<!DOCTYPEHTML>
<html> <!-- Test that a self updating service worker can't keep running forever when the script changes.
- self_update_worker.sjs is a stateful server-side js script that returns a SW script with a different version every time it's invoked. (version=1..n) - The SW script will trigger an update when it reaches the activating state, which, if not for the update delaying mechanism, would result in an iterative cycle. - We currently delay registration.update() calls originating from SWs not currently controlling any clients. The delay is: 0s, 30s, 900s etc, but for the purpose of this test, the delay is: 0s, infinite etc. - We assert that the SW script never reaches version 3, meaning it will only successfully update once. - We give the worker reasonable time to self update by repeatedly registering and unregistering an empty service worker.
-->
<head>
<title>Test for Bug 1432846</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="error_reporting_helpers.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
</head>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1432846">Mozilla Bug 1432846</a>
<p id="display"></p>
<div id="content"style="display: none">
// clear version counter
await fetch("self_update_worker.sjs?clearcounter");
var worker;
let registration = await navigator.serviceWorker.register( "self_update_worker.sjs",
{ scope: "./test_self_update_worker.html?random=" + Date.now()})
.then(function(reg) {
worker = reg.installing;
// We can't wait for 'activated' here, since it's possible for
// the update process to kill the worker before it activates.
// See: https://github.com/w3c/ServiceWorker/issues/1285
return waitForState(worker, 'activating', reg);
});
// We need to wait a reasonable time to give the self updating worker a chance
// to change to a newer version. Register and activate an empty worker 5 times.
for (i = 0; i < 5; i++) {
await activateDummyWorker();
}
// Test variant to ensure that we properly keep the timer alive by having a
// non-zero but small timer duration. In this case, the delay is simply our
// exponential growth rate of 30, so if we end up getting to version 4, that's
// okay and the test may need to be updated.
add_task(async function test_delay_update() {
let version;
navigator.serviceWorker.onmessage = function(event) {
ok (event.data.version <= 3, "Service worker updated too many times." + event.data.version);
version = event.data.version;
}
// clear version counter
await fetch("self_update_worker.sjs?clearcounter");
var worker;
let registration = await navigator.serviceWorker.register( "self_update_worker.sjs",
{ scope: "./test_self_update_worker.html?random=" + Date.now()})
.then(function(reg) {
worker = reg.installing;
// We can't wait for 'activated' here, since it's possible for
// the update process to kill the worker before it activates.
// See: https://github.com/w3c/ServiceWorker/issues/1285
return waitForState(worker, 'activating', reg);
});
// We need to wait a reasonable time to give the self updating worker a chance
// to change to a newer version. Register and activate an empty worker 5 times.
for (i = 0; i < 5; i++) {
await activateDummyWorker();
}
is(version, 3, "Service worker version should be 3.");
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.
