protoc_plugin/test/extension_unknown_interaction_test.dart

// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:protobuf/protobuf.dart';
import 'package:test/test.dart';

import 'gen/google/protobuf/unittest.pb.dart';

void main() {
  test('setExtension clears unknown field with same tag number', () {
    final m = TestAllExtensions();
    m.unknownFields.addField(
      Unittest.optionalInt32Extension.tagNumber,
      UnknownFieldSetField()..addFixed32(33),
    );
    expect(
      m.unknownFields.hasField(Unittest.optionalInt32Extension.tagNumber),
      isTrue,
    );
    m.setExtension(Unittest.optionalInt32Extension, 42);
    expect(m.getExtension(Unittest.optionalInt32Extension), 42);
    expect(
      m.unknownFields.hasField(Unittest.optionalInt32Extension.tagNumber),
      isFalse,
    );
  });
}