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// 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
// Test debug events when we only listen to uncaught exceptions and
// there is only a default reject handler for the to-be-rejected Promise.
// We expect two Exception debug events:
// - when the first Promise is rejected and only has default reject handlers.
// - when the default reject handler passes the rejection on.
Debug = debug.Debug;
var expected_events = 2;
var log = [];
var resolve, reject;
var p0 = new Promise(function(res, rej) { resolve = res; reject = rej; });
var p1 = p0.then(function() {
log.push("p0.then");
throw new Error("123"); // event
});
var p2 = p1.then(function() {
log.push("p1.then");
});
var q = new Promise(function(res, rej) {
log.push("resolve q");
res();
});
q.then(function() {
log.push("resolve p");
resolve();
})
function listener(event, exec_state, event_data, data) {
try {
if (event == Debug.DebugEvent.Exception) {
expected_events--;
assertTrue(expected_events >= 0);
assertTrue(event_data.uncaught());
assertTrue(event_data.promise() instanceof Promise);
if (expected_events == 1) {
// p1 is rejected, uncaught except for its default reject handler.
assertTrue(
exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
assertSame(p1, event_data.promise());
} else {
// p2 is rejected by p1's default reject handler.
assertEquals(0, exec_state.frameCount());
assertSame(p2, event_data.promise());
}
}
} catch (e) {
%AbortJS(e + "\n" + e.stack);
}
}
Debug.setBreakOnUncaughtException();
Debug.setListener(listener);
log.push("end main");
function testDone(iteration) {
function checkResult() {
try {
assertTrue(iteration < 10);
if (expected_events === 0) {
assertEquals(["resolve q", "end main", "resolve p", "p0.then"], log);
} else {
testDone(iteration + 1);
}
} catch (e) {
%AbortJS(e + "\n" + e.stack);
}
}
%EnqueueMicrotask(checkResult);
}
testDone(0);
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