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function ok(a, msg) {
postMessage({ type: "check", check: !!a, message: msg });
}
function is(a, b, msg) {
ok(a === b, msg);
}
function info(msg) {
postMessage({ type: "info", message: msg });
}
function finish() {
postMessage({ type: "finish" });
}
function basic() {
var a = new MessageChannel();
ok(a, "MessageChannel created");
var port1 = a.port1;
ok(port1, "MessageChannel.port1 exists");
is(port1, a.port1, "MessageChannel.port1 is port1");
var port2 = a.port2;
ok(port2, "MessageChannel.port1 exists");
is(port2, a.port2, "MessageChannel.port2 is port2");
["postMessage", "start", "close"].forEach(function (e) {
ok(e in port1, "MessagePort1." + e + " exists");
ok(e in port2, "MessagePort2." + e + " exists");
});
runTests();
}
function sendMessages() {
var a = new MessageChannel();
ok(a, "MessageChannel created");
a.port1.postMessage("Hello world!");
a.port1.onmessage = function (e) {
is(e.data, "Hello world!", "The message is back!");
runTests();
};
a.port2.onmessage = function (e) {
a.port2.postMessage(e.data);
};
}
function transferPort() {
var a = new MessageChannel();
ok(a, "MessageChannel created");
a.port1.postMessage("Hello world!");
a.port1.onmessage = function (e) {
is(e.data, "Hello world!", "The message is back!");
runTests();
};
postMessage({ type: "port" }, [a.port2]);
}
function transferPort2() {
onmessage = function (evt) {
is(evt.ports.length, 1, "A port has been received by the worker");
evt.ports[0].onmessage = function (e) {
is(e.data, 42, "Data is 42!");
runTests();
};
};
postMessage({ type: "newport" });
}
var tests = [basic, sendMessages, transferPort, transferPort2];
function runTests() {
if (!tests.length) {
finish();
return;
}
var t = tests.shift();
t();
}
var subworker;
onmessage = function (evt) {
if (evt.data == 0) {
runTests();
return;
}
if (!subworker) {
info("Create a subworkers. ID: " + evt.data);
subworker = new Worker("worker_messageChannel.js");
subworker.onmessage = function (e) {
info("Proxy a message to the parent.");
postMessage(e.data, e.ports);
};
subworker.postMessage(evt.data - 1);
return;
}
info("Dispatch a message to the subworker.");
subworker.postMessage(evt.data, evt.ports);
};