localhost', 3001);
+      final client = HttpClient();
+      var request = await client.getUrl(Uri.parse('http://localhost:3001'));
+      var response = await request.close();
+      expect(response.statusCode, equals(HttpStatus.notFound));
+      request = await client.getUrl(Uri.parse('http://localhost:3001'));
+      response = await request.close();
+      expect(response.statusCode, equals(HttpStatus.notFound));
+      await server.close();
+    });
   });
 }