blob: db577be5d11b94b9ba52fb5646f398a257a3ba25 [file] [log] [blame]
// Copyright (c) 2014, 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.
// Ensure that unused empty HashMap nodes are dropped from the output.
import 'package:async_helper/async_helper.dart';
import 'package:compiler/compiler_new.dart';
import 'package:compiler/src/commandline_options.dart';
import 'package:expect/expect.dart';
import '../memory_compiler.dart';
const TEST_SOURCE = const {
"main.dart": r"""
void main() {
var x = {};
return;
}
"""
};
const HASHMAP_EMPTY_CONSTRUCTOR = r"LinkedHashMap_LinkedHashMap$_empty";
main() {
runTest({bool useKernel}) async {
var collector = new OutputCollector();
await runCompiler(
memorySourceFiles: TEST_SOURCE,
outputProvider: collector,
options: useKernel ? [] : [Flags.useOldFrontend]);
String generated = collector.getOutput('', OutputType.js);
Expect.isFalse(generated.contains(HASHMAP_EMPTY_CONSTRUCTOR));
}
asyncTest(() async {
print('--test from ast---------------------------------------------------');
await runTest(useKernel: false);
print('--test from kernel------------------------------------------------');
await runTest(useKernel: true);
});
}