v8/test/mjsunit/es6/debug-promises/events.js
2014-08-06 09:41:52 +00:00

125 lines
4.0 KiB
JavaScript

// Copyright 2014 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 --expose-debug-as debug
Debug = debug.Debug;
var eventsExpected = 16;
var exception = null;
var result = [];
function updatePromise(promise, parentPromise, status, value) {
var i;
for (i = 0; i < result.length; ++i) {
if (result[i].promise === promise) {
result[i].parentPromise = parentPromise || result[i].parentPromise;
result[i].status = status || result[i].status;
result[i].value = value || result[i].value;
break;
}
}
assertTrue(i < result.length);
}
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.PromiseEvent) return;
try {
eventsExpected--;
assertTrue(event_data.promise().isPromise());
if (event_data.status() === 0) {
// New promise.
assertEquals("pending", event_data.promise().status());
result.push({ promise: event_data.promise().value(), status: 0 });
assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
} else if (event_data.status() !== undefined) {
// Resolve/reject promise.
updatePromise(event_data.promise().value(),
undefined,
event_data.status(),
event_data.value().value());
} else {
// Chain promises.
assertTrue(event_data.parentPromise().isPromise());
updatePromise(event_data.promise().value(),
event_data.parentPromise().value());
assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
}
} catch (e) {
print(e + e.stack)
exception = e;
}
}
Debug.setListener(listener);
function resolver(resolve, reject) { resolve(); }
var p1 = new Promise(resolver); // event
var p2 = p1.then().then(); // event
var p3 = new Promise(function(resolve, reject) { // event
reject("rejected");
});
var p4 = p3.then(); // event
var p5 = p1.then(); // event
function assertAsync(b, s) {
if (b) {
print(s, "succeeded");
} else {
%AbortJS(s + " FAILED!");
}
}
function testDone(iteration) {
function checkResult() {
if (eventsExpected === 0) {
assertAsync(result.length === 6, "result.length");
assertAsync(result[0].promise === p1, "result[0].promise");
assertAsync(result[0].parentPromise === undefined,
"result[0].parentPromise");
assertAsync(result[0].status === 1, "result[0].status");
assertAsync(result[0].value === undefined, "result[0].value");
assertAsync(result[1].parentPromise === p1,
"result[1].parentPromise");
assertAsync(result[1].status === 1, "result[1].status");
assertAsync(result[2].promise === p2, "result[2].promise");
assertAsync(result[3].promise === p3, "result[3].promise");
assertAsync(result[3].parentPromise === undefined,
"result[3].parentPromise");
assertAsync(result[3].status === -1, "result[3].status");
assertAsync(result[3].value === "rejected", "result[3].value");
assertAsync(result[4].promise === p4, "result[4].promise");
assertAsync(result[4].parentPromise === p3,
"result[4].parentPromise");
assertAsync(result[4].status === -1, "result[4].status");
assertAsync(result[4].value === "rejected", "result[4].value");
assertAsync(result[5].promise === p5, "result[5].promise");
assertAsync(result[5].parentPromise === p1,
"result[5].parentPromise");
assertAsync(result[5].status === 1, "result[5].status");
assertAsync(exception === null, "exception === null");
Debug.setListener(null);
} else if (iteration > 10) {
%AbortJS("Not all events were received!");
} else {
testDone(iteration + 1);
}
}
var iteration = iteration || 0;
var dummy = {};
Object.observe(dummy, checkResult);
dummy.dummy = dummy;
}
testDone();