tests/compiler/dart2js/codegen/builtin_equals_test.dart

// Copyright (c) 2012, 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:expect/expect.dart';
import 'package:async_helper/async_helper.dart';
import '../compiler_helper.dart';

const String TEST = r"""
foo() {
  String s = new Object().toString();
  Object o = new Object().toString();
  return s == 'foo'
    && s == null
    && null == s
    && null == o;
}
""";

main() {
  test({bool useKernel}) async {
    await compile(TEST,
        entry: 'foo',
        enableTypeAssertions: true,
        useKernel: useKernel, check: (String generated) {
      Expect.isTrue(!generated.contains('eqB'));

      RegExp regexp = new RegExp('==');
      Iterator<Match> matches = regexp.allMatches(generated).iterator;
      checkNumberOfMatches(matches, 4);
    });
  }

  asyncTest(() async {
    print('--test from ast---------------------------------------------------');
    await test(useKernel: false);
    print('--test from kernel------------------------------------------------');
    await test(useKernel: true);
  });
}