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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
function assertEqualsAsync(expected, run, msg) {
var actual;
var hadValue = false;
var hadError = false;
var promise = run();
if (typeof promise !== "object" || typeof promise.then !== "function") {
throw new MjsUnitAssertionError(
"Expected " + run.toString() +
" to return a Promise, but it returned " + PrettyPrint(promise));
}
promise.then(function(value) { hadValue = true; actual = value; },
function(error) { hadError = true; actual = error; });
assertFalse(hadValue || hadError);
%PerformMicrotaskCheckpoint();
if (hadError) throw actual;
assertTrue(
hadValue, "Expected '" + run.toString() + "' to produce a value");
assertEquals(expected, actual, msg);
};
assertEqualsAsync("[1,2,3]", () => (function() {
return (async () => JSON.stringify([...arguments]))();
})(1, 2, 3));
assertEqualsAsync("[4,5,6]",
() => (function() {
return (async () => {
return JSON.stringify([...await arguments]) })();
})(4, 5, 6));
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