<!DOCTYPE html>
<title>Test Worker.terminate() for a worker that tries to run forever after top-level script evaluation is started.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
// The tests here are to provide execution coverage for the code paths for
// forcible worker termination.
// Expectation here is:
// - Not to crash, not to cause assertion failures
// - No WorkerGlobalScope error events and thus Worker error events are fired
// (#report-the-exception is not called when a script is terminated during
// #run-a-classic-script/#run-a-module-script according to the spec)
// - Nothing after infinte loop, promise resolusion/rejection etc. occurs.
for (const test of [
{
url: 'support/Worker-run-forever.js',
description: 'Worker is terminated during top-level script evaluation'
},
{
url: 'support/Worker-run-forever.js',
options: {type: 'module'},
description: 'Worker is terminated during top-level script evaluation (module)'
},
{
url: 'support/Worker-run-forever-during-importScripts.js',
description: 'Worker is terminated during importScripts() call'
},
{
url: 'support/Worker-run-forever-during-nested-importScripts.js',
description: 'Worker is terminated during nested importScripts() call'
},
{
url: 'support/Worker-run-forever-during-dynamic-import.js',
description: 'Worker is terminated during dynamic import()'
},
{
url: 'support/Worker-run-forever-during-dynamic-import.js',
options: {type: 'module'},
description: 'Worker is terminated during dynamic import() (module)'
},
{
url: 'support/Worker-run-forever-during-top-level-await.js',
options: {type: 'module'},
description: 'Worker is terminated during top-level await'
}
]) {
async_test((t) => {
const worker = new Worker(test.url, test.options);
worker.onerror = t.step_func(e => {
// Calls preventDefault() to prevent this event from being considered
// as an uncaught exception.
e.preventDefault();
assert_unreached('onerror');
});
worker.onmessage = t.step_func((e) => {
if (e.data === 'start') {
worker.terminate();
// To make the worker forcibly terminated, because in Chromium worker is
// forcibly terminated after 2 seconds.
t.step_timeout(function() { t.done(); }, 4000);
}
else {
assert_unreached('Unexpected message received: ' + e.data);
}
});
}, test.description);
}
</script>
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