36dd4780f0
BUG=v8:4483 R=yangguo@chromium.org, littledan@chromium.org Review-Url: https://codereview.chromium.org/2082023002 Cr-Commit-Position: refs/heads/master@{#37149}
94 lines
3.4 KiB
JavaScript
94 lines
3.4 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --expose-debug-as debug --harmony-async-await --allow-natives-syntax
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// Test the mirror object for promises.
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var AsyncFunction = (async function() {}).constructor;
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function MirrorRefCache(json_refs) {
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var tmp = eval('(' + json_refs + ')');
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this.refs_ = [];
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for (var i = 0; i < tmp.length; i++) {
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this.refs_[tmp[i].handle] = tmp[i];
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}
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}
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MirrorRefCache.prototype.lookup = function(handle) {
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return this.refs_[handle];
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}
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function testPromiseMirror(promise, status, value) {
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// Create mirror and JSON representation.
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var mirror = debug.MakeMirror(promise);
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var serializer = debug.MakeMirrorSerializer();
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var json = JSON.stringify(serializer.serializeValue(mirror));
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var refs = new MirrorRefCache(
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JSON.stringify(serializer.serializeReferencedObjects()));
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// Check the mirror hierachy.
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assertTrue(mirror instanceof debug.Mirror);
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assertTrue(mirror instanceof debug.ValueMirror);
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assertTrue(mirror instanceof debug.ObjectMirror);
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assertTrue(mirror instanceof debug.PromiseMirror);
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// Check the mirror properties.
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assertEquals(status, mirror.status());
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assertTrue(mirror.isPromise());
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assertEquals('promise', mirror.type());
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assertFalse(mirror.isPrimitive());
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assertEquals("Object", mirror.className());
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assertEquals("#<Promise>", mirror.toText());
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assertSame(promise, mirror.value());
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assertTrue(mirror.promiseValue() instanceof debug.Mirror);
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assertEquals(value, mirror.promiseValue().value());
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// Parse JSON representation and check.
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var fromJSON = eval('(' + json + ')');
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assertEquals('promise', fromJSON.type);
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assertEquals('Object', fromJSON.className);
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assertEquals('function', refs.lookup(fromJSON.constructorFunction.ref).type);
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assertEquals('Promise', refs.lookup(fromJSON.constructorFunction.ref).name);
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assertEquals(status, fromJSON.status);
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assertEquals(value, refs.lookup(fromJSON.promiseValue.ref).value);
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}
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// Test a number of different promises.
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var resolved = (async function() {})();
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var rejected = (async function() { throw undefined; })();
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var pending = (async function() { await 1; })();
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testPromiseMirror(resolved, "resolved", undefined);
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testPromiseMirror(rejected, "rejected", undefined);
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testPromiseMirror(pending, "pending", undefined);
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var resolvedv = (async function() { return "resolve"; })();
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var rejectedv = (async function() { return Promise.reject("reject"); })();
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var thrownv = (async function() { throw "throw"; })();
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testPromiseMirror(resolvedv, "resolved", 'resolve');
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testPromiseMirror(rejectedv, "rejected", 'reject');
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testPromiseMirror(thrownv, "rejected", 'throw');
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// Test internal properties of different promises.
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var m1 = debug.MakeMirror((async function() { return 1; })());
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var ip = m1.internalProperties();
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assertEquals(2, ip.length);
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assertEquals("[[PromiseStatus]]", ip[0].name());
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assertEquals("[[PromiseValue]]", ip[1].name());
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assertEquals("resolved", ip[0].value().value());
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assertEquals(1, ip[1].value().value());
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var m2 = debug.MakeMirror((async function() { throw 2; })());
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ip = m2.internalProperties();
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assertEquals("rejected", ip[0].value().value());
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assertEquals(2, ip[1].value().value());
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var m3 = debug.MakeMirror((async function() { await 1; })());
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ip = m3.internalProperties();
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assertEquals("pending", ip[0].value().value());
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assertEquals("undefined", typeof(ip[1].value().value()));
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%RunMicrotasks();
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