pkg/analyzer/test/src/diagnostics/text_direction_code_point_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:analyzer/src/diagnostic/diagnostic.dart' as diag;
import 'package:test_reflective_loader/test_reflective_loader.dart';

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

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

@reflectiveTest
class UnsafeTextDirectionCodepointTest extends PubPackageResolutionTest {
  test_comments() async {
    await assertErrorsInCode(
      '''
// \u2066
/// \u2066
void f() { // \u2066
  // \u2066
}
''',
      [
        error(diag.textDirectionCodePointInComment, 3, 1),
        error(diag.textDirectionCodePointInComment, 9, 1),
        error(diag.textDirectionCodePointInComment, 25, 1),
        error(diag.textDirectionCodePointInComment, 32, 1),
      ],
    );
  }

  /// https://github.com/flutter/flutter/pull/93029
  test_file_ok() async {
    // Raw strings preserve the escapes.
    await assertNoErrorsInCode(r'''
var u202a = '\u202AInteractive text\u202C';
''');
  }

  test_message_escape() async {
    await assertErrorsInCode(
      '''
var u202a = '\u202A';
''',
      [
        error(
          diag.textDirectionCodePointInLiteral,
          13,
          1,
          messageContains: ['U+202A'],
        ),
      ],
    );
  }

  test_multiLineString() async {
    await assertErrorsInCode(
      '''
var s = """ \u202a
        Multiline!
""";
''',
      [error(diag.textDirectionCodePointInLiteral, 12, 1)],
    );
  }

  test_simpleStrings() async {
    await assertErrorsInCode(
      '''
var u202a = '\u202A';
var u202b = '\u202B';
var u202c = '\u202C';
var u202d = '\u202D';
var u202e = '\u202E';
var u2066 = '\u2066';
var u2067 = '\u2067';
var u2068 = '\u2068';
var u2069 = '\u2069';
''',
      [
        error(diag.textDirectionCodePointInLiteral, 13, 1),
        error(diag.textDirectionCodePointInLiteral, 30, 1),
        error(diag.textDirectionCodePointInLiteral, 47, 1),
        error(diag.textDirectionCodePointInLiteral, 64, 1),
        error(diag.textDirectionCodePointInLiteral, 81, 1),
        error(diag.textDirectionCodePointInLiteral, 98, 1),
        error(diag.textDirectionCodePointInLiteral, 115, 1),
        error(diag.textDirectionCodePointInLiteral, 132, 1),
        error(diag.textDirectionCodePointInLiteral, 149, 1),
      ],
    );
  }

  test_stringInterpolation() async {
    await assertErrorsInCode(
      '''
var x = 'x';
var u202a = '\u202A\$x';
''',
      [error(diag.textDirectionCodePointInLiteral, 26, 1)],
    );
  }
}