v8/test/mjsunit/es6/debug-promises/evaluate-across-microtasks.js
2016-06-03 12:07:41 +00:00

67 lines
1.5 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: --expose-debug-as debug --allow-natives-syntax
var Debug = debug.Debug;
var listenerComplete = false;
var exception = null;
var count = 0;
var log = [];
var done = false;
function LogX(x) {
var stored_count = count;
return function() {
log.push(`[${stored_count}] ${x}`);
};
}
function DebuggerStatement() {
log.push(`[${count}] debugger`);
if (count++ < 3) {
debugger;
}
}
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
var p = Promise.resolve();
var q = p.then(LogX("then 1"));
p.then(LogX("then 2"));
q.then(LogX("then 3"));
q.then(DebuggerStatement);
var r = q.then(() => { throw 1; });
r.catch(LogX("catch"));
listenerComplete = true;
} catch (e) {
exception = e;
print(e, e.stack);
quit(1);
};
};
// Add the debug event listener.
Debug.setListener(listener);
DebuggerStatement();
LogX("start")();
// Make sure that the debug event listener was invoked.
assertTrue(listenerComplete);
%RunMicrotasks();
var expectation =
[ "[0] debugger", "[1] start", "[1] then 1",
"[1] then 2", "[1] then 3", "[1] debugger",
"[2] then 1", "[2] then 2", "[1] catch",
"[2] then 3", "[2] debugger", "[3] then 1",
"[3] then 2", "[2] catch", "[3] then 3",
"[3] debugger", "[3] catch",
];
assertEquals(expectation, log);