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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /workers/Worker-messageport.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>Test that pages and workers can send MessagePorts to one another.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(function(t) {
var worker = new Worker("support/Worker-messageport.js");
// Send messages with and without ports to the worker to make sure it gets them.
worker.postMessage("noport");
worker.onmessage = t.step_func_done(evt => {
assert_equals(evt.data, "PASS: evt.ports = [] as expected");
});
}, 'Test sending messages to workers with no port.');
async_test(function(t) {
var worker = new Worker("support/Worker-messageport.js");
var channel = new MessageChannel();
worker.postMessage("port", [channel.port1]);
worker.onmessage = t.step_func(evt => {
assert_equals(evt.data, "PASS: Received message port");
});
// Send a message on the new port to make sure it gets to the worker.
channel.port2.postMessage("ping");
// Wait for the response.
channel.port2.onmessage = t.step_func_done(evt => {
assert_equals(evt.data, "pong");
});
channel.port2.start();
}, 'Test sending message to a worker on a port.');
async_test(function(t) {
var worker = new Worker("support/Worker-messageport.js");
var channel = new MessageChannel();
worker.onmessage = t.step_func(evt => {
assert_equals(evt.data, "port");
assert_equals(String(evt.ports), "[object MessagePort]");
assert_equals(evt.ports.length, 1);
evt.ports[0].postMessage("ping");
evt.ports[0].onmessage = t.step_func_done(evt => {
assert_equals(evt.data, "pong");
});
evt.ports[0].start();
});
worker.postMessage("getport");
}, 'Test getting messages from a worker on a port.');
async_test(function(t) {
var worker = new Worker("support/Worker-messageport.js");
var channel = new MessageChannel();
worker.onmessage = t.step_func(evt => { gotSpam(channel.port1); });
worker.postMessage("spam", [channel.port2]);
function gotSpam(port) {
var spamCount = 0;
port.onmessage = t.step_func(evt => {
assert_equals(evt.data, spamCount);
spamCount++;
if (spamCount == 1000) {
t.done();
}
});
}
}, 'Test sending many messages to workers using ports.');
</script>