Nate Biggs
545ee13cd4
Change-Id: I193e19581d29a9c4b343ae0a681d1ff530cfce1d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/281309 Commit-Queue: Nate Biggs <natebiggs@google.com> Reviewed-by: Mayank Patke <fishythefish@google.com>
39 lines
1.1 KiB
Dart
39 lines
1.1 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:expect/expect.dart';
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import 'package:async_helper/async_helper.dart';
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import '../helpers/compiler_helper.dart';
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const String TEST = r"""
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foo() {
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String s = Object().toString();
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Object o = Object().toString();
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return s == 'foo'
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&& s == null
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&& null == s
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&& null == o;
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}
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""";
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main() {
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test() async {
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await compile(TEST, entry: 'foo', enableTypeAssertions: true,
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check: (String generated) {
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Expect.isTrue(!generated.contains('eqB'));
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RegExp regexp = RegExp('==');
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Iterator<Match> matches = regexp.allMatches(generated).iterator;
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// `s == null` and `null == s` now both encoded as `s == null` allowing
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// the second to be optimized away.
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checkNumberOfMatches(matches, 3);
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});
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}
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asyncTest(() async {
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print('--test from kernel------------------------------------------------');
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await test();
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});
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}
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