blob: 55d78279bf0881dfc44fd7e85f4e9cbddcfcbd22 [file] [log] [blame]
/*
* Copyright (c) 2019, 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 To handle these gracefully, we support a [...?] "null-aware
* spread" operator. In cases where the spread expression evaluates to [null],
* that expands to an empty collection instead of throwing a runtime expression.
*
* That turns the example to:
*
* var command = [
* engineDartPath,
* '--target=flutter',
* ...?extraFrontEndOptions,
* mainPath
* ];
* @description Checks that exception is thrown if spreadable element in the
* [Map] is not null-aware and it's [null].
* @author iarkh@unipro.ru
*/
// SharedOptions=--enable-experiment=constant-update-2018
import "../../Utils/expect.dart";
Map getAMap(
String engineDartPath, Map extraFrontEndOptions, String mainPath) {
return({1: engineDartPath, 2: '--target=flutter', ...extraFrontEndOptions,
3: mainPath});
}
main() {
Map a;
Expect.mapEquals(
{1: "enginePath", 2: "--target=flutter", 0: "--option1", 3: "mainPath"},
getAMap("enginePath", {0: "--option1"}, "mainPath"));
Expect.throws(() => a = getAMap("enginePath", null, "mainPath"));
}