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

// Copyright (c) 2023, 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(RedeclareOnNonRedeclaringMemberTest);
  });
}

@reflectiveTest
class RedeclareOnNonRedeclaringMemberTest extends PubPackageResolutionTest {
  @override
  List<String> get experiments => [];

  @override
  void setUp() {
    super.setUp();
    writeTestPackageConfig(PackageConfigFileBuilder(), meta: true);
  }

  test_getter() async {
    await assertErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {}

extension type E(C c) implements C {
  @redeclare
  int get i => 0;
}
''', [
      error(WarningCode.REDECLARE_ON_NON_REDECLARING_MEMBER, 106, 1),
    ]);
  }

  test_getter_redeclares() async {
    await assertNoErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {
  int get i => 0;
}

extension type E(C c) implements C {
  @redeclare
  int get i => 0;
}
''');
  }

  test_method() async {
    await assertErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {}

extension type E(C c) implements C {
  @redeclare
  void n() {}
}
''', [
      error(WarningCode.REDECLARE_ON_NON_REDECLARING_MEMBER, 103, 1),
    ]);
  }

  test_method_inClass() async {
    await assertErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {}

class D implements C {
  @redeclare
  void n() {}
}
''', [
      // No REDECLARE_ON_NON_REDECLARING_MEMBER warning.
      error(WarningCode.INVALID_ANNOTATION_TARGET, 72, 9),
    ]);
  }

  test_method_redeclared() async {
    await assertNoErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {
  void m() {}
}

extension type E(C c) implements C {
  @redeclare
  void m() {}
}
''');
  }

  test_method_static() async {
    await assertErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {}

extension type E(C c) implements C {
  @redeclare
  static void n() {}
}
''', [
      // No REDECLARE_ON_NON_REDECLARING_MEMBER warning.
      error(WarningCode.INVALID_ANNOTATION_TARGET, 86, 9),
    ]);
  }

  test_setter() async {
    await assertErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {}

extension type E(C c) implements C {
  @redeclare
  set i(int i) {}
}
''', [
      error(WarningCode.REDECLARE_ON_NON_REDECLARING_MEMBER, 102, 1),
    ]);
  }

  test_setter_redeclares() async {
    await assertNoErrorsInCode(r'''
import 'package:meta/meta.dart';

class C {
  set i(int i) {}
}

extension type E(C c) implements C {
  @redeclare
  set i(int i) {}
}
''');
  }
}