mozilla-central/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/microtasks/checkpoint-importScripts.any.js (file symbol)

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// META: global=dedicatedworker,sharedworker
// The `then` handlers for `Promise.resolve()` are evaluated in the first
// microtasks checkpoint after `Promise.resolve()`.
// ----------------------------------------------------------------
// Check when microtasks checkpoint is performed around importScripts().
// The expectation is: the `then` handlers are evaluated after the script
// calling importScripts() is finished, not immediately after importScripts().
// Although #clean-up-after-running-script is executed as a part of
// #run-a-classic-script for importScripts()ed scripts, but at that time
// microtasks checkpoint is NOT performed because JavaScript execution context
// stack is not empty.
self.log = [];
// Microtasks should be executed before
// #run-a-classic-script/#run-a-module-script is completed, and thus before
// script evaluation scheduled by setTimeout().
async_test(t => {
self.addEventListener('error',
t.unreached_func('error event should not be fired'));
t.step_timeout(() => {
assert_array_equals(log, [
'importScripts()ed script',
'catch',
'promise'
]);
t.done();
},
0);
}, "Promise resolved during importScripts()");
try {
importScripts('resources/resolve-then-throw.js');
} catch (e) {
self.log.push('catch');
}