Language/Expressions/Strings/adjacent_strings_t02.dart

// Copyright (c) 2011, 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.

/// @assertion Adjacent strings are implicitly concatenated to form a single
/// string literal.
/// @description Checks that the value of a concatenated string literal is
/// correct.
/// @Issue https://github.com/dart-lang/language/issues/985
/// @author msyabro

import '../../../Utils/expect.dart';


main() {
  Expect.equals("", ""'');
  Expect.equals('a', 'a''');
  Expect.equals('a', '' 'a');
  Expect.equals('ab', 'a''b');
  Expect.equals("12", "1""2");
  Expect.equals(r'\n\n', r'\n'r'\n');
  Expect.equals("a", ""r"a");
  Expect.equals('ab', r'a'"b");
  Expect.equals('string', 's''t''r''i''n''g');
  Expect.equals("22", '${1 + 1}' "${3 - 1}");
  var s = 'a'
          "b"
          '''c'''
          """d"""
          """
e"""
          '''
f''';
  Expect.equals('abcdef', s);

  // "a""""""b""" should be tokenized as "a" """""b""", aka. "a" '""b'.
  Expect.isTrue(identical('a""b', "a""""""b"""));
  Expect.isTrue(identical('a""b', """a""""""""b"""));
}