checkpoint-importScripts.any.js (1330B)
1 // META: global=dedicatedworker,sharedworker 2 3 // The `then` handlers for `Promise.resolve()` are evaluated in the first 4 // microtasks checkpoint after `Promise.resolve()`. 5 6 // ---------------------------------------------------------------- 7 // Check when microtasks checkpoint is performed around importScripts(). 8 9 // The expectation is: the `then` handlers are evaluated after the script 10 // calling importScripts() is finished, not immediately after importScripts(). 11 // Although #clean-up-after-running-script is executed as a part of 12 // #run-a-classic-script for importScripts()ed scripts, but at that time 13 // microtasks checkpoint is NOT performed because JavaScript execution context 14 // stack is not empty. 15 16 self.log = []; 17 18 // Microtasks should be executed before 19 // #run-a-classic-script/#run-a-module-script is completed, and thus before 20 // script evaluation scheduled by setTimeout(). 21 async_test(t => { 22 self.addEventListener('error', 23 t.unreached_func('error event should not be fired')); 24 25 t.step_timeout(() => { 26 assert_array_equals(log, [ 27 'importScripts()ed script', 28 'catch', 29 'promise' 30 ]); 31 t.done(); 32 }, 33 0); 34 }, "Promise resolved during importScripts()"); 35 36 try { 37 importScripts('resources/resolve-then-throw.js'); 38 } catch (e) { 39 self.log.push('catch'); 40 }