pkg/analyzer/test/src/diagnostics/recursive_interface_inheritance_on_test.dart

// Copyright (c) 2024, 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:analyzer/src/error/codes.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

import '../dart/resolution/context_collection_resolution.dart';

main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(RecursiveInterfaceInheritanceOnTest);
  });
}

@reflectiveTest
class RecursiveInterfaceInheritanceOnTest extends PubPackageResolutionTest {
  test_1() async {
    await assertErrorsInCode(r'''
mixin A on A {}
''', [
      error(CompileTimeErrorCode.RECURSIVE_INTERFACE_INHERITANCE_ON, 6, 1),
    ]);
  }

  test_1_inAugmentation() async {
    await assertErrorsInCode(r'''
mixin A {}
augment mixin A on A {}
''', [
      error(CompileTimeErrorCode.RECURSIVE_INTERFACE_INHERITANCE_ON, 6, 1),
    ]);
  }

  test_2() async {
    await assertErrorsInCode(r'''
mixin A on B {}
mixin B on A {}
''', [
      error(CompileTimeErrorCode.RECURSIVE_INTERFACE_INHERITANCE, 6, 1),
      error(CompileTimeErrorCode.RECURSIVE_INTERFACE_INHERITANCE, 22, 1),
    ]);
  }
}