pkg/analyzer/test/src/diagnostics/on_repeated_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:test_reflective_loader/test_reflective_loader.dart';

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

main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(OnRepeatedTest);
    defineReflectiveTests(UpdateNodeTextExpectations);
  });
}

@reflectiveTest
class OnRepeatedTest extends PubPackageResolutionTest {
  test_2times() async {
    await resolveTestCodeWithDiagnostics(r'''
class A {}
mixin M on A, A {}
//            ^
// [diag.onRepeated] The type 'A' can be included in the superclass constraints only once.
''');
  }

  test_2times_augmentation() async {
    await resolveTestCodeWithDiagnostics(r'''
class A {}
mixin M on A {}
augment mixin M on A {}
//                 ^
// [diag.onRepeated] The type 'A' can be included in the superclass constraints only once.
''');
  }

  test_2times_augmentation_part() async {
    var a = getFile('$testPackageLibPath/a.dart');
    var b = getFile('$testPackageLibPath/b.dart');

    await resolveFilesWithDiagnostics({
      a: r'''
part 'b.dart';

class A {}
mixin M on A {}
''',
      b: r'''
part of 'a.dart';

augment mixin M on A {}
//                 ^
// [diag.onRepeated] The type 'A' can be included in the superclass constraints only once.
''',
    });
  }

  test_2times_viaTypeAlias() async {
    await resolveTestCodeWithDiagnostics(r'''
class A {}
typedef B = A;
mixin M on A, B {}
//            ^
// [diag.onRepeated] The type 'A' can be included in the superclass constraints only once.
''');
  }
}