pkg/linter/test/rules/prefer_inlined_adds_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:test_reflective_loader/test_reflective_loader.dart';

import '../rule_test_support.dart';

void main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(PreferInlinedAddsTest);
  });
}

@reflectiveTest
class PreferInlinedAddsTest extends LintRuleTest {
  @override
  String get lintRule => LintNames.prefer_inlined_adds;

  test_listLiteral_addAll_nonListLiteral() async {
    await assertNoDiagnostics(r'''
var x;
var y = ['a']..addAll(x ?? const []);
''');
  }

  test_listLiteral_cascadeAdd() async {
    await assertDiagnostics(
      r'''
var x = ['a']..add('b');
''',
      [lint(15, 3)],
    );
  }

  test_listLiteral_cascadeAdd_multiple() async {
    await assertDiagnostics(
      r'''
var x = ['a']..add('b')..add('c');
''',
      [lint(15, 3)],
    );
  }

  test_listLiteral_cascadeAddAll_listLiteral() async {
    await assertDiagnostics(
      r'''
var x = ['a']..addAll(['b', 'c']);
''',
      [lint(15, 6)],
    );
  }
}