await-using-outer-inner-using-bindings.js (1187B)
1 // |reftest| shell-option(--enable-explicit-resource-management) skip-if(!(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('explicit-resource-management'))||!xulRuntime.shell) async -- explicit-resource-management is not enabled unconditionally, requires shell-options 2 // Copyright (C) 2023 Ron Buckton. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 5 /*--- 6 esid: sec-runtime-semantics-fordeclarationbindinginstantiation 7 description: > 8 outer await using binding unchanged by for-loop await using binding 9 flags: [async] 10 includes: [asyncHelpers.js] 11 features: [explicit-resource-management] 12 ---*/ 13 14 asyncTest(async function () { 15 const outer_x = { [Symbol.dispose]() {} }; 16 const outer_y = { [Symbol.dispose]() {} }; 17 const inner_x = { [Symbol.dispose]() {} }; 18 const inner_y = { [Symbol.dispose]() {} }; 19 20 { 21 await using x = outer_x; 22 await using y = outer_y; 23 var i = 0; 24 25 for (await using x = inner_x; i < 1; i++) { 26 await using y = inner_y; 27 28 assert.sameValue(x, inner_x); 29 assert.sameValue(y, inner_y); 30 } 31 assert.sameValue(x, outer_x); 32 assert.sameValue(y, outer_y); 33 } 34 });